gug52547-nq.htm
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, DC  20549

FORM N-Q

QUARTERLY SCHEDULE OF PORTFOLIO HOLDINGS OF REGISTERED
MANAGEMENT INVESTMENT COMPANY

Investment Company Act file number
811-22437
 
Guggenheim Build America Bonds Managed Duration Trust
(Exact name of registrant as specified in charter)
 
2455 Corporate West Drive Lisle, IL 60532
  (Address of principal executive offices) (Zip code)
 
Kevin M. Robinson
 
2455 Corporate West Drive Lisle, IL 60532
(Name and address of agent for service)

Registrant’s telephone number, including area code: (630) 505-3700

Date of fiscal year end: May 31
Date of reporting period: June 1, 2011-August 31, 2011

Form N-Q is to be used by management investment companies, other than small business investment companies registered on Form N-5 (§§ 239.24 and 274.5 of this chapter), to file reports with the Commission, not later than 60 days after the close of the first and third fiscal quarters, pursuant to rule 30b1-5 under the Investment Company Act of 1940 (17 CFR 270.30b1-5).  The Commission may use the information provided on Form N-Q in its regulatory, disclosure review, inspection, and policymaking roles.

A registrant is required to disclose the information specified by Form N-Q, and the Commission will make this information public.  A registrant is not required to respond to the collection of information contained in Form N-Q unless the Form displays a currently valid Office of Management and Budget (“OMB”) control number.  Please direct comments concerning the accuracy of the information collection burden estimate and any suggestions for reducing the burden to the Secretary, Securities and Exchange Commission, 100 F Street, NE, Washington, DC 20549-1090.  The OMB has reviewed this collection of information under the clearance requirements of 44 U.S.C. § 3507.
 
 
 

 
 
Item 1.     Schedule of Investments.
         Attached hereto.
 
GBAB Guggenheim Build America Bonds Managed Duration Trust
Portfolio of Investments
August 31, 2011 (unaudited)
 
               
Principal
Amount
 
Description
Rating (S&P)*
Coupon
Maturity
Optional
Call Provisions**
Value
   
Long-Term Investments - 127.7%
         
   
Municipal Bonds - 106.4%
         
   
Alabama - 2.9%
         
$3,000,000
 
Alabama State University, General Tuition and Fee Revenue Bonds, Taxable Direct-Pay
Build America Bonds, (Assured GTY)(a)(i)
 
AA+
 
7.10%
 
09/01/2035
 
09/01/20 @ 100
 
$3,247,440
5,000,000
 
Alabama State University, General Tuition and Fee Revenue Bonds, Taxable Direct-Pay
Build America Bonds, (Assured GTY)(a)(i)
 
AA+
 
7.20%
 
09/01/2038
 
09/01/20 @ 100
 
5,425,150
2,000,000
 
Alabama State University, General Tuition and Fee Revenue Bonds, Taxable Direct-Pay
Build America Bonds, (Assured GTY)(a)(i)
 
AA+
 
7.25%
 
09/01/2040
 
09/01/20 @ 100
 
2,161,040
             
10,833,630
               
   
California - 20.2%
         
500,000
 
Alhambra Unified School District, Elementary Schools Improvement District, Los Angeles
County, California, Election of 2008 General Obligation Bonds, Federally Taxable, Series B-1
A+
6.70%
02/01/2026
N/A
555,450
10,000,000
 
California, General Obligation Bonds, Various Purpose, Taxable Build America Bonds(a)
A-
7.70%
11/01/2030
11/01/20 @ 100
11,031,900
3,000,000
 
Culver City Redevelopment Agency, California, Taxable Tax Allocation Bonds, Culver
City Redevelopment Project, Series 2011B
 
A
 
8.00%
 
11/01/2020
 
N/A
 
3,116,280
340,000
 
Cypress Elementary School District (Orange County, California), General Obligation Bonds,
Direct Pay Qualified School Construction Bonds, 2008 Election, Series B-2 (i)
A+
6.05%
08/01/2021
N/A
363,164
660,000
 
Cypress Elementary School District (Orange County, California), General Obligation Bonds,
Direct Pay Qualified School Construction Bonds, 2008 Election, Series B-2(i)
A+
6.65%
08/01/2025
N/A
708,708
7,500,000
 
Long Beach Unified School District, California, Qualified School Construction Bonds,
Federally Taxable, Election of 2008, General Obligation Bonds, Series B-1
 
AA-
 
5.91%
 
08/01/2025
 
N/A
 
8,228,475
10,000,000
 
Los Angeles, California, Department of Water & Power Revenue, Taxable Build America
Bonds(a)
 
AA-
 
7.00%
 
07/01/2041
 
07/01/21 @ 100
 
11,326,600
10,000,000
 
Los Angeles, California, Department of Water & Power Revenue, Taxable Build America
Bonds(a)
 
AA
 
7.00%
 
07/01/2041
 
07/01/20 @ 100
 
11,251,500
5,000,000
 
Metropolitan Water District, Southern California, Water Revenue Bonds, 2010
Authorization, Taxable Build America Bonds, Series A(a)
 
AAA
 
6.95%
 
07/01/2040
 
07/01/20 @ 100
 
5,636,350
1,025,000
 
Monrovia Unified School District, Los Angeles County, California, Election of 2006
General Obligation Bonds, Build America Bonds, Federally Taxable, Series C-1(a)(i)
A+
7.25%
08/01/2028
N/A
1,107,543
1,000,000
 
Placentia-Yorba Linda Unified School District (Orange County, California), General
Obligation Bonds, Federally Taxable Direct-Pay Qualified School Construction Bonds,
Election of 2008, Series E
AA-
5.40%
02/01/2026
N/A
990,060
5,000,000
 
