MFS High Yield Municipal Trust

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

 

 

FORM N-Q

 

QUARTERLY SCHEDULE OF PORTFOLIO HOLDINGS OF

REGISTERED MANAGEMENT INVESTMENT COMPANIES

 

Investment Company Act file number 811-4992

 

 

MFS HIGH YIELD MUNICIPAL TRUST

(Exact name of registrant as specified in charter)

 

500 Boylston Street, Boston, Massachusetts 02116

(Address of principal executive offices) (Zip code)

 

Susan S. Newton

Massachusetts Financial Services Company

500 Boylston Street

Boston, Massachusetts 02116

(Name and address of agents for service)

 

Registrant’s telephone number, including area code: (617) 954-5000

 

Date of fiscal year end: November 30

 

Date of reporting period: February 29, 2008


ITEM 1. SCHEDULE OF INVESTMENTS.


LOGO


MFS High Yield Municipal Trust

PORTFOLIO OF INVESTMENTS (Unaudited) 2/29/08

 

Issuer

   Shares/Par    Value ($)

Municipal Bonds – 164.2%

     

Airport & Port Revenue – 6.0%

     

Branson, MO, Regional Airport Transportation Development District Airport Rev., “B”, 6%, 2037

   $ 460,000    $ 388,180

Dallas Fort Worth, TX, International Airport Rev. Improvement, “B”, FSA, 5%, 2025

     3,000,000      2,779,560

New York, NY, City Industrial Development Authority Rev. (Terminal One Group Assn.), 5.5%, 2021

     500,000      495,425

Port Authority NY & NJ, Cons Thirty Seventh, FSA, 5.125%, 2030 (f)

     4,450,000      4,176,592
         
      $ 7,839,757
         

General Obligations - General Purpose – 3.3%

     

New York, NY, “H”, IBC, “N”, MBIA, 5.125%, 2025

   $ 3,510,000    $ 3,487,852

Puerto Rico Government Development Bank, “B”, 5%, 2015

     400,000      411,340

State of California, 5.25%, 2023

     380,000      379,981
         
      $ 4,279,173
         

General Obligations - Schools – 0.5%

     

Irving, TX, Independent School District, “A”, 0%, 2016

   $ 1,000,000    $ 703,290
         

Healthcare Revenue - Hospitals – 30.1%

     

Allegheny County, PA, Hospital Development Authority Rev. (West Penn Allegheny Health), “A”, 5%, 2028

   $ 435,000    $ 359,997

Allegheny County, PA, Hospital Development Authority Rev. (West Penn Allegheny Health), “A”, 5.375%, 2040

     625,000      513,550

Cass County, MO, Hospital Rev., 5.625%, 2038

     185,000      167,525

Colorado Health Facilities Authority Rev. (National Jewish Medical & Research Center), 5.375%, 2016

     1,500,000      1,503,105

Colorado Health Facilities Authority Rev. (Parkview Medical Center), 5%, 2025

     550,000      496,589

Conway, AR, Hospital Rev. (Conway Regional Medical Center), “A”, 6.4%, 2029

     350,000      352,093

Conway, AR, Hospital Rev. (Conway Regional Medical Center), “B”, 6.4%, 2029

     850,000      855,083

Delaware County, PA, Authority Rev. (Mercy Health Corp.), ETM, 6%, 2016

     1,400,000      1,425,900

Delaware County, PA, Authority Rev. (Mercy Health Corp.), ETM, 6%, 2026

     500,000      507,680

Dickinson County, MI, Healthcare System Hospital Rev., 5.7%, 2018

     770,000      759,667

Forsyth County, GA, Hospital Authority Rev. (Baptist Health Care System), ETM, 6%, 2008

     170,000      173,551

Garden City, MI, Hospital Finance Authority Rev. (Garden City Hospital), 5%, 2038

     500,000      369,770

Genesee County, NY, Industrial Development Agency Civic Facility Rev. (United Memorial Medical Center), 5%, 2027

     90,000      74,575

Glendale, AZ, Industrial Development Authority (John C. Lincoln Health), 5%, 2042

     140,000      115,457

Gwinnett County, GA, Hospital Authority Rev. (Gwinnett Hospital Systems), FSA, 8%, 2042

     1,675,000      1,675,000

Highland County, OH, Joint Township, Hospital District Facilities Rev., 6.75%, 2009 (c)

     670,000      723,432

Idaho Health Facilities Authority Rev. (IHC Hospitals, Inc.), ETM, 6.65%, 2021

     2,750,000      3,224,897

Illinois Finance Authority Rev. (Kewanee Hospital), 5.1%, 2031

     435,000      345,908

Illinois Health Facilities Authority Rev. (Swedish American Hospital), 6.875%, 2010 (c)

     500,000      540,640

Indiana Health & Educational Facilities Authority, Hospital Rev. (Community Foundation of Northwest Indiana), 5.5%, 2037

     1,125,000      971,190

Indiana Health Facilities Financing Authority Rev. (Community Foundation of Northwest Indiana ), “A”, 6%, 2034

     425,000      396,495

Jefferson County, IA, Hospital Authority Rev. (Jefferson County Hospital), “C”, 5.8%, 2032

     780,000      692,734

Knox County, TN, Health, Educational & Housing Facilities Board, Hospital Rev. (Covenant Health), “B-2”, FRN, 6.75%, 2046

     550,000      550,000

Louisiana Public Facilities Authority Hospital Rev. (Lake Charles Memorial Hospital), 6.375%, 2034

     830,000      778,565

Louisiana Public Facilities Authority Rev. (Touro Infirmary Project), “A”, 5.5%, 2019

     250,000      241,552

Lufkin, TX, Health Facilities Development Corp. Rev. (Memorial Health System), 5.5%, 2032

     60,000      54,378

 

1


MFS High Yield Municipal Trust

PORTFOLIO OF INVESTMENTS (Unaudited) 2/29/08 - continued

 

Issuer

   Shares/Par    Value ($)

Municipal Bonds – continued

     

Healthcare Revenue - Hospitals – continued

     

Lufkin, TX, Health Facilities Development Corp. Rev. (Memorial Health System), 5.5%, 2037

   $ 60,000    $ 53,717

Maryland Health & Higher Educational Facilites Authority Rev. (Washington County Hospital), 6%, 2043

     120,000      111,596

Maryland Health & Higher Educational Facilities Authority Rev. ( Washington County Hospital), 5.75%, 2038

     250,000      229,393

Maryland Health & Higher Educational Facilities Authority Rev. (Adventist Healthcare), “A”, 5%, 2016

     365,000      365,522

Maryland Health & Higher Educational Facilities Authority Rev. (Adventist Healthcare), “A”, 5.75%, 2025

     400,000      396,560

Massachusetts Development Finance Agency (Boston Biomedical Research), 5.65%, 2019

     620,000      620,124

Massachusetts Health & Educational Facilities Authority Rev. (Civic Investments, Inc.), “A”, 9%, 2012 (c)

     750,000      902,130

Massachusetts Health & Educational Facilities Authority Rev. (Jordan Hospital), “E”, 6.75%, 2033

     250,000      253,797

Massachusetts Health & Educational Facilities Authority Rev. (Milford-Whitinsville Hospital), “C”, 5.25%, 2018

     500,000      489,420

Massachusetts Health & Educational Facilities Authority Rev. (Milford-Whitinsville Hospital), “D”, 6.35%, 2012 (c)

     250,000      280,075

Miami County, OH, Hospital Facilities Rev. (Upper Valley Medical Center), 5.25%, 2018

     300,000      301,563

Minneapolis & St. Paul Redevelopment Authority Rev. (HealthPartners), 5.625%, 2022

     200,000      200,514

Montgomery, AL, Medical Clinic Board Health Care Facility Rev. (Jackson Hospital & Clinic), 5.25%, 2031

