MFS HIGH YIELD MUNICIPAL TRUST N-Q

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 28, 2009


ITEM 1. SCHEDULE OF INVESTMENTS.


LOGO

 


MFS High Yield Municipal Trust

PORTFOLIO OF INVESTMENTS (Unaudited) 2/28/09

 

Issuer

   Shares/Par    Value ($)

Municipal Bonds – 164.0%

     

Airport & Port Revenue – 5.0%

     

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

   $ 460,000    $ 283,797

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

     3,000,000      2,740,740

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

     500,000      447,580

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

     1,450,000      1,325,329
         
      $ 4,797,446
         

General Obligations - General Purpose – 0.4%

     

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

   $ 400,000    $ 373,828
         

General Obligations - Schools – 2.4%

     

Beverly Hills, CA, Unified School District (Election of 2008), 0%, 2029

   $ 2,195,000    $ 679,353

Beverly Hills, CA, Unified School District (Election of 2008), 0%, 2031

     275,000      73,596

Beverly Hills, CA, Unified School District (Election of 2008), 0%, 2032

     280,000      69,695

Beverly Hills, CA, Unified School District (Election of 2008), 0%, 2033

     560,000      130,726

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

     1,000,000      792,810

Los Angeles, CA, Unified School District, “D”, 5%, 2034

     165,000      157,103

San Jacinto, TX, Community College District, 5.125%, 2038

     430,000      421,404
         
      $ 2,324,687
         

Healthcare Revenue - Hospitals – 39.4%

     

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

   $ 435,000    $ 251,978

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

     625,000      345,031

Atchison, KS, Hospital Rev. (Atchison Hospital Assn.), “A”, 6.75%, 2030

     320,000      260,566

Brunswick, GA, Hospital Authority Rev. (Glynn-Brunswick Memorial Hospital), 5.625%, 2034

     170,000      148,811

California Health Facilities Financing Authority Rev. (Sutter Health), “A”, 5%, 2042

     500,000      414,920

California Statewide Communities Development Authority Rev. (Catholic Healthcare West) “K”, ASSD GTY, 5.5%, 2041

     625,000      549,669

California Statewide Communities Development Authority Rev. (Catholic Healthcare West) “L”, ASSD GTY, 5.25%, 2041

     870,000      733,932

California Statewide Communities Development Authority Rev. (Children’s Hospital), 5%, 2047

     290,000      174,392

California Statewide Communities Development Authority Rev. (St. Joseph Health System), FGIC, 5.75%, 2047

     635,000      609,949

California Statewide Communities Development Authority Rev. (Sutter Health), “B”, 5.25%, 2048

     1,200,000      1,012,620

Colorado Health Facilities Authority Rev. (Poudre Valley Health Care, Inc.), “C”, FSA, 5.25%, 2040

     520,000      454,901

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

     350,000      301,599

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

     850,000      732,454

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

     965,000      1,022,176

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

     500,000      545,230

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

     770,000      671,548

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

     500,000      286,905

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

     90,000      62,326

Harris County, TX, Health Facilities Development Corp., Hospital Rev. (Memorial Hermann Healthcare Systems), “B”, 7.25%, 2035

     205,000      216,546

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

     2,750,000      3,409,560

Illinois Finance Authority Rev. (Children’s Memorial Hospital), “A”, ASSD GTY, 5.25%, 2047

     870,000      727,920

Illinois Finance Authority Rev. (Edward Hospital), “A”, AMBAC, 5.5%, 2040

     1,090,000      838,014

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

     425,000      275,719

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

     500,000      531,115

 

1


MFS High Yield Municipal Trust

PORTFOLIO OF INVESTMENTS (Unaudited) 2/28/09 - continued

 

Issuer

   Shares/Par    Value ($)

Municipal Bonds – continued

     

Healthcare Revenue - Hospitals – continued

     

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

   $ 1,125,000    $ 861,064

Indiana Health & Educational Facilities Finance Authority, Hospital Rev. (Clarian Health), “A”, 5%, 2039

     1,745,000      1,257,569

Indiana Health & Educational Facilities Financing Authority Rev. (Sisters of St. Francis Health Services, Inc.), “E”, FSA, 5.25%, 2041

     660,000      599,564

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

     425,000      351,845

Johnson City, TN, Health & Educational Facilities Board Hospital Rev., 5.5%, 2031