Riverside Community College District, Riverside County, California, Election of 2004
General Obligation Bonds, Taxable Build America Bonds, Series 2010 D-1(a)
 
AA
 
7.02%
 
08/01/2040
 
08/01/20 @ 100
 
5,202,850
2,245,000
 
Santa Ana Unified School District, California, General Obligation Bonds, Federal Taxable
Build America Bonds(a)
 
Aa2
 
6.80%
 
08/01/2030
 
N/A
 
2,611,047
7,755,000
 
Santa Ana Unified School District, California, General Obligation Bonds, Federal Taxable
Build America Bonds(a)
 
Aa2
 
7.10%
 
08/01/2040
 
N/A
 
9,355,555
3,330,000
 
Sonoma Valley Unified School District, General Obligation, Federally Taxable Build
America Bonds
AA-
7.12%
08/01/2028
08/01/20 @ 100
3,510,986
             
74,996,468
               
   
Colorado - 3.1%
         
7,500,000
 
Colorado, Building Excellent Schools Today, Certificates of Participation, Taxable Build
America Bonds, Series 2010E(a)
AA-
7.02%
03/15/2031
03/15/21 @ 100
8,566,500
2,500,000
 
Colorado, Building Excellent Schools Today, Certificates of Participation, Taxable
Qualified School Construction, Series 2010-D
AA-
6.82%
03/15/2028
N/A
3,039,225
             
11,605,725
               
   
Florida - 4.4%
         
10,000,000
 
Miami-Dade County, Florida, Transit Sales Surtax Revenue, Taxable Build America
Bonds, Series B(a)
AA
6.91%
07/01/2039
07/01/19 @ 100
10,921,800
5,000,000
 
Orlando, Florida, Community Redevelopment Agency, Taxable Tax Increment Revenue
Build America Bonds, Series 2010B(a)(i)
A
7.78%
09/01/2040
09/01/20 @ 100
5,469,450
             
16,391,250
               
   
Georgia - 1.4%
         
5,000,000
 
Georgia Municipal Association, Inc., Certificates of Participation, DeKalb County Public
Schools Project, (AGM)
AA+
5.21%
12/01/2022
N/A
5,054,000
               
   
Illinois - 13.1%
         
5,000,000
 
Chicago, Illinois, Board of Education, Unlimited Tax General Obligation Bonds, Dedicated
Revenues, Taxable Build America Bonds, Series 2010D(a)
 
AA-
 
6.52%
 
12/01/2040
 
N/A
 
5,447,050
5,100,000
 
Chicago, Illinois, Second Lien Wastewater Transmission Revenue Project Bonds, Taxable
Build America Bonds, Series 2010B(a)(i)
 
A+
 
6.90%
 
01/01/2040
 
N/A
 
6,110,616
2,990,000
 
Chicago, Illinois, Second Lien Water Revenue Bonds, Taxable Build America Bonds,
Series 2010B(a)(i)
 
AA-
 
6.74%
 
11/01/2040
 
N/A
 
3,595,983
5,000,000
 
Illinois, General Obligation Bonds, Taxable Build America Bonds, Series 2010-5(a)
A+
7.35%
07/01/2035
N/A
5,448,650
7,140,000
 
Northern Illinois Municipal Power Agency, Power Project Taxable Revenue Bonds, Prairie
State Project Build America Bonds(a)
 
A2
 
7.62%
 
01/01/2030
 
N/A
 
8,195,720
2,860,000
 
Northern Illinois Municipal Power Agency, Power Project Taxable Revenue Bonds, Prairie
State Project Build America Bonds(a)
 
A2
 
7.82%
 
01/01/2040
 
N/A
 
3,437,520
4,500,000
 
Northern Illinois University, Auxiliary Facilities System Revenue Bonds, Build America
Program, Taxable, Series 2010, (AGM)(a)(i)
 
Aa3
 
7.95%
 
04/01/2035
 
04/01/20 @ 100
 
5,120,865
5,000,000
 
Northern Illinois University, Auxiliary Facilities System Revenue Bonds, Build America
Program, Taxable, Series 2010, (AGM)(a)
 
Aa3
 
8.15%
 
04/01/2041
 
04/01/20 @ 100
 
5,716,600
3,000,000
 
Southwestern Illinois, Development Authority, Taxable Local Government, Program
Revenue Bonds, Flood Prevention District Council Project, Recovery Zone Economic
Development Bonds, Series 2010C(i)
AA
7.23%
10/15/2035
04/15/20 @ 100
3,265,170
2,000,000
 
Southwestern Illinois, Development Authority, Taxable Local Government, Program
Revenue Bonds, Flood Prevention District Project, Build America Bonds, Series 2010-B(a)(i)
AA
7.03%
04/15/2032
04/15/20 @ 100
2,073,520
             
48,411,694
               
   
Indiana - 5.4%
         
8,690,000
 
Evansville-Vanderburgh Independent School Building Corporation, Unlimited Taxable Ad
Valorem Property Tax First Mortgage Bonds, Series 2010E(a)
 
AA+
 
6.50%
 
01/15/2030
 
07/15/20 @ 100
 
9,289,784
10,000,000
 
Noblesville Multi-School Building Corporation, Hamilton County, Indiana, Taxable
Unlimited Ad Valorem Property Tax First Mortgage Bonds, Build America Bonds,
Series 2010(a)
AA+
6.50%
07/15/2030
01/15/21 @ 100
10,904,100
             
20,193,884
               
   
Louisiana - 0.3%
         
1,055,000
 
Tangipahoa Parish Hospital Service District No. 1, Louisiana, Taxable Hospital Revenue
Bonds, North Oaks Health System Project, Build America Bonds, Series 2009A,
(Assured GTY)(a)(i)
AA+
7.20%
02/01/2042
02/01/20 @ 100
1,105,260
               