     125,000      109,171

Montgomery, AL, Medical Clinic Board Health Care Facility Rev. (Jackson Hospital & Clinic), 5.25%, 2036

     620,000      531,266

New Hampshire Health & Educational Facilities Authority Rev. (Catholic Medical Center), “A”, 6.125%, 2012 (c)

     175,000      195,073

New Hampshire Health & Educational Facilities Authority Rev. (Catholic Medical Center), “A”, 6.125%, 2032

     25,000      25,134

New Hampshire Health & Educational Facilities Authority Rev. (Littleton Regional Hospital ), “A”, 6%, 2008 (c)

     625,000      640,438

New Hampshire Health & Educational Facilities Authority Rev. (Littleton Regional Hospital ), “B”, 5.9%, 2008 (c)

     675,000      691,949

New Hampshire Health & Educational Facilities Authority Rev. (Memorial Hospital at Conway), 5.25%, 2021

     530,000      490,335

New Hampshire Higher Educational & Health Facilities Authority Rev. (Littleton Regional Hospital), “A”, 5.9%, 2008 (c)

     500,000      512,275

New Jersey Health Care Facilities, Financing Authority Rev. (St. Peter’s University Hospital), 5.75%, 2037

     545,000      505,013

New Mexico State Hospital Equipment Loan Council, Hospital Rev. (Rehoboth McKinley Christian Hospital), “A”, 5%, 2017

     285,000      261,773

New York Dormitory Authority Rev. (NYU Hospital Center), “B”, 5.625%, 2037

     300,000      275,658

New York Dormitory Authority Rev. (NYU Hospitals Center), “B”, 5.25%, 2024

     240,000      225,257

Orange County, FL, Health Facilities Authority Rev. (Orlando Regional Healthcare), 5.75%, 2012 (c)

     150,000      163,859

Philadelphia, PA, Hospitals & Higher Education Facilities Authority Rev. (Temple University Hospital), “A”, 5.5%, 2030

     480,000      435,864

Salida, CO, Hospital District Rev., 5.25%, 2036

     735,000      600,091

Saline County, MO, Industrial Development Authority Rev. (John Fitzgibbon Memorial Hospital, Inc.), 5.625%, 2035

     985,000      865,323

Skagit County, WA, Public Hospital District No. 001, 5.75%, 2032

     90,000      83,192

South Dakota Health & Educational Facilities Authority Rev. (Sioux Valley Hospitals & Health Systems), “A”, 5.25%, 2034

     525,000      475,739

 

2


MFS High Yield Municipal Trust

PORTFOLIO OF INVESTMENTS (Unaudited) 2/29/08 - continued

 

Issuer

   Shares/Par    Value ($)

Municipal Bonds – continued

     

Healthcare Revenue - Hospitals – continued

     

South Lake County, FL, Hospital District Rev. (South Lake Hospital, Inc.), 6.375%, 2034

   $ 250,000    $ 250,970

Southwestern, IL, Development Authority Rev. (Anderson Hospital), 5.375%, 2015

     500,000      502,710

Southwestern, IL, Development Authority Rev. (Anderson Hospital), 5.5%, 2020

     550,000      537,878

Southwestern, IL, Development Authority Rev. (Anderson Hospital), 5.125%, 2026

     500,000      445,940

St. Paul, MN, Housing & Redevelopment Authority Hospital Rev. (Healtheast), “A”, 5.7%, 2015

     2,000,000      2,013,300

St. Paul, MN, Port Authority Lease Rev. (Regions Hospital), “1”, 5%, 2036

     700,000      547,463

Sullivan County, TN, Health Educational & Housing Facilities Board Hospital Rev. (Wellmont Health Systems Project), “C”, 5.25%, 2036

     490,000      437,183

Turlock, CA, Health Facilities Rev. (Emanuel Medical Center), 5.375%, 2034

     1,000,000      877,930

Tyler, TX, Health Facilities Development Corp. (East Texas Medical Center), “A”, 5.25%, 2032

     230,000      196,135

Tyler, TX, Health Facilities Development Corp. (East Texas Medical Center), “A”, 5.375%, 2037

     190,000      162,471

Tyler, TX, Health Facilities Development Corp. (Mother Frances Hospital), 6%, 2012 (c)

     750,000      825,825

West Contra Costa, CA, Healthcare District, AMBAC, 5.5%, 2029

     105,000      92,749

West Orange, FL, Healthcare District, “A”, 5.65%, 2022

     400,000      403,876

West Virginia Hospital Finance Authority Rev. (Charleston Medical Center), 6.75%, 2010 (c)

     605,000      662,644

Wisconsin Health & Educational Facilities Authority Rev. (Aurora Health Care, Inc.), 6.4%, 2033

     350,000      350,270

Wisconsin Health & Educational Facilities Authority Rev. (Fort Healthcare, Inc.), 6.1%, 2034

     750,000      751,065

Wisconsin Health & Educational Facilities Authority Rev. (Wheaton Franciscan Healthcare), 5.75%, 2012 (c)

     450,000      493,182

Wisconsin Health & Educational Facilities Authority Rev. (Wheaton Franciscan Services), 5.25%, 2034

     935,000      768,645
         
      $ 39,481,390
         

Healthcare Revenue - Long Term Care – 34.8%

     

Abilene, TX, Health Facilities Development Corp., Retirement Facilities Rev. (Sears Methodist Retirement), “A”, 5.9%, 2025

   $ 750,000    $ 691,177

Abilene, TX, Health Facilities Development Corp., Retirement Facilities Rev. (Sears Methodist Retirement), “A”, 7%, 2033

     200,000      201,136

Boston, MA, Industrial Development Financing Authority Rev. (Springhouse, Inc.), 5.875%, 2020

     235,000      229,846

Bucks County, PA, Industrial Development Authority Retirement Community Rev. (Ann’s Choice, Inc.), “A”, 6.25%, 2035

     250,000      229,952

Bucks County, PA, Industrial Development Authority Rev. (Lutheran Community Telford Center), 5.75%, 2027

     90,000      79,866

Bucks County, PA, Industrial Development Authority Rev. (Lutheran Community Telford Center), 5.75%, 2037

     120,000      102,553

Bucks County, PA, Industrial Development Authority, Retirement Community Rev. (Ann’s Choice, Inc.), 6.125%, 2025

     500,000      468,325

California Statewide Communities Development Authority Rev. (Eskaton Properties, Inc.), 8.25%, 2010 (c)

     700,000      798,483

Capital Projects Finance Authority, FL (Glenridge on Palmer Ranch), “A”, 8%, 2012 (c)

     500,000      589,865

Carlton, MN, Health & Housing Facilities Rev. (Inter-Faith Social Services, Inc.), 7.5%, 2010 (c)

     250,000      272,565

Chartiers Valley, PA, Industrial & Commercial Development Authority (Friendship Village), “A”, 5.75%, 2020

     1,000,000      997,320

Chartiers Valley, PA, Industrial & Commercial Development Authority Rev. (Asbury Health Center), 6.375%, 2024

     1,000,000      980,250

 

3


MFS High Yield Municipal Trust

PORTFOLIO OF INVESTMENTS (Unaudited) 2/29/08 - continued

 

Issuer

   Shares/Par    Value ($)

Municipal Bonds – continued

     

Healthcare Revenue - Long Term Care – continued

     

Cole County, MO, Industrial Development Authority, Senior Living Facilities Rev. (Lutheran Senior Services), 5.5%, 2035

   $ 750,000    $ 683,475

Colorado Health Facilities Authority Rev. (American Housing Foundation, Inc.), 8.5%, 2031

     530,000      534,076

Colorado Health Facilities Authority Rev. (Christian Living Communities Project), “A”, 5.75%, 2037