     1,120,000      825,082

Johnson City, TN, Health & Educational Facilities Board Hospital Rev. (Mountain States Health), “A”, 5.5%, 2036

     410,000      294,757

Kentucky Economic Development Finance Authority, Hospital Facilities Rev. (Baptist Healthcare System), “A”, 5.375%, 2024

     300,000      298,278

Kentucky Economic Development Finance Authority, Hospital Facilities Rev. (Baptist Healthcare System), “A”, 5.625%, 2027

     100,000      100,349

Knox County, TN, Health Educational & Housing Facilities, Board Rev. (University Health Systems, Inc.), 5.25%, 2036

     415,000      307,432

Lake County, OH, Hospital Facilities Rev. (Lake Hospital Systems, Inc.), 5.625%, 2029

     435,000      361,820

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

     830,000      620,732

Louisville & Jefferson County, KY, Metro Government Health Facilities Rev. (Jewish Hospital & St. Mary’s Healthcare), 6.125%, 2037

     1,315,000      1,281,915

Louisville & Jefferson County, KY, Metropolitan Government Healthcare Systems Rev. (Norton Healthcare, Inc.), 5.25%, 2036

     1,265,000      945,777

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

     60,000      42,093

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

     60,000      40,795

Maryland Health & Higher Educational Facilities Authority Rev. (Anne Arundel Health System), “A”, 6.75%, 2039

     735,000      746,363

Maryland Health & Higher Educational Facilities Authority Rev. (Medstar Health), BHAC,
5.25%, 2046

     440,000      425,322

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

     120,000      91,322

Massachusetts Health & Educational Facilities Authority Rev. (Boston Medical Center), 5.25%, 2038

     1,000,000      745,870

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

     250,000      194,660

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

     500,000      409,095

Massachusetts Health & Educational Facilities Authority Rev. (Quincy Medical Center), “A”,
6.5%, 2038

     340,000      230,357

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

     125,000      90,495

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

     620,000      434,068

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

     175,000      201,950

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

     25,000      19,075

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

     530,000      427,450

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

     545,000      411,660

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

     285,000      223,104

New York Dormitory Authority Rev., Non-State Supported Debt (Bronx-Lebanon Hospital Center), LOC, 6.5%, 2030

     190,000      192,069

 

2


MFS High Yield Municipal Trust

PORTFOLIO OF INVESTMENTS (Unaudited) 2/28/09 - continued

 

Issuer

   Shares/Par    Value ($)

Municipal Bonds – continued

     

Healthcare Revenue - Hospitals – continued

     

New York Dormitory Authority Rev., Non-State Supported Debt (Bronx-Lebanon Hospital Center), LOC, 6.25%, 2035

   $ 115,000    $ 110,164

Norman, OK, Regional Hospital Authority Rev., 5.375%, 2036

     235,000      157,544

Olympia, WA, Healthcare Facilities Authority Rev. (Catholic Health Initiatives), “D”, 6.375%, 2036

     1,095,000      1,135,778

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

     150,000      171,401

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

     480,000      345,850

Philadelphia, PA, Hospitals & Higher Educational Facilities Rev. (Temple University), “A”, 6.625%, 2023

     375,000      331,725

Ross County, OH, Hospital Rev. (Adena Health System), 5.75%, 2035

     405,000      363,240

Royal Oak, MI, Hospital Finance Authority Rev. (William Beaumont Hospital), 8.25%, 2039

     485,000      515,128

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

     735,000      428,806

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

     985,000      673,159

Skagit County, WA, Public Hospital District No. 001 Rev. (Skagit Valley Hospital), 5.75%, 2032

     90,000      63,509

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

     250,000      207,665

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

     500,000      459,125

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

     550,000      467,577

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

     500,000      379,480

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

     1,085,000      667,394

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

     230,000      159,408

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

     190,000      130,141

Virginia Small Business Financing Authority Hospital Rev., (Wellmont Health Project), “A”, 5.25%, 2037

     470,000      287,222

Washington Health Care Facilities Authority Rev. (Multicare Health Systems), “B”, ASSD GTY, 6%, 2039

     440,000      437,545

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

     105,000      96,249

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

     605,000      657,877

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

     350,000      305,928

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

     750,000      642,353

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

     450,000      509,378

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

     935,000      575,446

Wisconsin Health & Educational Facilities Authority Rev. (Wheaton Franciscan Services), “A”, 5.25%, 2025