   
Michigan - 4.6%
         
415,000
 
Comstock Park Public Schools, Kent County, Michigan, 2011 School Building and Site
Bonds, General Obligation - Unlimited Tax, Federally Taxable - Qualified School
Construction Bonds - Direct Payment, Series A
AA-
6.30%
05/01/2026
05/01/21 @ 100
437,568
690,000
 
Detroit, Michigan, School District, Build America Bonds(a)(i)
AA-
7.75%
05/01/2039
N/A
804,726
5,000,000
 
Detroit, Michigan, School District, School Building and Site Bonds, Unlimited Tax General
Obligation Bonds, Taxable Build America Bonds, Series, Series 2010B(a)(i)
AA-
6.85%
05/01/2040
05/01/20 @ 100
5,103,900
1,640,000
 
Detroit, Michigan, School District, School Building and Site Bonds, Unlimited Tax General
Obligation Bonds, Taxable Qualified School Construction Bonds, Series 2010A(i)
AA-
6.65%
05/01/2029
N/A
1,730,331
3,000,000
 
Fraser Public School District, Macomb County, Michigan, General Obligation Federally
Taxable School Construction Bonds, 2011 School Building and Site Bonds, Series B
AA-
6.05%
05/01/2026
05/01/21 @ 100
3,158,100
1,000,000
 
Oakridge, Michigan, Public Schools, Unlimited Tax General Obligation Bonds(i)
AA-
6.75%
05/01/2026
05/01/20 @ 100
1,055,160
2,500,000
 
Whitehall District Schools, Muskegon County, Michigan, 2010 School Building and Site
Bonds, General Obligation, Unlimited Tax Bonds, Taxable Qualified School Construction
Bonds, Series A
AA-
6.10%
05/01/2026
05/01/20 @ 100
2,606,450
2,000,000
 
Whitehall District Schools, Muskegon County, Michigan, 2010 School Building and Site
Bonds, General Obligation, Unlimited Tax Bonds, Taxable Qualified School Construction
Bonds, Series A
AA-
6.50%
05/01/2029
05/01/20 @ 100
2,090,620
             
16,986,855
               
   
Minnesota - 0.9%
         
1,660,000
 
St. Paul Housing & Redevelopment Authority, Federally Taxable Revenue Bonds
AA
7.25%
02/01/2035
02/01/21 @ 100
1,767,601
1,540,000
 
St. Paul Housing & Redevelopment Authority, Federally Taxable Revenue Bonds
AA
7.50%
02/01/2040
02/01/21 @ 100
1,635,388
             
3,402,989
               
   
Mississippi - 2.0%
         
5,000,000
 
Medical Center Educational Building Corporation, Taxable Build America Bonds,
University of Mississippi Medical Center Facilities Expansion and Renovation Project,
Series 2010A(a)(i)
AA-
6.84%
06/01/2035
06/01/20 @ 100
5,267,000
1,000,000
 
Mississippi, Hospital Equipment and Facilities Authority, Taxable Build America Revenue
Bonds, Forrest County General Hospital Project, Series 2010(a)(i)
A2
7.27%
01/01/2032
01/01/20 @ 100
1,036,710
905,000
 
Mississippi, Hospital Equipment and Facilities Authority, Taxable Build America Revenue
Bonds, Forrest County General Hospital Project, Series 2010(a)(i)
A2
7.39%
01/01/2040
01/01/20 @ 100
929,607
             
7,233,317
               
   
Nevada - 2.8%
         
1,425,000
 
Clark County, Nevada, Airport Revenue Bonds, Build America Bonds, Series B(a)
AA-
6.88%
07/01/2042
07/01/19 @ 100
1,523,781
1,200,000
 
Las Vegas Valley Water District, Nevada, Limited Tax General Obligation Water Bonds,
Taxable Build America Bonds, Series 2009A(a)
 
AA+
 
7.10%
 
06/01/2039
 
06/01/19 @ 100
 
1,275,576
1,500,000
 
Nevada System of Higher Education University, Revenue Bonds, Build America Bonds(a)
AA-
7.60%
07/01/2030
07/01/20 @ 100
1,720,650
5,050,000
 
Nevada System of Higher Education University, Revenue Bonds, Build America Bonds(a)
AA-
7.90%
07/01/2040
07/01/20 @ 100
5,836,436
             
10,356,443
               
   
New Jersey - 6.3%
         
8,000,000
 
Camden County Improvement Authority, Camden County, New Jersey, Lease Revenue
Bonds, Cooper Medical School of Rowan University Project, Series 2010A(a)(i)
A+
7.75%
07/01/2034
07/01/20 @ 100
8,608,080
2,000,000
 
Camden County Improvement Authority, Camden County, New Jersey, Lease Revenue
Bonds, Cooper Medical School of Rowan University Project, Series 2010A(a)(i)
A+
7.85%
07/01/2035
07/01/20 @ 100
2,156,920
10,000,000
 
New Jersey Turnpike Authority, Turnpike Revenue Bonds, Federally Taxable Issuer
Subsidy, Build America Bonds, Series 2010A(a)
A+
7.10%
01/01/2041
N/A
12,626,100
             
23,391,100
               
   
New York - 6.0%
         
5,000,000
 
Metropolitan Transportation Authority, New York, Transportation Revenue Bonds,
Taxable Build America Bonds, Series 2010E(a)
 
A
 
7.13%
 
11/15/2030
 
11/15/20 @ 100
 
5,494,400
5,000,000
 
Metropolitan Transportation Authority, New York, Transportation Revenue Bonds,
Taxable Build America Bonds, Series 2010B-1(a)(i)
 