     500,000      428,955

Colorado Health Facilities Authority Rev. (Covenant Retirement Communities, Inc.), 5%, 2035

     1,100,000      914,782

Colorado Health Facilities Authority Rev. (Volunteers of America Care Facilities), “A”, ETM, 5.45%, 2008

     55,000      55,487

Columbus, GA, Housing Authority Rev. (Calvary Community, Inc.), 7%, 2019

     450,000      414,553

Connecticut Development Authority Rev. (Elim Park Baptist Home, Inc.), 5.85%, 2033

     430,000      410,190

Fulton County, GA, Residential Care Facilities (Canterbury Court), “A”, 6.125%, 2026

     500,000      472,705

Fulton County, GA, Residential Care Facilities, First Mortgage (Lenbrook Square Foundation, Inc.), “A”, 5%, 2029

     1,500,000      1,179,840

HFDC of Central Texas, Inc., Retirement Facilities Rev. (Legacy at Willow Bend), “A”, 5.75%, 2036

     600,000      495,642

Houston, TX, Health Facilities Development Corp., (Buckingham Senior Living Community), “A”, 7%, 2014 (c)

     500,000      586,070

Howard County, MD, Retirement Facilities Rev. (Vantage House Corp.), “A”, 5.25%, 2033

     200,000      161,094

Huntington, NY, Housing Authority Rev. (Gurwin Senior Jewish Residences), “A”, 5.875%, 2019

     420,000      398,080

Huntington, NY, Housing Authority Rev. (Gurwin Senior Jewish Residences), “A”, 6%, 2029

     650,000      585,331

Illinois Finance Authority Rev. (Washington & Jane Smith Community), “A”, 6.25%, 2035

     1,000,000      897,490

Illinois Health Facilities Authority Rev. (Lutheran Senior Ministries, Inc.), 7.375%, 2011 (c)

     650,000      740,909

Illinois Health Facilities Authority Rev. (Washington & Jane Smith Community), “A”, 7%, 2032

     525,000      526,633

Indiana Health Facilities Financing Authority Rev. (Hoosier Care, Inc.), 7.125%, 2034

     1,020,000      966,195

Iowa Finance Authority, Health Care Facilities Rev. (Care Initiatives), 9.25%, 2011 (c)

     950,000      1,139,078

Iowa Finance Authority, Health Care Facilities Rev. (Care Initiatives), “B”, 5.75%, 2018

     550,000      533,313

Iowa Finance Authority, Health Care Facilities Rev. (Care Initiatives), “B”, 5.75%, 2028

     1,475,000      1,313,015

James City County, VA, Economic Development (Virginia United Methodist Homes, Inc.), “A”, 5.4%, 2027

     320,000      275,565

James City County, VA, Economic Development (Virginia United Methodist Homes, Inc.), “A”, 5.5%, 2037

     520,000      432,817

Jefferson, GA, Development Authority Rev. (Senior Living Facilities), “A”, 5.875%, 2038

     500,000      425,125

Johnson City, TN, Health & Educational Facilities Board (Appalachian Christian Village), “A”, 6.25%, 2032

     250,000      229,440

Juneau, AK, City & Boro Non-recourse Rev. (St. Ann’s Care Project), 6.875%, 2025

     925,000      867,789

Kent County, DE, Assisted Living (Heritage at Dover LLC), 7.625%, 2030

     1,140,000      986,294

Kentucky Economic Development Finance Authority Health Facilities Rev. (AHF/Kentucky-IOWA, Inc.), 6.5%, 2029

     395,000      431,186

Kentwood, MI, Economic Development Ltd. (Holland Home), “A”, 5.375%, 2036

     750,000      638,257

La Verne, CA, COP (Brethren Hillcrest Homes), “B”, 6.625%, 2025

     525,000      535,337

Lancaster, PA, Industrial Development Authority Rev. (Garden Spot Village), “A”, 7.625%, 2010 (c)

     325,000      360,045

Lee County, FL, Industrial Development Authority Health Care Facilities Rev. (Shell Point Village), “A”, 5.5%, 2009 (c)

     400,000      422,096

Manhattan, KS, Health Care Facilities Rev. (Meadowlark Hills Retirement Foundation), “A”, 6.375%, 2009 (c)

     250,000      263,470

 

4


MFS High Yield Municipal Trust

PORTFOLIO OF INVESTMENTS (Unaudited) 2/29/08 - continued

 

Issuer

   Shares/Par    Value ($)

Municipal Bonds – continued

     

Healthcare Revenue - Long Term Care – continued

     

Massachusetts Development Finance Agency Rev. (Adventcare), “A”, 6.75%, 2037

   $ 695,000    $ 617,598

Massachusetts Development Finance Agency Rev. (Alliance Health of Brockton, Inc.), “A”, 7.1%, 2032

     1,090,000      1,008,337

Massachusetts Development Finance Agency Rev. (Linden Ponds, Inc.), “A”, 5.5%, 2027

     185,000      160,351

Massachusetts Development Finance Agency Rev. (Linden Ponds, Inc.), “A”, 5.75%, 2035

     45,000      38,739

Massachusetts Development Finance Agency Rev. (Loomis Communities, Inc.), “A”, 5.625%, 2015

     250,000      250,272

Massachusetts Development Finance Agency Rev. (Loomis Communities, Inc.), “A”, 6.9%, 2032

     125,000      126,093

Massachusetts Industrial Finance Agency Rev. (GF/Massachusetts, Inc.), 8.3%, 2023

     805,000      740,383

Meridian, MI, Economic Development Corp., First Mortgage (Burcham Hills Retirement Center), “A-1”, 5.25%, 2026

     250,000      219,707

Metropolitan Government of Nashville & Davidson County, TN, Health & Educational Facilities Board Rev. (Blakeford at Green Hills), 5.65%, 2024

     575,000      511,900

Montgomery County, PA, Industrial Development Authority Rev. (Whitemarsh Continuing Care), 6.125%, 2028

     150,000      138,572

Montgomery County, PA, Industrial Development Authority Rev. (Whitemarsh Continuing Care), 6.25%, 2035

     600,000      547,782

New Hampshire Higher Education & Health Facilities Authority Rev. (Rivermead at Peterborough Retirement Community), 5.75%, 2028

     1,100,000      982,542

New Jersey Economic Development Authority Rev. (Lions Gate), “A”, 5.75%, 2025

     400,000      361,956

New Jersey Economic Development Authority Rev. (Lions Gate), “A”, 5.875%, 2037

     300,000      260,706

New Jersey Economic Development Authority Rev. (Seabrook Village, Inc.), 5.25%, 2026

     500,000      429,975

New Jersey Economic Development Authority Rev. (Seabrook Village, Inc.), 5.25%, 2036

     500,000      409,155

New Jersey Economic Development Authority Rev. (Seabrook Village, Inc.), “A”, 8.25%, 2010 (c)

     700,000      797,328

New Jersey Economic Development Authority Rev. (Seashore Gardens), 5.375%, 2036

     350,000      283,315

New Jersey Economic Development Authority Rev., First Mortgage (Winchester), “A”, 5.75%, 2024

     500,000      474,305

North Carolina Medical Care Commission, First Mortgage (DePaul Community Facilities, Inc.), 7.625%, 2009 (c)

     980,000      1,064,182

Roseville, MN, Elder Care Facilities (Care Institute, Inc.), 7.75%, 2023

     1,630,000      1,369,510

Sartell, MN, Health Care & Housing Authority Rev. (The Foundation for Health Care), “A”, 6.625%, 2029

     1,025,000      994,763

Savannah, GA, Economic Development Authority, First Mortgage (Marshes of Skidway), “A”, 7.4%, 2034

     350,000      352,006

Shelby County, TN, Health, Educational & Housing Facilities Board Rev. (Germantown Village), “A”, 7.25%, 2034