     390,000      271,077
         
      $ 38,159,982
         

Healthcare Revenue - Long Term Care – 27.7%

     

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

   $ 750,000    $ 521,693

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

     200,000      148,632

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

     235,000      181,805

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

     500,000      364,150

 

3


MFS High Yield Municipal Trust

PORTFOLIO OF INVESTMENTS (Unaudited) 2/28/09 - continued

 

Issuer

   Shares/Par    Value ($)

Municipal Bonds – continued

     

Healthcare Revenue - Long Term Care – continued

     

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

   $ 250,000    $ 169,445

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

     90,000      62,250

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

     120,000      76,274

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

     695,000      778,588

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

     500,000      606,960

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

     1,000,000      803,050

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

     1,000,000      837,770

Colorado Health Facilities Authority Rev. (American Housing Foundation, Inc.), 8.5%, 2011 (c)

     530,000      620,657

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

     500,000      316,475

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

     1,100,000      723,206

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

     425,000      338,517

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

     500,000      371,645

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

     1,500,000      897,915

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

     600,000      360,600

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

     500,000      600,480

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

     200,000      120,088

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

     420,000      327,159

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

     650,000      441,253

Illinois Finance Authority Rev. (Smith Village), “A”, 6.25%, 2035

     1,000,000      718,040

Illinois Health Facilities Authority Rev. (Smith Crossing), “A”, 7%, 2032

     525,000      419,302

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

     1,010,000      734,199

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

     915,000      1,090,854

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

     550,000      453,860

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

     1,475,000      1,012,912

James City County, VA, Economic Development (WindsorMeade Project), “A”, 5.5%, 2037

     520,000      288,210

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

     250,000      175,678

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

     900,000      704,340

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

     1,120,000      781,738

Kentucky Economic Development Finance Authority Health Facilities Rev. (AHF/Kentucky-IOWA, Inc.), 8%, 2029

     395,000      304,371

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

     525,000      418,955

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

     325,000      354,260

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

     695,000      486,722

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

     1,080,000      804,092

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

     185,000      110,591

 

4


MFS High Yield Municipal Trust

PORTFOLIO OF INVESTMENTS (Unaudited) 2/28/09 - continued

 

Issuer

   Shares/Par    Value ($)

Municipal Bonds – continued

     

Healthcare Revenue - Long Term Care – continued

     

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

   $ 45,000    $ 25,487

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

     250,000      222,993

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

     125,000      103,319

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

     780,000      438,110

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

     575,000      414,914

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

     150,000      93,519

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

     600,000      355,680

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

     400,000      286,336

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

     300,000      195,978

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

     500,000      360,865

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

     500,000      323,705

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

     700,000      783,538

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

     1,630,000      1,178,783

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

     1,025,000      818,288

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

     350,000      280,844

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

     300,000      226,086

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

     280,000      183,616

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

     260,000      152,513

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

     200,000      118,150

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

     500,000      304,455

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

     600,000      400,104

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

     1,250,000      874,738

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

     180,000      113,672
         
      $ 26,782,429
         

Healthcare Revenue - Other – 0.8%

     

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

   $ 650,000    $ 779,721
         

Industrial Revenue - Airlines – 4.1%

     

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

   $ 1,560,000    $ 621,894

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

     1,745,000      745,900

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

     875,000      524,099

Dallas Fort Worth, TX, International Airport Facility Improvement Corp. (American Airlines, Inc.), 5.5%, 2030

     750,000      325,185

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

     1,250,000      1,062,213

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

     40,000      29,791

 

5


MFS High Yield Municipal Trust

PORTFOLIO OF INVESTMENTS (Unaudited) 2/28/09 - continued

 

Issuer

   Shares/Par    Value ($)

Municipal Bonds – continued

     

Industrial Revenue - Airlines – continued

     

New York, NY, City Industrial Development Agencies Rev. (American Airlines, Inc.), 7.75%, 2031

   $ 385,000    $ 288,038

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

     500,000      399,835
         
      $ 3,996,955
         

Industrial Revenue - Chemicals – 0.3%

     

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

   $ 400,000    $ 251,744
         

Industrial Revenue - Environmental Services – 2.1%

     

California Pollution Control Financing Authority, Solid Waste Disposal Rev. (Waste Management, Inc.), “C”, 5.125%, 2023