A
 
6.55%
 
11/15/2031
 
N/A
 
5,624,550
10,000,000
 
Westchester County Health Care Corporation, Revenue Bonds, Taxable Build America
Bonds, Series 2010(a)(i)
BBB
8.57%
11/01/2040
N/A
11,172,900
             
22,291,850
               
   
Ohio - 5.4%
         
5,000,000
 
American Municipal Power, Inc., Combined Hydroelectric Projects Revenue Bonds, New
Clean Renewable Energy Bonds, Series 2010C(i)
 
A
 
7.33%
 
02/15/2028
 
N/A
 
5,940,700
1,950,000
 
Cuyahoga County, Ohio, Hospital Revenue Bonds, The Metrohealth System, Build
America Bonds, Taxable, Series 2009B(a)(i)
 
A-
 
8.22%
 
02/15/2040
 
N/A
 
2,203,558
2,500,000
 
Madison Local School District, Richland County, Ohio, School Improvement, Taxable
Build America Bonds, Series 2010A(a)
 
AA
 
6.90%
 
12/01/2034
 
12/01/20 @ 100
 
2,615,250
2,500,000
 
Madison Local School District, Richland County, Ohio, School Improvement, Taxable
Build America Bonds, Series 2010A(a)
 
AA
 
7.15%
 
12/01/2039
 
12/01/20 @ 100
 
2,605,150
2,500,000
 
Madison Local School District, Richland County, Ohio, School Improvement, Taxable
Build America Bonds, Series 2010A(a)
 
AA
 
7.30%
 
12/01/2043
 
12/01/20 @ 100
 
2,604,450
2,500,000
 
Madison Local School District, Richland County, Ohio, School Improvement, Taxable
Qualified School Construction Bonds, Series 2010B
 
AA
 
6.65%
 
12/01/2029
 
12/01/20 @ 100
 
2,687,450
1,230,000
 
Toronto City School District, Ohio, Qualified School Construction Bonds General
Obligation Bonds(i)
AA
 
7.00%
12/01/2028
12/01/20 @ 100
1,308,585
             
19,965,143
               
   
Pennsylvania - 3.7%
         
4,865,000
 
Lebanon, Pennsylvania, Sewer Revenue Bonds, Taxable Build America Bonds,
Series B of 2010(a)
A+
7.14%
12/15/2035
06/15/20 @ 100
5,216,448
7,500,000
 
Pittsburgh, Pennsylvania, School District, Taxable Qualified School Construction Bonds,
Series D
A
6.85%
09/01/2029
N/A
8,677,125
             
13,893,573
               
   
South Carolina - 1.4%
         
5,000,000
 
Horry County, South Carolina, Taxable Airport Revenue Bonds, Recovery Zone Economic
Development Bonds, Series 2010B(a)(i)
A-
7.33%
07/01/2040
N/A
5,161,750
               
   
South Dakota - 1.0%
         
3,490,000
 
Pierre, South Dakota, Taxable Electric Revenue Bonds, Recovery Zone Economic
Development Bonds, Series 2010C(a)(i)
A2
7.50%
12/15/2040
12/15/19 @ 100
3,661,150
               
   
Texas - 5.8%
         
10,000,000
 
Dallas, Texas, Convention Center Hotel Development Corporation, Hotel Revenue Bonds,
Taxable Build America Bonds, Series 2009B(a)(i)
 
A+
 
7.09%
 
01/01/2042
 
N/A
 
10,928,800
10,000,000
 
El Paso, Texas, Combination Tax and Revenue Certification of Obligation, Taxable Build
America Bonds, Series 2010B(a)
AA
6.70%
08/15/2036
08/15/20 @ 100
10,632,100
             
21,560,900
               
   
Vermont - 2.7%
         
2,155,000
 
Vermont State Colleges, Revenue Bonds, Taxable Build America Bonds, Series 2010B(a)(i)
A+
6.10%
07/01/2025
07/01/20 @ 100
2,239,131
7,500,000
 
Vermont State Colleges, Revenue Bonds, Taxable Build America Bonds, Series 2010B(a)(i)
A+
7.21%
07/01/2040
07/01/20 @ 100
7,850,325
             
10,089,456
               
   
Washington - 9.6%
         
5,000,000
 
Anacortes, Washington, Utility System Improvement Revenue Bonds, Build America
Bonds, Series 2010B(a)(i)
 
AA-
 
6.48%
 
12/01/2030
 
12/01/20 @ 100
 
5,234,550
2,000,000
 
Auburn, Washington, Utility System Revenue Bonds, Taxable Build America Bonds,
Series 2010B(a)(i)
 
AA
 
6.40%
 
12/01/2030
 
12/01/20 @ 100
 
2,200,780
5,000,000
 
Central Washington University, System Revenue Bonds, 2010, Taxable Build America
Bonds, Series B(a)(i)
 
A1
 
6.50%
 
05/01/2030
 
N/A
 
5,255,550
5,800,000
 
Public Hospital District No. 1, King County, Washington, Valley Medical Center, Hospital
Facilities Revenue Bonds, Series 2010B(a)(i)
 
BBB+
 
8.00%
 
06/15/2040
 
06/15/20 @ 100
 
6,014,890
5,000,000
 
Washington State Convention Center Public Facilities District, Lodging Tax Bonds,
Taxable Build America Bonds, Series 2010B(a)
 
A+
 
6.79%
 
07/01/2040
 
N/A
 
5,805,800
3,325,000
 
Washington State University, Housing and Dining System Revenue Bonds, Taxable Build
America Bonds, Series 2010B(a)(i)
 