     300,000      281,211

South Carolina Jobs & Economic Development Authority Rev. (Woodlands at Furman), “A”, 6%, 2027

     280,000      257,844

South Carolina Jobs & Economic Development Authority Rev. (Woodlands at Furman), “A”, 6%, 2042

     260,000      227,750

South Carolina Jobs & Economic Development Authority, Health & Facilities Rev., First Mortgage (Wesley Commons), 5.125%, 2026

     400,000      332,116

South Carolina Jobs & Economic Development Authority, Health Facilities Rev. (Wesley Commons), 5.3%, 2036

     200,000      157,404

St. Johns County, FL, Industrial Development Authority (Glenmoor Project), “A”, 5.25%, 2026

     500,000      425,175

Suffolk, VA, Industrial Development Authority, Retirement Facilities Rev. (Lake Prince Center, Inc.), 5.3%, 2031

     250,000      211,208

 

5


MFS High Yield Municipal Trust

PORTFOLIO OF INVESTMENTS (Unaudited) 2/29/08 - continued

 

Issuer

   Shares/Par    Value ($)

Municipal Bonds – continued

     

Healthcare Revenue - Long Term Care – continued

     

Tarrant County, TX, Cultural Education Facilities Finance Corp. (Edgemere Project), “A”, 6%, 2036

   $ 500,000    $ 451,955

Washington County, MN, Housing & Redevelopment Authority Rev. (Aspen Cottages), 9.25%, 2022

     905,000      861,460

Westminster, MD, Economic Development Rev. (Carroll Lutheran Village), “A”, 6.25%, 2034

     500,000      467,115

Westmoreland County, PA, Industrial Development Authority Rev. (Redstone Retirement Community), “A”, 5.875%, 2032

     600,000      522,846

Westmoreland County, PA, Industrial Development Retirement Authority Rev. (Redstone Retirement Community), “A”, 5.75%, 2026

     1,250,000      1,120,213

Wisconsin Health & Educational Facilities Authority Rev. (AE Nursing), “A”, 8.5%, 2033

     600,000      601,518

Wisconsin Health & Educational Facilities Authority Rev. (Attic Angel Community, Inc.), 5.75%, 2008 (c)

     875,000      912,091

Wisconsin Health & Educational Facilities Authority Rev. (Clement Manor, Inc.), 5.75%, 2024

     1,000,000      932,510

Wisconsin Health & Educational Facilities Authority Rev. (United Lutheran Home), 5.7%, 2028

     750,000      679,500

Wisconsin Health & Educational Facilities Board Rev. (All Saints Assisted Living Project), 5.9%, 2027

     90,000      81,662

Wisconsin Health & Educational Facilities Board Rev. (All Saints Assisted Living Project), 6%, 2037

     185,000      163,893
         
      $ 45,772,620
         

Healthcare Revenue - Other – 0.6%

     

Wisconsin Health & Educational Facilities Authority Rev. (Blood Center Southeastern Project), 5.75%, 2034

   $ 750,000    $ 743,903
         

Industrial Revenue - Airlines – 5.2%

     

Alliance Airport Authority, TX (American Airlines, Inc.), 5.25%, 2029

   $ 1,330,000    $ 963,239

Charlotte, NC, Douglas International Airport Special Facilities Rev. (U.S. Airways, Inc.), 5.6%, 2027

     250,000      214,620

Charlotte, NC, Douglas International Airport Special Facilities Rev. (U.S. Airways, Inc.), 7.75%, 2028

     500,000      509,655

Chicago, IL, O’Hare International Airport Special Facilities Rev. (American Airlines, Inc.), 5.5%, 2030

     1,745,000      1,352,584

Cleveland, OH, Airport Special Rev. (Continental Airlines, Inc.), 5.7%, 2019

     875,000      773,325

Dallas-Fort Worth, TX, International Airport Facilities Improvement Corp. Rev. (American Airlines, Inc.), 9%, 2029 (a)

     750,000      803,595

New Jersey Economic Development Authority, Special Facilities Rev. (Continental Airlines, Inc.), 9%, 2033 (a)

     1,250,000      1,363,700

New York, NY, City Industrial Development Agencies Rev. (American Airlines, Inc.), 7.625%, 2025

     365,000      377,538

New York, NY, City Industrial Development Agency Special Facility Rev. (American Airlines, Inc.), “B”, 8.5%, 2028

     500,000      530,680
         
      $ 6,888,936
         

Industrial Revenue - Chemicals – 0.3%

     

Brazos River, TX, Harbor Navigation District (Dow Chemical Co.), “B-2”, 4.95%, 2033

   $ 400,000    $ 345,284
         

Industrial Revenue - Environmental Services – 0.8%

     

Carbon County, UT, Solid Waste Disposal Rev. (Allied Waste Industries), “A”, 7.5%, 2010

   $ 250,000    $ 251,582

Carbon County, UT, Solid Waste Disposal Rev. (Laidlaw Environmental), “A”, 7.45%, 2017

     500,000      497,245

 

6


MFS High Yield Municipal Trust

PORTFOLIO OF INVESTMENTS (Unaudited) 2/29/08 - continued

 

Issuer

   Shares/Par    Value ($)

Municipal Bonds – continued

     

Industrial Revenue - Environmental Services – continued

     

Gulf Coast Waste Disposal Authority, TX (Waste Management of Texas), “A”, 5.2%, 2028

   $ 360,000    $ 305,298
         
      $ 1,054,125
         

Industrial Revenue - Metals – 0.4%

     

Director of Nevada Department of Business & Industry (Wheeling/Pittsburgh Steel), “A”, 8%, 2014

   $ 170,000    $ 172,305

Greensville County, VA, Industrial Development Authority Rev. (Wheeling/Pittsburgh Steel), “A”, 7%, 2014

     435,000      422,455
         
      $ 594,760
         

Industrial Revenue - Other – 4.5%

     

Annawan, IL, Tax Increment Rev. (Patriot Renewable Fuels LLC), 5.625%, 2018

   $ 350,000    $ 322,021

Cartersville, GA, Development Authority Waste & Water Facilities Rev. (Anheuser- Busch Project), 5.95%, 2032

     1,000,000      1,002,350

Gulf Coast, TX, Industrial Development Authority Rev. (CITGO Petroleum Corp.), 8%, 2028

     375,000      394,406

Houston, TX, Industrial Development Corp. (United Parcel Service, Inc.), 6%, 2023

     475,000      455,530

Indianapolis, IN, Airport Authority Rev., Special Facilities (FedEx Corp.), 5.1%, 2017

     500,000      490,545

Michigan Strategic Fund Rev. (Michigan Sugar Co.), “A”, 6.25%, 2015

     1,000,000      1,005,710

New Jersey Economic Development Authority Rev. (GMT Realty LLC), “B”, 6.875%, 2037

     1,000,000      970,030

Virgin Islands Government Refinery Facilities Rev. (Hovensa Coker Project), 6.5%, 2021

     250,000      253,680

Virgin Islands Public Finance Authority, Refinery Facilities Rev. (Hovensa Coker Project), 5.875%, 2022

     400,000      385,900

Will-Kankakee, IL, Regional Development Authority Rev. (Flanders Corp.), 6.5%, 2017

     655,000      641,959
         
      $ 5,922,131
         

Industrial Revenue - Paper – 3.0%

     

Beauregard Parish, LA (Boise Cascade Corp.), 6.8%, 2027

   $ 1,000,000    $ 1,001,740

Bedford County, VA, Industrial Development Authority Rev. (Nekooska Packaging Corp.), 5.6%, 2025

     400,000      331,180

Camden, AL, Industrial Development Board Exempt Facilities Rev., “B” (Weyerhaeuser Co.), 6.375%, 2024

     400,000      411,440

Courtland AL, Industrial Development Board Solid Waste Disposal Rev. (Champion International Corp.), 6%, 2029