   $ 655,000    $ 540,866

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

     250,000      251,433

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

     500,000      491,920

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

     360,000      269,107

New Hampshire Business Finance Authority, Solid Waste Disposal Rev. (Waste Management, Inc.), 5.2%, 2027

     660,000      483,008
         
      $ 2,036,334
         

Industrial Revenue - Metals – 0.6%

     

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

   $ 150,000    $ 141,269

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

     435,000      398,804
         
      $ 540,073
         

Industrial Revenue - Other – 4.5%

     

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

   $ 350,000    $ 256,232

California Statewide Communities Development Authority Facilities (Microgy Holdings Project), 9%, 2038

     400,000      336,440

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

     375,000      328,493

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

     455,000      342,570

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

     500,000      427,230

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

     1,000,000      911,350

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

     1,000,000      735,360

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

     250,000      189,755

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

     400,000      273,360

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

     605,000      513,439
         
      $ 4,314,229
         

Industrial Revenue - Paper – 2.9%

     

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

   $ 1,000,000    $ 514,680

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

     400,000      224,924

Camden, AL, Industrial Development Board Exempt Facilities Rev., “B” (Weyerhaeuser Co.), 6.375%, 2013 (c)

     400,000      457,332

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

     1,000,000      666,520

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

     290,000      150,991

Escambia County, FL, Environmental Improvement Rev. (International Paper Co., Projects), “A”, 5%, 2026

     980,000      577,347

 

6


MFS High Yield Municipal Trust

PORTFOLIO OF INVESTMENTS (Unaudited) 2/28/09 - continued

 

Issuer

   Shares/Par    Value ($)

Municipal Bonds – continued

     

Industrial Revenue - Paper – continued

     

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

   $ 400,000    $ 248,136
         
      $ 2,839,930
         

Miscellaneous Revenue - Entertainment & Tourism – 2.8%

     

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

   $ 775,000    $ 723,804

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

     150,000      138,398

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

     720,000      653,249

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

     650,000      426,953

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

     1,100,000      422,488

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

     351,999      352

New York, NY, City Industrial Development Agency Rev. (Queens Baseball Stadium), ASSD GTY, 6.125%, 2029

     30,000      31,874

New York, NY, City Industrial Development Agency Rev. (Queens Baseball Stadium), ASSD GTY, 6.375%, 2039

     25,000      26,447

New York, NY, City Industrial Development Agency Rev. (Queens Baseball Stadium), ASSD GTY, 6.5%, 2046

     100,000      105,945

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

     280,000      182,918
         
      $ 2,712,428
         

Miscellaneous Revenue - Other – 2.4%

     

Austin, TX, Convention Center (Convention Enterprises, Inc.), “A”, XLCA, 5.25%, 2024

   $ 115,000    $ 82,361

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

     350,000      255,745

Dallas, TX, Civic Center Convention Complex Rev., ASSD GTY, 5.25%, 2034

     845,000      829,841

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

     620,000      514,081

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

     630,000      440,351

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

     300,000      228,780
         
      $ 2,351,159
         

Multi-Family Housing Revenue – 9.1%

     

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

   $ 500,000    $ 426,410

Capital Trust Agency, FL, Housing Rev. (Atlantic Housing Foundation), “B”, 7%, 2032

     645,000      514,252

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

     1,000,000      892,610

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

     500,000      506,540

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

     495,000      405,098

District of Columbia Housing Finance Agency (Henson Ridge), “E”, FHA, 5.1%, 2037

     655,000      573,564

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

     935,657      701,527

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

     290,000      244,978

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

     285,000      233,292

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

     500,000      477,295

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

     500,000      453,270

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

     500,000      335,600

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

     605,000      449,914

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

     1,000,000      669,020

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

     500,000      409,005

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

     455,481      417,631

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

     500,000      467,715

 

7


MFS High Yield Municipal Trust

PORTFOLIO OF INVESTMENTS (Unaudited) 2/28/09 - continued

 

Issuer

   Shares/Par    Value ($)

Municipal Bonds – continued

     

Multi-Family Housing Revenue – continued

     

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

   $ 850,000    $ 618,970
         
      $ 8,796,691
         

Sales & Excise Tax Revenue – 4.5%

     

Bolingbrook, IL, Sales Tax Rev., 6.25%, 2024

   $ 500,000    $ 333,550

Massachusetts School Building Authority, Dedicated Sales Tax Rev., AMBAC, 4.75%, 2032