A+
 
7.10%
 
04/01/2032
 
N/A
 
3,617,633
6,675,000
 
Washington State University, Housing and Dining System Revenue Bonds, Taxable Build
America Bonds, Series 2010B(a)(i)
A+
7.40%
04/01/2041
N/A
7,325,145
             
35,454,348
               
   
West Virginia - 3.4%
         
10,000,000
 
State of West Virginia, Higher Education Policy Commission, Revenue Bonds, Federally
Taxable Build America Bonds 2010, Series B(a)
A+
7.65%
04/01/2040
N/A
12,773,000
               
   
Total Municipal Bonds - 106.4%
         
   
(Cost $357,396,723)
       
394,813,785
               
   
Corporate Bonds - 8.8%
         
   
Advertising - 0.0%
         
150,000
 
inVentiv Health, Inc.(c)
Caa2
10.00%
08/15/2018
08/15/14 @ 105
135,375
               
   
Airlines - 0.8%
         
552,936
 
Atlas Air 00-1 Class A Pass Through Trust, Series 00-1
NR
8.71%
1/2/2019
N/A
572,289
168,949
 
Atlas Air 99-1 Class A-2 Pass Through Trust, Series 991A
NR
6.88%
04/02/2014
N/A
160,501
2,000,000
 
Delta Air Lines 2011-1 Class B Pass Through Trust, Series 1B
BB
7.13%
10/15/2014
N/A
1,994,100
163,000
 
Global Aviation Holdings, Inc.(d)
D
14.00%
08/15/2013
08/15/12 @ 111
134,883
             
2,861,773
               
   
Building Materials - 0.4%
         
2,000,000
 
Cemex SAB de CV (Mexico)(c )
B
9.00%
01/11/2018
01/11/15 @ 105
1,650,000
               
   
Commercial Services - 0.9%
         
2,200,000
 
DynCorp International, Inc.
B-
10.38%
07/01/2017
07/01/14 @ 105
2,101,000
1,140,000
 
NCO Group, Inc.
CCC-
11.88%
11/15/2014
11/15/11 @ 103
1,054,500
             
3,155,500
               
   
Computers - 0.4%
         
500,000
 
Compucom Systems, Inc.(c)
B
12.50%
10/01/2015
10/01/12 @ 103
503,750
900,000
 
iGATE Corp.(c)
B+
9.00%
05/01/2016
05/01/14 @ 105
850,500
             
1,354,250
               
   
Distribution & Wholesale - 0.2%
         
550,000
 
Baker & Taylor, Inc.(c)
CCC+
11.50%
07/01/2013
07/01/12 @ 100
418,000
175,000
 
Intcomex, Inc.
B-
13.25%
12/15/2014
12/15/12 @ 107
170,625
             
588,625
               
   
Diversified Financial Services - 0.1%
         
500,000
 
McGuire Air Force Base/Fort Dix Privatized Military Housing Project(c )
AA-
5.61%
09/15/2051
N/A
466,475
               
   
Engineering & Construction - 0.7%
         
2,200,000
 
Alion Science and Technology Corp.(e)
B
12.00%
11/01/2014
04/01/13 @ 105
2,079,000
1,000,000
 
Alion Science and Technology Corp.
CCC
10.25%
02/01/2015
02/01/12 @ 103
680,000
             
2,759,000
               
   
Entertainment - 1.1%
         
1,600,000
 
Diamond Resorts Corp.
B-
12.00%
08/15/2018
08/15/14 @ 106
1,552,000
1,810,000
 
Lions Gate Entertainment, Inc.(c)
B-
10.25%
11/01/2016
11/01/13 @ 105
1,791,900
1,000,000
 
WMG Acquisition Corp.(c)
B-
11.50%
10/01/2018
10/01/14 @ 109
910,000
             
4,253,900
               
   
Food - 0.6%
         
2,125,000
 
Bumble Bee Acquisition Corp.(c)
B
9.00%
12/15/2017
12/15/14 @ 105
2,061,250
               
   
Health Care Services - 0.1%
         
550,000
 
Apria Healthcare Group, Inc.
BB+
11.25%
11/01/2014
11/01/12 @ 103
541,750
               
   
Healthcare-Services - 0.2%
         
325,000
 
OnCure Holdings, Inc.
B
11.75%
05/15/2017
05/15/14 @ 106
293,313
423,503
 
Symbion, Inc.(e)
CCC+
11.00%
08/23/2015
08/23/12 @ 103
421,385
             
714,698
               
   
Internet - 1.1%
         
4,250,000
 
GXS Worldwide, Inc.(i)
B
9.75%
06/15/2015
06/15/12 @ 105
4,165,000
               
   
Machinery-Diversified - 0.1%
         
250,000
 
Tempel Steel Co.(c)
B
12.00%
08/15/2016
02/15/14 @ 109
252,032
               
   
Mining - 0.1%
         
400,000
 
Midwest Vanadium Pty Ltd. (Australia)(c )
B-
11.50%
02/15/2018
02/15/15 @ 106
378,000
               
   
Packaging & Containers - 0.6%
         
1,950,000
 
Pregis Corp.
CCC
12.38%
10/15/2013
10/15/11 @ 100
1,794,000
300,000
 
Pretium Packaging LLC/Pretium Finance, Inc.(c)
B
11.50%
04/01/2016
04/01/14 @ 106
294,750
             
2,088,750
               
   
Real Estate Investment Trusts - 0.2%
         
750,000
 
Wells Operating Partnership II LP(c )
BBB-
5.88%
04/01/2018
N/A
794,637
               
   
Retail - 0.3%
         
1,150,000
 
Liz Claiborne, Inc.(c)
B-
10.50%
04/15/2019
04/15/14 @ 105
1,158,625
               
   
Software - 0.1%
         
400,000
 
Lawson Software, Inc.(c)
B-
11.50%
07/15/2018
07/15/15 @ 106
366,000
               
   
Textiles - 0.0%
         
150,000
 
Empire Today LLC/Empire Today Finance Corp.(c)
B-
11.38%
02/01/2017
02/01/14 @ 106
140,250
               