     1,000,000      1,009,720

Escambia County, FL, Environmental Improvement Rev. (International Paper Co.), “A”, 4.75%, 2030

     290,000      221,380

Lowndes County, MS, Solid Waste Disposal & Pollution Control Rev. (Weyerhaeuser Co.), “B”, 6.7%, 2022

     595,000      622,626

Phenix City, AL, Industrial Development Board Environmental Improvement Rev., “A” (MeadWestvaco Coated), 6.35%, 2035

     400,000      403,312
         
      $ 4,001,398
         

Miscellaneous Revenue - Entertainment & Tourism – 2.8%

     

Agua Caliente Band of Cahuilla Indians, CA, 5.6%, 2013 (z)

   $ 775,000    $ 790,221

Cabazon Band Mission Indians, CA, 8.375%, 2015 (z)

     170,000      175,239

Cabazon Band Mission Indians, CA, 8.75%, 2019 (z)

     720,000      743,940

Cow Creek Band Umpqua Tribe of Indians, OR, “C”, 5.625%, 2026 (n)

     650,000      578,233

Mashantucket Western Pequot Tribe, CT, “B”, 0%, 2018 (n)

     1,100,000      588,093

Mohegan Tribe Indians, CT, Gaming Authority Rev., 6.25%, 2031 (n)

     200,000      189,528

New York Liberty Development Corp. Rev. (National Sports Museum), “A”, 6.125%, 2019

     400,000      392,404

Seminole Tribe, FL, Special Obligation, “A”, 5.25%, 2027 (n)

     280,000      246,893
         
      $ 3,704,551
         

 

7


MFS High Yield Municipal Trust

PORTFOLIO OF INVESTMENTS (Unaudited) 2/29/08 - continued

 

Issuer

   Shares/Par    Value ($)

Municipal Bonds – continued

     

Miscellaneous Revenue - Other – 1.8%

     

Capital Trust Agency, FL (Aero Syracuse LLC), 6.75%, 2032

   $ 350,000    $ 352,229

Los Angeles, CA, Regional Airports Improvement Corp. (LAX Fuel Corp.), AMBAC, 5.25%, 2023

     500,000      443,315

Maryland Economic Development Corp. (Chesapeake Bay), “A”, 5%, 2031

     750,000      607,027

Philadelphia, PA, Industrial Development Airport Rev. (Aero Philadelphia LLC), 5.25%, 2009

     95,000      95,038

Summit County, OH, Port Authority Building Rev. (Twinsburg Township), “D”, 5.125%, 2025

     655,000      565,999

V Lakes Utility District Ranking Water Systems Rev., 7%, 2037

     300,000      268,053
         
      $ 2,331,661
         

Multi-Family Housing Revenue – 10.5%

     

Broward County, FL, Housing Finance Authority Rev. (Chaves Lakes Apartments Ltd.), “A”, 7.5%, 2040

   $ 500,000    $ 506,150

Capital Trust Agency, FL, Housing Authority Rev. (Atlantic Housing Foundation), “C”, 5.875%, 2028

     660,000      599,993

Charter Mac Equity Issuer Trust, FHLMC, 6%, 2019 (n)

     1,000,000      1,055,710

Charter Mac Equity Issuer Trust, “B”, FHLMC, 7.6%, 2010 (a)(n)

     500,000      545,490

Clay County, FL, Housing Finance Authority Rev. (Madison Commons Apartments), “A”, 7.45%, 2040

     495,000      497,816

District of Columbia Housing Finance Agency (Henson Ridge), 5.1%, 2037

     655,000      583,710

Durham, NC, Durham Housing Authority Rev. (Magnolia Pointe Apartments), 5.65%, 2038 (a)

     1,000,000      901,620

El Paso County, TX, Housing Finance Corp. (American Housing Foundation), “D”, 10%, 2032

     295,000      295,021

El Paso County, TX, Housing Finance Corp. (American Housing Foundation, Inc.), “C”, 8%, 2032

     290,000      290,055

GMAC Municipal Mortgage Trust, “B-1”, 5.6%, 2039 (a)(n)

     500,000      467,135

Massachusetts Housing Finance Agency Rev., “B”, 5%, 2030

     500,000      456,255

Massachusetts Housing Finance Agency Rev., “E”, 5%, 2028

     500,000      452,715

Mississippi Home Corp., Rev. (Kirkwood Apartments), 6.8%, 2037

     605,000      557,961

MuniMae TE Bond Subsidiary LLC, 5.8%, 2049 (n)

     1,000,000      990,000

New Mexico Mortgage Finance Authority, Multi-Family Housing Rev. (Sun Pointe Apartments), “E”, FHA, 4.8%, 2040

     500,000      422,465

New York, NY, City Housing Development Corp., “F-1”, 4.65%, 2025

     750,000      673,140

North Carolina Medical Care Commission, Health Care Facilities Rev., “A”, (ARC Projects), 5.8%, 2034

     800,000      792,576

Resolution Trust Corp., Pass-Through Certificates, “1993”, 8.5%, 2016 (z)

     455,481      448,795

Seattle, WA, Housing Authority Rev., Capped Fund Program (High Rise Rehab), “I”, FSA, 5%, 2025

     500,000      456,375

White Bear Lake, MN, Multi-Family Housing Rev. (Birch Lake), “A”, 10.25%, 2019

     1,770,000      1,752,300

White Bear Lake, MN, Multi-Family Housing Rev. (Birch Lake), “B”, 0%, 2019

     617,000      302,330

Wilmington, DE, Multi-Family Housing Rev. (Electra Arms Senior Associates), 6.25%, 2028

     870,000      765,739
         
      $ 13,813,351
         

Sales & Excise Tax Revenue – 7.8%

     

Bolingbrook, IL, Sales Tax Rev., 0% to 2008, 6.25% to 2024

   $ 500,000    $ 496,970

Metropolitan Pier & Exposition Authority, State Tax Rev., MBIA, 0%, 2013

     5,000,000      3,881,700

Metropolitan Pier & Exposition Authority, State Tax Rev., FGIC, 0%, 2014

     3,990,000      3,002,714

Metropolitan Pier & Exposition Authority, State Tax Rev., MBIA, 0%, 2015

     3,000,000      2,128,770

Metropolitan Pier & Exposition Authority, State Tax Rev., ETM, FGIC, 0%, 2014

     1,010,000      783,800
         
      $ 10,293,954
         

Single Family Housing - Local – 1.2%

     

Minneapolis & St. Paul Housing Authority Rev. (City Living), “A-2”, GNMA, 5%, 2038

   $ 739,193    $ 648,893

 

8


MFS High Yield Municipal Trust

PORTFOLIO OF INVESTMENTS (Unaudited) 2/29/08 - continued

 

Issuer

   Shares/Par    Value ($)

Municipal Bonds – continued

     

Single Family Housing - Local – continued

     

Pittsburgh, PA, Urban Redevelopment Authority Rev., “C”, GNMA, 4.8%, 2028

   $ 1,000,000    $ 898,390
         
      $ 1,547,283
         

Single Family Housing - State – 0.4%

     

Kentucky Counties Single Family Mortgage Rev., “A”, MBIA, 9%, 2016

   $ 5,000    $ 5,010

North Dakota Housing Finance Agency Rev., “A”, 4.85%, 2021

     500,000      460,410
         
      $ 465,420
         

Solid Waste Revenue – 0.8%

     

Delaware County, PA, Industrial Development Authority, Resource Recovery Facilities Rev. (American Ref-Fuel Co.), “A”, 6.2%, 2019

   $ 1,000,000    $ 997,480
         

State & Agency - Other – 0.4%

     