     840,000      795,631

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

     3,000,000      2,375,640

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

     1,010,000      871,620
         
      $ 4,376,441
         

Single Family Housing - Local – 1.6%

     

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

   $ 711,296    $ 590,952

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

     1,000,000      929,460
         
      $ 1,520,412
         

Single Family Housing - State – 3.5%

     

California Housing Finance Agency Rev., “J”, 5.75%, 2047

   $ 1,500,000    $ 1,488,330

Iowa Finance Authority, Single Family Mortgage Rev., “E”, 5.4%, 2032

     920,000      906,724

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

     5,000      5,001

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

     475,000      462,199

Virginia Housing Development Authority, Commonwealth Mortgage, “A-5”, 4.4%, 2015

     210,000      207,969

Virginia Housing Development Authority, Commonwealth Mortgage, “A-5”, 4.4%, 2015

     340,000      336,467
         
      $ 3,406,690
         

State & Agency - Other – 0.5%

     

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

   $ 100,000    $ 82,937

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

     500,000      387,585
         
      $ 470,522
         

State & Local Agencies – 4.3%

     

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

   $ 500,000    $ 492,505

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

     700,000      580,083

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

     1,000,000      941,000

New York Metropolitan Transportation Authority, “A”, 5.125%, 2029

     800,000      778,104

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

     400,000      318,976

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

     80,000      92,893

Puerto Rico Public Finance Corp., Unrefunded, “E”, ETM, 6%, 2026 (c)

     820,000      952,151
         
      $ 4,155,712
         

Student Loan Revenue – 0.6%

     

Massachusetts Educational Financing Authority, Education Loan Rev., “H”, , 6.35%, 2030

   $ 625,000    $ 587,550
         

Tax - Other – 1.4%

     

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

   $ 750,000    $ 631,433

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

     385,000      285,951

New York, NY, City Transitional Finance Authority Building Aid Rev., “S-3”, 5.25%, 2039

     440,000      423,927
         
      $ 1,341,311
         

Tax Assessment – 11.0%

     

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

   $ 500,000    $ 358,045

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

     150,000      74,177

Capital Region Community Development District Rev., FL, “A”, 7%, 2039

     235,000      165,062

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

     710,000      618,524

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

     400,000      201,412

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

     310,000      256,392

 

8


MFS High Yield Municipal Trust

PORTFOLIO OF INVESTMENTS (Unaudited) 2/28/09 - continued

 

Issuer

   Shares/Par    Value ($)

Municipal Bonds – continued

     

Tax Assessment – continued

     

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

   $ 250,000    $ 147,725

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

     175,000      118,251

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

     90,000      50,084

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

     545,000      396,580

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

     325,000      202,163

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

     375,000      222,581

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

     170,000      143,551

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

     500,000      406,340

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

     440,000      513,788

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

     250,000      166,063

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

     615,000      368,877

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

     295,000      188,307

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

     225,000      169,315

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

     500,000      273,450

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

     300,000      133,476

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

     125,000      79,501

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

     45,000      43,995

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

     300,000      245,448

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

     1,490,000      931,846

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

     260,000      171,530

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

     1,015,000      680,304

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

     800,000      407,960

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

     575,000      345,633

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

     200,000      94,496

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

     585,000      358,459

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

     185,000      99,911

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

     484,000      260,077

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

     495,000      281,259

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

     275,000      177,755

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

     980,000      444,499

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

     580,000      346,997

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

     1,325,000      551,399
         
      $ 10,695,232
         

Tobacco – 8.9%

     

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

   $ 1,610,000    $ 1,016,055

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

     2,810,000      1,584,981

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

     785,000      488,717

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

     3,500,000      57,365

 

9


MFS High Yield Municipal Trust

PORTFOLIO OF INVESTMENTS (Unaudited) 2/28/09 - 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)

   $ 1,495,000    $ 1,647,445

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

     1,815,000      108,210

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

     1,710,000      1,003,172

Rhode Island Tobacco Settlement Authority, 6%, 2023

     2,115,000      1,881,885

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

     500,000      356,790

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

     830,000      431,592
         
      $ 8,576,212
         

Toll Roads – 5.6%

     

Bay Area Toll Authority, Toll Bridge Rev. (San Francisco Bay Area), “F1”, 5%, 2034