   
Transportation - 0.3%
         
550,000
 
Marquette Transportation Company/Marquette Transportation Finance Corp.
B-
10.88%
01/15/2017
01/15/13 @ 108
537,625
400,000
 
United Maritime Group, LLC/United Maritime Group Finance Corp.
B
11.75%
06/15/2015
12/15/12 @ 106
403,000
             
940,625
               
   
Trucking & Leasing - 0.5%
         
1,904,000
 
AWAS Aviation Capital Ltd. (Ireland)(c)
BBB-
7.00%
10/15/2016
10/18/13 @ 104
1,837,360
               
   
Total Corporate Bonds - 8.8%
         
   
(Cost $33,883,179)
       
32,663,875
               
   
Asset Backed Securities - 7.7%
         
   
Collateralized Debt Obligation - 2.6%
         
335,158
 
Commodore CDO I Ltd., Series 2005-3A, Class A1A (c) (f)
CCC-
0.55%
03/06/2040
N/A
122,333
260,437
 
Diversified Asset Securitization Holdings II LP, Series 1X, Class A1L(f)
A
0.74%
09/15/2035
N/A
220,314
120,973
 
G-Star Ltd., Series 2003-3A, Class A1(c) (f)
A+
0.82%
03/13/2038
N/A
114,320
798,529
 
Putnam Structured Product, Series 2002-1A, Class A2(c) (f)
BB+
0.89%
01/10/2038
N/A
634,423
9,111,700
 
Putnam Structured Product, Series 2003-1A, Class A1LB(c) (f)
B
0.66%
10/15/2038
N/A
7,884,081
500,000
 
TIAA Real Estate Ltd., Series 2002-1A, Class III(c) (g)
BBB+
7.60%
05/22/2037
N/A
495,885
             
9,471,356
               
   
Collateralized Loan Obligation - 2.5%
         
500,000
 
Alm Loan Funding, Series 2010-3A, Class C(c) (f)
BBB
4.30%
11/20/2020
N/A
477,975
1,000,000
 
CapitalSource Commercial Loan Trust, Series 2006-2A, Class D(c) (f)
B+
1.73%
09/20/2022
N/A
921,420
2,000,000
 
Churchill Financial Cayman Ltd., Series 2007-1A, Class C (c) (f) (i)
A+
1.50%
07/10/2019
N/A
1,533,960
1,000,000
 
Churchill Financial Cayman Ltd., Series 2007-1A, Class D1 (c) (f)
BBB+
2.85%
07/10/2019
N/A
807,450
1,000,000
 
Churchill Financial Cayman Ltd., Series 2007-1A, Class D2 (c)
BBB+
8.37%
07/10/2019
N/A
967,090
300,000
 
Cratos CLO Ltd., Series 2007-1A, Class C (c) (f)
AA-
1.40%
05/19/2021
N/A
240,183
500,000
 
DFR Middle Market CLO Ltd., Series 2007-1A, Class C(c) (f)
A
2.55%
07/20/2019
N/A
444,105
550,000
 
Eastland CLO Ltd., Series 2007-1A, Class A2B (c) (f)
A+
0.58%
05/01/2022
N/A
422,004
1,992,806
 
Newstar Trust, Series 2005-1A, Class C(c) (f)
B+
1.10%
07/25/2018
N/A
1,703,849
514,262
 
Sargas CLO II Ltd., Series 2006-1A, Class E(c) (f)
B+
4.25%
10/20/2018
N/A
459,632
1,500,000
 
Standard Chartered PLC (United Kingdom)(f)
CCC
0.29%
1/14/2012
N/A
1,412,310
             
9,389,978
               
   
Automotive - 0.0%
         
82,042
 
Bush Truck Leasing LLC, Series 2011-AA, Class C(c)
NR
5.00%
09/25/2018
N/A
81,825
               
   
Timeshare - 0.2%
         
788,941
 
Silverleaf Finance LLC, Series 2011-A, Class A(c)
NR
9.00%
06/15/2023
N/A
744,098
               
               
   
Transportation - 1.5%
         
5,596,961
 
Airplanes Pass-Through Trust, Series 2001-1A, Class A9(f)(i)
CCC
0.76%
03/15/2019
N/A
3,582,055
1,955,782
 
Vega Containervessel PLC, Series 2006-1A, Class A(c)
Ba3
5.56%
02/10/2021
N/A
1,838,435
             
5,420,490
               
   
Whole Business - 0.9%
         
1,300,000
 
Adams Outdoor Advertising, LP, Series 2010-1, Class B(c)
Ba2
8.84%
12/20/2040
N/A
1,444,696
1,825,000
 
Adams Outdoor Advertising, LP, Series 2010-1, Class C(c)
B3
10.76%
12/20/2040
N/A
2,039,070
             
3,483,766
               
   
Total Asset Backed Securities - 7.7%
         
   
(Cost $28,498,584)
       
28,591,513
               
   
Collateralized Mortgage Obligations - 0.5%
         
   
Commercial Mortgage Backed Security - Traditional - 0.5%
         
$2,000,000
 
GS Mortgage Securities Corp. II, Series 2007-EOP, Class H(c) (f)
BBB-
3.58%
03/06/2020
N/A
                       1,944,347
   
(Cost $1,791,770)
         
               
   
Term Loans - 2.8%(h)
         