Commonwealth of Puerto Rico (Mepsi Campus), “A”, 6.25%, 2024

   $ 100,000    $ 95,339

Commonwealth of Puerto Rico (Mepsi Campus), “A”, 6.5%, 2037

     500,000      467,155
         
      $ 562,494
         

State & Local Agencies – 2.6%

     

Dorchester County, SC, School District No. 2, Growth Remedy Opportunity Tax Hike, 5.25%, 2029

   $ 500,000    $ 456,150

Laurens County, SC, School District No. 55, Installment Purchase Rev., 5.25%, 2030

     700,000      603,554

Michigan Building Authority Rev., Facilities Program, “I”, 5%, 2024

     1,000,000      988,830

Newberry, SC, Investing in Children’s Education (Newberry County School District Program), 5%, 2030

     400,000      331,764

Puerto Rico Public Finance Corp., “E”, ETM, 6%, 2026

     80,000      87,919

Puerto Rico Public Finance Corp., Unrefunded, “E”, 6%, 2026

     820,000      901,172
         
      $ 3,369,389
         

Tax - Other – 1.0%

     

Dallas County, TX, Flood Control District, 7.25%, 2032

   $ 750,000    $ 729,187

New Jersey Economic Development Authority Rev. (Cigarette Tax), 5.75%, 2029

     500,000      466,775

New Jersey Economic Development Authority Rev. (Cigarette Tax), 5.5%, 2031

     120,000      107,872
         
      $ 1,303,834
         

Tax Assessment – 15.1%

     

Atlanta, GA, Tax Allocation (Eastside Project), “B”, 5.4%, 2020

   $ 500,000    $ 457,370

Ave Maria, FL, Stewardship Community, “A”, 5.125%, 2038

     150,000      109,726

Celebration Community Development District, FL, “A”, 6.4%, 2034

     720,000      734,940

Channing Park Community Development District, FL, 5.3%, 2038

     400,000      298,372

Chicago, IL, Tax Increment Allocation (Pilsen Redevelopment), “B”, 6.75%, 2022

     310,000      316,265

Colonial Country Club Community Development District, FL, 6.4%, 2033

     480,000      489,960

Double Branch Community Development District, FL, “A”, 6.7%, 2034

     485,000      494,472

Du Page County, IL, Special Service Area No. 31 Special Tax (Monarch Landing Project), 5.625%, 2036

     250,000      206,995

Durbin Crossing Community Development District, FL, Special Assessment Rev., “B- 1”, 4.875%, 2010

     250,000      235,292

Grand Bay at Doral Community Development, FL, “A”, 6%, 2039

     90,000      74,732

Grand Bay at Doral Community Development, FL, “B”, 6%, 2017

     545,000      496,190

Heritage Harbour North Community Development District, FL, Capital Improvement Rev., 6.375%, 2038

     325,000      285,327

Homestead 50 Community Development District, FL, “A”, 6%, 2037

     380,000      315,924

Homestead 50 Community Development District, FL, “B”, 5.9%, 2013

     170,000      159,768

Huntington Beach, CA, Community Facilities District, Special Tax (Grand Coast Resort), “2000-1”, 6.45%, 2031

     500,000      502,740

Islands at Doral Southwest Community Development District, FL, 6.375%, 2013 (c)

     245,000      273,829

Lexington Oaks Community Development District, FL, “A”, 6.125%, 2019

     650,000      650,052

Lincoln, CA, Special Tax (Community Facilities District ), “2003-1”, 5.55%, 2013 (c)

     440,000      486,829

Lincolnshire, IL, Special Service Area No. 1 (Sedgebrook Project), 6.25%, 2034

     250,000      228,697

 

9


MFS High Yield Municipal Trust

PORTFOLIO OF INVESTMENTS (Unaudited) 2/29/08 - continued

 

Issuer

   Shares/Par    Value ($)

Municipal Bonds – continued

     

Tax Assessment – continued

     

Magnolia Park Community Development District, FL, Special Assessment Rev., “A”, 6.15%, 2039

   $ 680,000    $ 579,884

Main Street Community Development District, “B”, 6.9%, 2017

     225,000      221,092

Main Street Community Development District, FL, “A”, 6.8%, 2038

     295,000      286,153

Northwest Metropolitan District No. 3, CO, 6.25%, 2035

     500,000      413,920

Oakdale, CA, Public Financing Authority Tax Allocation Rev. (Central City Redevelopment Project), 5.375%, 2033

     1,125,000      976,759

Oakmont Grove Community Development District, CA, “A”, 5.4%, 2038

     300,000      221,178

Ohio County, WV, Commission Tax Increment Rev. (Fort Henry Centre), “A”, 5.85%, 2034

     125,000      110,820

Orange County, CA, Community Facilities Tax No 99, (Ladera Ranch), “A”, 6.5%, 2009 (c)

     1,000,000      1,075,080

Orange County, CA, Improvement Act 1915, “B”, 5.75%, 2033

     500,000      450,005

Orlando, FL, Special Assessment Rev. (Conroy Road Interchange Project), “A”, 5.5%, 2010

     65,000      63,731

Orlando, FL, Special Assessment Rev. (Conroy Road Interchange Project), “A”, 5.8%, 2026

     300,000      277,176

Plano, IL, Special Service Area No. 4 (Lakewood Springs Project Unit 5-B), 6%, 2035

     1,500,000      1,349,145

Pontiac, MI, Tax Increment Finance Authority Rev., 6.375%, 2012 (c)

     450,000      506,876

Portage, IN, Economic Development Rev. (Ameriplex Project), 5%, 2027

     260,000      234,112

Redwood City, CA, Special Tax Community Facilities, (District 1 Redwood), “B”, 6%, 2033

     300,000      277,215

San Diego, CA, Redevelopment Agency, Tax Allocation, FSA, 0%, 2018

     1,015,000      612,126

Sarasota National Community Development District, FL, Special Assessment Rev., 5.3%, 2039

     800,000      586,680

Seven Oaks, FL, Community Development District II Special Assessment Rev., “B”, 5%, 2009

     590,000      575,704

Stoneybrook, FL, Community Development District, “A”, 6.1%, 2019

     215,000      215,097

Sweetwater Creek Community Development District, FL, Capital Improvement Rev., 5.5%, 2038

     200,000      149,242

Temecula Valley, CA, Unified School District, Community Facilities District No. 02-1, 6.125%, 2033

     355,000      338,315

Tolomato Community Development District, FL, Special Assessment Rev., 6.65%, 2040

     585,000      537,358

Tuscany Reserve Community Development District, FL, Special Assessment Rev., “B”, 5.25%, 2016

     185,000      157,903

Volo Village, IL, Special Service Area No. 3, Special Tax (Symphony Meadows Project), “1”, 6%, 2036

     484,000      415,495

West Villages Improvement District, FL, Special Assessment Rev. (Unit of Development No. 3), 5.5%, 2037

     500,000      388,950

Westchester, FL, Community Development District No. 1 (Community Infrastructure), 6.125%, 2035

     275,000      232,488

Westridge, FL, Community Development District, Capital Improvement Rev., 5.8%, 2037

     1,000,000      810,670

Wyandotte County-Kansas City, KS, Unified Government Transportation Development District (Legends Village West Project), 4.875%, 2028

     585,000      479,443

Yorba Linda, CA, Redevelopment Agency, Tax Allocation Rev., “A”, MBIA, 0%, 2024

     1,325,000      503,911
         
      $ 19,864,008
         

Tobacco – 8.8%

     

Buckeye, OH, Tobacco Settlement Rev., Asset Backed, “A-2”, 5.875%, 2030

   $ 1,610,000    $ 1,510,083

Buckeye, OH, Tobacco Settlement Rev., Asset Backed, “A-2”, 5.875%, 2047

     495,000      449,306

Buckeye, OH, Tobacco Settlement Rev., Asset Backed, “A-2”, 6.5%, 2047

     1,300,000      1,298,206

California County, CA, Tobacco Securitization Agency, Tobacco Settlement Rev. (Los Angeles County), 0%, 2046