   $ 1,445,000    $ 1,394,887

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

     1,500,000      796,485

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

     8,750,000      1,299,113

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

     3,000,000      1,983,060
         
      $ 5,473,545
         

Universities - Colleges – 5.3%

     

California Educational Facilities Authority Rev. (University of Southern California), “A”, 5.25%, 2038

   $ 1,270,000    $ 1,298,727

California Municipal Finance Authority Rev. (Biola University), 5.8%, 2028

     100,000      83,857

Florida State University Board of Governors, System Improvement Rev., 6.25%, 2030

     1,000,000      1,061,630

Grand Valley, MI, State University Rev., 5.5%, 2027

     135,000      132,971

Grand Valley, MI, State University Rev., 5.625%, 2029

     65,000      64,017

Harris County, TX, Cultural Education Facilities Rev. (Baylor College of Medicine), “D”, 5.625%, 2032

     280,000      268,834

Massachusetts Health & Educational Facilities Authority Rev. (Simmons College), “I”, 8%, 2029

     255,000      262,829

Savannah, GA, Economic Development Authority Rev. (AASU Student Union, LLC), ASSD GTY, 5.125%, 2039

     1,320,000      1,285,244

University of Southern Indiana Rev., Student Fee, “J”, ASSD GTY, 5.75%, 2028

     300,000      313,776

University of Southern Mississippi Educational Building Corp. (Campus Facilities Project), 5.25%, 2032

     265,000      259,742

University of Southern Mississippi Educational Building Corp. (Campus Facilities Project), 5.375%, 2036

     80,000      78,814
         
      $ 5,110,441
         

Universities - Dormitories – 0.4%

     

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

   $ 735,000    $ 442,176
         

Universities - Secondary Schools – 1.5%

     

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

   $ 1,010,000    $ 849,269

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

     425,000      294,772

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

     535,000      299,750
         
      $ 1,443,791
         

Utilities - Cogeneration – 0.7%

     

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

   $ 320,000    $ 286,019

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

     550,000      420,926
         
      $ 706,945
         

Utilities - Investor Owned – 4.9%

     

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

   $ 220,000    $ 150,528

 

10


MFS High Yield Municipal Trust

PORTFOLIO OF INVESTMENTS (Unaudited) 2/28/09 - continued

 

Issuer

   Shares/Par    Value ($)  

Municipal Bonds – continued

     

Utilities - Investor Owned – continued

     

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

   $ 555,000    $ 242,657  

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

     45,000      29,232  

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

     975,000      974,912  

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

     1,500,000      1,049,700  

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

     1,500,000      1,274,565  

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

     250,000      192,420  

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

     410,000      341,920  

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

     185,000      82,640  

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

     155,000      106,054  

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

     270,000      258,603  
           
      $ 4,703,231  
           

Utilities - Other – 2.8%

     

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

   $ 335,000    $ 238,942  

Main Street Natural Gas, Inc., GA, Gas Project Rev., “B”, 5%, 2019

     325,000      256,867  

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

     705,000      447,499  

Tennessee Energy Acquisition Corp., Gas Rev., “A”, 5.25%, 2021

     1,710,000      1,264,254  

Tennessee Energy Acquisition Corp., Gas Rev., “A”, 5.25%, 2022

     270,000      196,136  

Tennessee Energy Acquisition Corp., Gas Rev., “A”, 5.25%, 2026

     165,000      112,448  

Tennessee Energy Acquisition Corp., Gas Rev., “C”, 5%, 2025

     240,000      161,854  
           
      $ 2,678,000  
           

Water & Sewer Utility Revenue – 2.0%

     

New York, NY, City Municipal Water Finance Authority, Water & Sewer Systems Rev. “DD”, 4.75%, 2035

   $ 790,000    $ 726,263  

Puerto Rico Aqueduct & Sewer Authority Rev., “A”, 6%, 2038

     655,000      595,886  

Puerto Rico Aqueduct & Sewer Authority Rev., “A”, 6%, 2044

     135,000      120,763  

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

     700,000      488,138  
           
      $ 1,931,050  
           

Total Municipal Bonds

      $ 158,676,897  
           

Floating Rate Demand Notes – 6.1%

     

Lincoln County, WY, Pollution Control Rev. (Exxon Mobil Corp.), 0.3%, due 3/02/09

   $ 1,500,000    $ 1,500,000  

Lincoln County, WY, Pollution Control Rev. (Exxon Mobil Corp.), “A”, 0.5%, due 3/02/09