   
Lodging - 0.7%
         
2,701,245
 
MGM Resorts International
Ba3
7.00%
2/21/2014
N/A
2,590,494
               
   
Gaming - 0.1%
         
300,000
 
Rock Ohio Caesars 1st Lien
BB-
8.50%
08/11/2017
N/A
292,500
               
   
Oil Field Services - 0.8%
         
2,985,000
 
Southern Pacific Resources 2nd Lien (Canada)
NR
10.75%
12/22/2016
N/A
2,970,075
               
   
Other Industrials - 0.4%
         
966,373
 
NCO Group, Inc.
CCC+
8.00%
5/15/2013
N/A
947,654
500,000
 
Sirva Worldwide, Inc.
B
10.75%
03/17/2017
N/A
490,000
             
1,437,654
   
Retail - 0.1%
         
350,000
 
Targus Group International, Inc.
B2
11.00%
5/25/2016
N/A
337,750
               
   
Technology - 0.7%
         
99,706
 
API Technologies Corp.
BB-
7.75%
06/27/2016
N/A
93,474
1,850,000
 
Flexera Software, Inc.
BB-
7.50%
01/20/2017
N/A
1,757,500
1,000,000
 
Infor Global Solutions 2nd Lien
Caa2
6.47%
3/2/2014
N/A
784,000
             
2,634,974
               
   
Total Term Loans - 2.8%
         
   
(Cost $10,479,184)
       
10,263,447
               
Number
             
of Shares
 
Description
       
Value
   
Preferred Stock - 1.5%
         
   
Transportation - 1.5%
         
200,000
 
Seaspan Corp., Series C(i)
NR
9.50%
   
5,332,000
   
(Cost $5,000,000)
         
               
   
Warrants - 0.0%
         
1,550
 
Alion Science and Technology Corp.(b)
       
   
(Cost $16)
         
               
   
Total Long-Term Investments - 127.7%
         
   
(Cost $437,049,456)
       
 $                473,608,967
               
               
   
Short-Term Investments - 1.4%
         
Principal
             
Amount
 
Description
Rating (S&P)*
Coupon
Maturity
 
Value
   
Municipal Bonds - 1.3%
         
   
Michigan - 1.2%
         
$2,400,000
 
Michigan Finance Authority, State Aid Revenue Notes, School District of the City of
Detroit, Series 2011A-2(i)
SP-1
6.65%
03/20/2012
N/A
                       2,457,336
2,000,000
 
Michigan Finance Authority, State Aid Revenue Notes, School District of the City of
Detroit, Series 2011A-1(i)
SP-1
6.45%
02/20/2012
N/A
2,039,341
             
4,496,677
   
New York - 0.1%
         
250,000
 
City of New York, General Obligation Bonds, Fiscal 2008, Series L, Subseries L-3
through L-6, Adjustable Rate Bonds
A-1
1.65%
04/01/2035
09/02/11 @ 100
 $                       250,000
               
               
   
Total Municipal Bonds - 1.3%
         
   
(Cost $4,650,000)
       
4,746,677
Number
             
of Shares
 
Description
       
Value
   
Money Market - 0.1%
         
432,516
 
Dreyfus Treasury Prime Cash Management Institutional Shares
       
                          432,516
   
(Cost $432,516)
         
               
   
Total Short-Term Investments - 1.4%
         
   
(Cost $5,082,516)
       
 $                    5,179,193
               
   
Total Investments - 129.1%
         
   
(Cost $442,131,972)
       
478,788,160
   
Other Assets in excess of Liabilities - 1.7%
       
6,237,181
   
Reverse Repurchase Agreements - (30.8%)
       
                 (114,060,213)
   
Net Assets  - 100.0%
       
$            370,965,128
 
AGM – Insured by Assured Guaranty Municipal Corporation
 
Assured GTY - Insured by Assured Guaranty Corporation
 
LLC - Limited Liability Company
 
LP - Limited Partnership
 
N/A- Not Applicable
 
PLC - Public Limited Company
 
SAB de CV - Publicly Traded Company
 
 
*
Ratings shown are per Standard & Poor's, Moody's or Fitch.  Securities classified as NR are not rated. (For securities not rated by Standard & Poor's Rating Group, the rating by Moody's Investor Services, Inc. is provided.  Likewise, for securities not rated by Standard & Poor's Rating Group and Moody's Investor Services, Inc., the rating by Fitch Ratings is provided.)  All ratings are unaudited.  The ratings apply to the credit worthiness of the issuers of the underlying securities and not to the Fund or its shares.
**
Date and price of the earliest optional call or put provision. There may be other call provisions at varying prices at later dates.
(a)
Taxable municipal bond issued as part of the Build America Bond program.
(b)
Non-income producing security.
   
(c)
Securities are exempt from registration under Rule 144A of the Securities Act of 1933.  These securities may be resold in transactions exempt from registration, normally to qualified institutional buyers.  At August 31, 2011 these securities amounted to $39,330,085, which represents 10.6% of net assets applicable to common shares.
(d)
Security has a fixed rate coupon which will convert to a floating or variable rate coupon on a future date.
 
(e)
The issuer of this security may elect to pay interest entirely in cash, entirely by issuing payment-in-kind shares, or pay 50% of the interest in cash and 50% of the interest by issuing payment-in-kind shares.
(f)
Floating or variable rate coupon.  The rate shown is as of August 31, 2011.
(g)
Security is a "Step-up" bond where the coupon increases or steps up at a predetermined date.  The rate shown reflects the rate in effect at he end of the reporting period.
(h)
Term loans held by the Fund have a variable interest rate feature which is periodically adjusted based on an underlying interest rate benchmark.  In addition, term loans may include mandatory and/or optional prepayment terms.  As a result, the actual maturity dates of the loan may be different than the amounts disclosed in the portfolios of investments.  Term loans may be considered restricted in that the Fund may be contractually obligated to secure approval from the Agent Bank and/or Borrower prior to the sale or disposition of loan.
(i)
All of a portion of these securities have been physically segregated in connection with unfunded loan commitments and reverse repurchase agreements.  As of August 31, 2011, the total amount segregated was $158,721,024.
   