     3,500,000      189,735

 

10


MFS High Yield Municipal Trust

PORTFOLIO OF INVESTMENTS (Unaudited) 2/29/08 - continued

 

Issuer

   Shares/Par    Value ($)

Municipal Bonds – continued

     

Tobacco – continued

     

Golden State, CA, Tobacco Securitization Corp., Tobacco Settlement Rev., “A-1”, 6.25%, 2013 (c)

   $ 1,600,000    $ 1,748,320

Golden State, CA, Tobacco Securitization Corp., Tobacco Settlement Rev., “A-1”, 5.75%, 2047

     1,000,000      897,610

Golden State, CA, Tobacco Securitization Corp., Tobacco Settlement Rev., Asset Backed, “A-1”, 5.125%, 2047

     1,135,000      922,335

Inland Empire, CA, Tobacco Securitization Corp., Tobacco Settlement Rev., Asset Backed, “C-1”, 0%, 2036

     1,815,000      241,613

Michigan Tobacco Settlement Finance Authority, Tobacco Settlement Rev., Asset Backed, “A”, 6%, 2048

     1,710,000      1,588,436

Tobacco Securitization Authority of Southern California Rev., Asset Backed (San Diego Country Tobacco Asset Securitization Corp.), 0%, 2046

     6,000,000      389,640

Tobacco Settlement Authority of Washington Rev., Asset Backed, 6.625%, 2032

     500,000      503,150

Tobacco Settlement Financing Corp., NJ, 6.75%, 2013 (c)

     1,000,000      1,151,680

Virginia Tobacco Settlement Financing Corp., “B-1”, 5%, 2047

     830,000      655,808
         
      $ 11,545,922
         

Toll Roads – 4.8%

     

E-470 Public Highway Authority, CO, “B”, 0%, 2010 (c)

   $ 8,750,000    $ 1,223,950

E-470 Public Highway Authority, CO, “B”, MBIA, 0%, 2018

     3,000,000      1,722,570

Northwest Parkway, CO, Public Highway Authority (First Tier), “D”, 7.125%, 2011 (c)

     1,000,000      1,128,450

San Joaquin Hills, CA, Transportation Corridor Agency Toll Road Rev., “A”, MBIA, 0%, 2015

     3,000,000      2,169,540
         
      $ 6,244,510
         

Universities - Colleges – 1.5%

     

Maryland Health & Higher Educational Facilities Authority Rev. (Loyola College), “A”, 5.125%, 2045

   $ 500,000    $ 456,360

Pennsylvania Higher Educational Facilities Authority Rev. (University of Philadelphia), “A”, 5.125%, 2025

     570,000      504,849

Southfield, MI, Economic Development Corp. (Lawrence Technological University), “A”, 5.4%, 2018

     750,000      707,625

West Virginia University Rev. (West Virginia University Project), “A”, AMBAC, 0%, 2025

     750,000      268,875
         
      $ 1,937,709
         

Universities - Dormitories – 0.8%

     

California Statewide Communities Development Authority Rev. (Lancer Educational Student Housing Project), 5.625%, 2033

   $ 735,000    $ 644,815

Minneapolis, MN, Student Housing Rev. (Riverton Community Housing Project), “A”, 5.7%, 2040

     500,000      433,570
         
      $ 1,078,385
         

Universities - Secondary Schools – 1.4%

     

California Statewide Communities Development Authority Rev., COP, (Crossroads Schools for the Arts & Sciences), 6%, 2028

   $ 1,035,000    $ 1,057,894

Colorado Housing Finance Development Rev. (Evergreen Country Day School), 5.875%, 2037

     425,000      377,765

Lee County, FL, Industrial Development Authority Rev. (Lee Charter Foundation), “A”, 5.375%, 2037

     535,000      429,541
         
      $ 1,865,200
         

Utilities - Cogeneration – 2.5%

     

Port Authority NY & NJ, Special Obligation Rev., 6.75%, 2011

   $ 2,000,000    $ 2,016,260

Puerto Rico Industrial, Tourist, Educational, Medical & Environmental Central Facilities (Cogeneration Facilities - AES Puerto Rico Project), 6.625%, 2026

     320,000      332,614

Suffolk County, NY, Industrial Development Agency Rev. (Nissequoque Cogeneration Partners Facilities), 5.5%, 2023

     550,000      492,811

 

11


MFS High Yield Municipal Trust

PORTFOLIO OF INVESTMENTS (Unaudited) 2/29/08 - continued

 

Issuer

   Shares/Par    Value ($)

Municipal Bonds – continued

     

Utilities - Cogeneration – continued

     

Western Generation Agency, OR, Cogeneration Project Rev. (Wauna Cogeneration Project), “B”, 5%, 2016

   $ 500,000    $ 474,510
         
      $ 3,316,195
         

Utilities - Investor Owned – 5.6%

     

Brazos River Authority, TX, Pollution Control Rev. (TXU Electric Co. LLC), “C”, 5.75%, 2036 (a)

   $ 220,000    $ 208,397

Brazos River Authority, TX, Pollution Control Rev. (TXU Electric Co. LLC), “C”, 6.75%, 2038

     555,000      496,836

Brazos River Authority, TX, Pollution Control Rev. (TXU Electric Co. LLC), “D”, 5.4%, 2029 (a)

     45,000      40,727

Bryant, IL, Pollution Control Rev. (Central Illinois Light Co.), 5.9%, 2023

     1,000,000      1,002,570

Campbell County, WY, Pollution Control Rev. (Black Hills Power, Inc. Project), 5.35%, 2024

     1,000,000      939,310

Clark County, NV, Industrial Development Rev. (Nevada Power Co. Project), “A”, 5.9%, 2032

     1,500,000      1,299,480

Mississippi Business Finance Corp., Pollution Control Rev. (Systems Energy Resources Project), 5.875%, 2022

     1,500,000      1,505,070

New Hampshire Business Finance Authority, Pollution Control Rev. (Public Service of New Hampshire), “B”, MBIA, 4.75%, 2021

     250,000      238,228

Pennsylvania Economic Development Financing Authority Rev. (Reliant Energy Seward), “A”, 6.75%, 2036

     400,000      397,932

Red River, TX, Authority Pollution Control, (AEP Texas Central Co.), MBIA, 4.45%, 2020

     445,000      406,312

Sabine River Authority, TX, Pollution Control Rev. (TXU Electric Co. LLC), 5.2%, 2028

     185,000      140,015

Sabine River Authority, TX, Pollution Control Rev. (TXU Electric Co. LLC), 5.75%, 2030 (a)

     155,000      146,825

West Feliciana Parish, LA, Pollution Control Rev. (Entergy Gulf States), 6.6%, 2028

     500,000      491,190
         
      $ 7,312,892
         

Utilities - Municipal Owned – 0.3%

     

North Carolina Eastern Municipal Power Agency System Rev., “F”, 5.5%, 2016

   $ 430,000    $ 444,285
         

Utilities - Other – 0.7%

     

Main Street Natural Gas, Inc., GA, “A”, 5.5%, 2028

   $ 335,000    $ 280,452

Salt Verde Financial Corp., AZ, Senior Gas Rev., 5%, 2037

     845,000      682,329
         
      $ 962,781
         

Water & Sewer Utility Revenue – 3.9%

     

Houston, TX, Water & Sewer Systems Rev., “C”, AMBAC, 0%, 2012

   $ 3,000,000    $ 2,492,400

Massachusetts Water Resources Authority, “D”, MBIA, 5%, 2024

     2,000,000      2,003,940

Surprise, AZ, Municipal Property Corp., 4.9%, 2032

     700,000      572,293
         
      $ 5,068,633
         

Total Municipal Bonds

      $ 215,656,704
         

Floating Rate Demand Notes – 1.2%

     