     1,200,000      1,200,000  

Lincoln County, WY, Pollution Control Rev. (Exxon Mobil Corp.), “C”, 0.5%, due 3/02/09

     3,235,000      3,235,000  
           

Total Floating Rate Demand Notes

      $ 5,935,000  
           

Total Investments

      $ 164,611,897  
           

Other Assets, Less Liabilities – 7.4%

        7,146,686  
           

Preferred shares (issued by the trust) – (77.5)%

        (75,000,000 )
           

Net assets applicable to common shares – 100.0%

      $ 96,758,583  
           

 

(a) Mandatory tender date is earlier than stated maturity date.
(b) Non-income producing security.
(c) Refunded bond.
(d) Non-income producing security - in default, or is anticipated to default on next payment. (f) All or a portion of the security has been segregated as collateral for open futures contracts.
(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 $2,431,509, representing 2.51% of net assets applicable to common shares.

 

11


MFS High Yield Municipal Trust

PORTFOLIO OF INVESTMENTS (Unaudited) 2/28/09 - continued

 

(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
   Cost    Current
Market Value
 

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

   7/22/03    $ 775,977    $ 723,804  

Cabazon Band Mission Indians, CA, 8.375%, 2015

   10/04/04      150,000      138,398  

Cabazon Band Mission Indians, CA, 8.75%, 2019

   10/04/04      720,000      653,249  

MuniMae TE Bond Subsidiary LLC, 5.8%, 2049

   10/14/04      1,000,000      669,020  

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

   10/17/01-1/14/02      455,481      417,631  
              

Total Restricted Securities

         $ 2,602,102  

% of Net Assets Applicable to Common Shares

           2.7 %

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

 

COP    Certificate of Participation
ETM    Escrowed to Maturity
LOC    Letter of Credit

Insurers

    
AMBAC    AMBAC Indemnity Corp.
ASSD GTY    Assured Guaranty Insurance Co.
BHAC    Berkshire Hathaway Assurance Corp.
FGIC    Financial Guaranty Insurance Co.
FHA    Federal Housing Administration
FHLMC    Federal Home Loan Mortgage Corp.
FSA    Financial Security Assurance Inc.
GNMA    Government National Mortgage Assn.
MBIA    MBIA Insurance Corp.
XLCA    XL Capital Insurance Co.

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

 

12


MFS High Yield Municipal Trust

Supplemental Information (Unaudited) 2/28/09

(1) Fair Value Disclosure

The fund adopted FASB Statement No. 157, Fair Value Measurements (the “Statement”). 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 assets or liabilities carried at market value. These inputs are categorized into three broad levels. Level 1 includes quoted prices in active markets for identical assets or liabilities. Level 2 includes other significant observable market-based inputs (including quoted prices for similar securities, interest rates, prepayment speed, and credit risk). Level 3 includes 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. The following is a summary of the levels used as of February 28, 2009 in valuing the fund’s assets or liabilities carried at market value:

 

     Level 1    Level 2    Level 3    Total

Investments in Securities

   $ —      $ 164,611,897    $ —      $ 164,611,897

Other Financial Instruments

   $ 502,368    $ —      $ —      $ 502,368

(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

   $ 196,943,612  
        

Gross unrealized appreciation

   $ 4,184,465  

Gross unrealized depreciation

     (36,516,180 )
        

Net unrealized appreciation (depreciation)

   $ (32,331,715 )
        

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

(3) Derivative Contracts at 2/28/09

Futures contracts outstanding at 2/28/09

 

Description

   Contracts    Value    Expiration
Date
   Unrealized
Appreciation
(Depreciation)

U.S. Treasury Note 10 yr (Short)

   264    31,688,250    Jun-09    $ 154,730

U.S. Treasury Note 30 yr (Short)

   46    5,673,813    Jun-09      347,638
               
            $ 502,368
               

At February 28, 2009, the fund had sufficient cash and/or other liquid securities to cover any commitments under these derivative contracts.

 

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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)*    MARIA F. DWYER
  Maria F. Dwyer, President

Date: April 20, 2009

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)*    MARIA F. DWYER
  Maria F. Dwyer, President (Principal Executive Officer)

Date: April 20, 2009

 

By (Signature and Title)*    JOHN M. CORCORAN
  John M. Corcoran, Treasurer (Principal Financial Officer and Accounting Officer)

Date: April 20, 2009

 

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