East Baton Rouge, LA, Pollution Control Rev. (Exxon Mobil Corp.), 3.09%, due 4/01/08

   $ 100,000    $ 100,000

Lincoln County, WY, Pollution Control Rev. (Exxon Mobil Corp.), “A”, 3.19%, due 4/01/08

     500,000      500,000

Lincoln County, WY, Pollution Control Rev. (Exxon Mobil Corp.), “B”, 3.19%, due 4/01/08

     200,000      200,000

Lincoln County, WY, Pollution Control Rev. (Exxon Mobil Corp.), “C”, 3.19%, due 4/01/08

     495,000      495,000

Mt. Vernon Industrial Pollution Control Rev. (General Electric Co.), 3.19%, due 4/01/08

     300,000      300,000
         

Total Floating Rate Demand Notes

      $ 1,595,000
         

Total Investments

      $ 217,251,704
         

 

12


MFS High Yield Municipal Trust

PORTFOLIO OF INVESTMENTS (Unaudited) 2/29/08 - continued

 

Other Assets, Less Liabilities – 3.1%

     4,114,008  

Preferred shares (Issued by the trust) (68.5)%

     (90,000,000 )
        

Net assets applicable to common shares – 100.0%

   $ 131,365,712  
        

 

(a) Mandatory tender date is earlier than stated maturity date.

 

(c) Refunded bond.

 

(f) All or a portion of the security has been segregated as collateral for an open futures contract.

 

(n) Securities exempt from registration under Rule 144A of the Securities Act of 1933. These securities may be sold in the ordinary course of business in transactions exempt from registration, normally to qualified institutional buyers. At period end, the aggregate value of these securities was $4,661,082 representing 3.5% of net assets.

 

(z) Restricted securities are not registered under the Securities Act of 1933 and are subject to legal restrictions on resale. These securities generally may be resold in transactions exempt from registration or to the public if the securities are subsequently registered. Disposal of these securities may involve time-consuming negotiations and prompt sale at an acceptable price may be difficult. The fund holds the following restricted securities:

 

Restricted Securities

   Acquisition
Date
   Acquisition
Cost
   Current
Market Value
        

Agua Caliente Band of Cahuilla Indians, CA, 5.6%, 2013

   7/22/03    $ 776,212    $ 790,221

Cabazon Band Mission Indians, CA, 8.375%, 2015

   10/04/04      170,000      175,239

Cabazon Band Mission Indians, CA, 8.75%, 2019

   10/04/04      720,000      743,940

Resolution Trust Corp., Pass-Through Certificates, “1993”, 8.5%, 2016

   10/17/01 -1/14/02      455,481      448,795
            

Total Restricted Securities

         $ 2,158,195

% of Net Assets

           1.6%

The following abbreviations are used in this report and are defined:

 

COP    Certificate of Participation
ETM    Escrowed to Maturity
FHLMC    Federal Home Loan Mortgage Corp.
FRN    Floating Rate Note. Interest rate resets periodically and may not be the rate reported at period end.

Insurers

    
AMBAC    AMBAC Indemnity Corp.
FGIC    Financial Guaranty Insurance Co.
FHA    Federal Housing Administration
FSA    Financial Security Assurance Inc.
GNMA    Government National Mortgage Assn.
MBIA    MBIA Insurance Corp.

See attached supplemental information. For more information see notes to financial statements as disclosed in the most recent semiannual or annual report.

 

13


MFS High Yield Municipal Trust

Supplemental Information (Unaudited) 2/29/08

(1) Fair Value Disclosure

The fund adopted FASB Statement No. 157, Fair Value Measurements (the “Statement”) in this reporting period. This Statement provides a single definition of fair value, a hierarchy for measuring fair value and expanded disclosures about fair value measurements.

Various inputs are used in determining the value of the fund’s investments. These inputs are categorized into three broad levels. Level 1 include quoted prices in active markets for identical assets or liabilities. Level 2 include other significant observable market-based inputs (including quoted prices for similar securities, interest rates, prepayment speed, credit risk, etc.). Level 3 include unobservable inputs, which may include the adviser’s own assumptions in determining the fair value of investments. Other financial instruments are derivative instruments not reflected in Total Investments, such as futures, forwards, swap contracts and written options, which are valued at the unrealized appreciation/depreciation on the instrument. The following is a summary of the levels used as of February 29, 2008 in valuing the fund’s assets carried at market value:

 

     Level 1     Level 2    Level 3    Total  

Investments in Securities

   $ —       $ 217,251,704    $ —      $ 217,251,704  

Other Financial Instruments

     (2,431,025 )     —        —        (2,431,025 )

(2) Portfolio Securities

The cost and unrealized appreciation and depreciation in the value of the investments owned by the fund, as computed on a federal income tax basis, are as follows:

 

Aggregate Cost

   $  227,180,028  
        

Gross unrealized appreciation

   $ 6,121,470  

Gross unrealized depreciation

     (16,049,794 )
        

Net unrealized appreciation (depreciation)

   $ (9,928,324 )
        

The aggregate cost above includes prior fiscal year end tax adjustments.

(3) Derivative Contracts

Futures contracts outstanding at 2/29/08

 

Description

   Contracts    Value    Expiration
Date
   Unrealized
Appreciation
(Depreciation)
 
           
           

U.S. Treasury Bond (Short)

   92    $ 10,913,500    Jun-08    $ (346,041 )

U.S. Treasury Note 10 yr (Short)

   693      81,275,906    Jun-08      (2,084,984 )
                         
            $ (2,431,025 )
                 

At February 29, 2008, the fund had sufficient cash and/or other liquid securities to cover any commitments under these derivative contracts.

 

14


ITEM 2. CONTROLS AND PROCEDURES.

 

(a) Based upon their evaluation of the effectiveness of the registrant’s disclosure controls and procedures (as defined in Rule 30a-3(c) under the Investment Company Act of 1940 (the “Act”)) as conducted within 90 days of the filing date of this Form N-Q, the registrant’s principal financial officer and principal executive officer have concluded that those disclosure controls and procedures provide reasonable assurance that the material information required to be disclosed by the registrant on this report is recorded, processed, summarized and reported within the time periods specified in the Securities and Exchange Commission’s rules and forms.

 

(b) There were no changes in the registrant’s internal controls over financial reporting (as defined in Rule 30a-3(d) under the Act) that occurred during the registrant’s last fiscal quarter that have materially affected, or are reasonably likely to materially affect, the registrant’s internal control over financial reporting.

 

ITEM 3. EXHIBITS.

File as exhibits as part of this Form a separate certification for each principal executive officer and principal financial officer of the registrant as required by Rule 30a-2(a) under the Act (17 CFR 270.30a-2): Attached hereto.


Notice

A copy of the Agreement and Declaration of Trust, as amended, of the Registrant is on file with the Secretary of State of The Commonwealth of Massachusetts and notice is hereby given that this instrument is executed on behalf of the Registrant by an officer of the Registrant as an officer and not individually and the obligations of or arising out of this instrument are not binding upon any of the Trustees or shareholders individually, but are binding only upon the assets and property of the respective constituent series of the Registrant.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

 

Registrant: MFS HIGH YIELD MUNICIPAL TRUST
By (Signature and Title)*   ROBERT J. MANNING
  Robert J. Manning, President
Date: April 14, 2008

Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the dates indicated.

 

By (Signature and Title)*   ROBERT J. MANNING
  Robert J. Manning, President (Principal Executive Officer)
Date: April 14, 2008

 

By (Signature and Title)*   MARIA F. DWYER
  Maria F. Dwyer, Treasurer (Principal Financial Officer and Accounting Officer)
Date: April 14, 2008

 

* Print name and title of each signing officer under his or her signature.