 
See previously submitted notes to financial statements for the period ended May 31, 2011.
 
 
 

 
 
At August 31, 2011, the Trust had the following unfunded loan commitments which
could be extended at the option of the borrower:
 
 
Borrower
Principal Amount
Unrealized Appreciation
 
MGM Mirage, Inc.
 $             300,000
 $                              2,700
 
Level 3
600,000
                                     -
 
 
 $             900,000
 $                              2,700
 
 
 
 
Country Allocation*
 
 
United States
97.1%
 
 
Marshall Islands
1.1%
 
 
Canada
0.6%
 
 
Ireland
0.4%
 
 
Mexico
0.4%
 
 
United Kingdom
0.3%
 
 
Australia
0.1%
 
 
*Subject to change daily.  Based on long-term investments.
 
 
At August 31, 2011 (unaudited), the cost and related gross unrealized appreciation and depreciation on investments for
tax purposes are as follows:
Cost of Investments for Tax Purposes
 
Gross Tax Unrealized
Appreciation
 
Gross Tax
Unrealized
Depreciation
Net Tax Unrealized
Appreciation on Investments
 $                               442,131,972
 
 $                          38,900,742
 
 $                    (2,244,554)
 $                     36,656,188
 
             
Fair value is defined as the price that the Trust would receive to sell an investment or pay to
transfer a liability in an orderly transaction with an independent buyer in the principal market,
or in the absence of a principal market the most advantageous market for the investment
 
or liability. There are three different categories for valuations. Level 1 valuations are
   
those based upon quoted prices in active markets. Level 2 valuations are those based upon
quoted prices in inactive markets or based upon significant observable inputs (e.g. yield
   
curves; benchmark interest rates; indices). Level 3 valuations are those based upon unobservable
inputs (e.g. discounted cash flow analysis; non-market based methods used to
   
determine fair valuation).
           
             
The Trust adopted the Accounting Standards Update, Fair Value Measurements and
   
Disclosures (Topic 820): Improving Disclosures about Fair Value Measurements which provides
guidance on how investment assets and liabilities are to be valued and disclosed. Specifically,
the amendment requires reporting entities to disclose: i) the input and valuation techniques
used to measure fair value for both recurring and nonrecurring fair value measurements, for
 
Level 2 or Level 3 positions, ii) transfers between all levels (including Level 1 and Level 2) on
a gross basis (i.e. transfers out must be disclosed separately from transfers in) as well as the
reason(s) for the transfer, and iii) purchases, sales, issuances and settlements must be shown
on a gross basis in the Level 3 rollforward rather than as one net number.
   
             
The Trust values Level 1 securities using readily available market quotations in active markets.
The Trust values Level 2 fixed income securities using independent pricing providers
   
who employ matrix pricing models utilizing market prices, broker quotes and prices of securities
with comparable maturities and qualities. The Trust values Level 2 equity securities
   
using various observable market inputs in accordance with procedures established in good
 
faith by management and approved by the Board of Trustees.  The Trust
   
did not have any Level 3 securities during the period ended August 31, 2011.  There were no
transfers between Level 1 and Level 2 during the period ended August 31, 2011.
   
             
The following table represents the Trust's investments carried on the Statement of Assets and
Liabilities by caption and by level within the fair value hierarchy as of August 31, 2011:
   
 
 
Description
 
Level 1
   
Level 2
   
Level 3
   
Total
 
(value in $000s)
                       
Assets:
                       
Municipal Bonds
  $ -     $ 399,560     $ -     $ 399,560  
Corporate Bonds
    -       32,664       -       32,664  
Asset Backed Securities
    -       28,592       -       28,592  
Collateralized Mortgage Obligations
    -       1,944       -       1,944  
Preferred Stock
    5,332       -       -       5,332  
Term Loans
    -       10,263       -       10,263  
Warrants
    -       - *     -       -  
Money Market Fund
    433       -       -       433  
Unfunded Commitments
    -       3       -       3  
Total
  $ 5,765     $ 473,026     $ -     $ 478,791  
                                 
*Amount rounds to less than $1.
                               
 
 
 
 

 
 
Item 2.    Controls and Procedures.

 
(a)
The registrant’s principal executive officer and principal financial officer have evaluated the registrant’s disclosure controls and procedures (as defined in Rule 30a-3(c) under the Investment Company Act of 1940, as amended) as of a date within 90 days of the filing date of this report and have concluded, based on such evaluation, that the registrant’s disclosure controls and procedures were effective, as of that date, in ensuring that information required to be disclosed by the registrant on this Form N-Q was recorded, processed, summarized and reported within the time periods specified in the Securities and Exchange Commission’s rules and forms.

 
(b)
There was no change in the registrant’s internal control over financial reporting (as defined in Rule 30a-3(d) under the Investment Company Act, as amended) that occurred during the registrant’s last fiscal quarter that has materially affected or is reasonably likely to materially affect the registrant’s internal control over financial reporting.

Item 3.    Exhibits.

A separate certification for each principal executive officer and principal financial officer of the registrant as required by Rule 30a-2(a) under the Investment Company Act, as amended (17 CFR 270.30a-2(a)) is attached hereto.
 
 
 

 
 
 
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.

Guggenheim Build America Bonds Managed Duration Trust

By:          /s/ Kevin M. Robinson               
Kevin M. Robinson
Chief Executive Officer and Chief Legal Officer

Date:       October 26, 2011


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:          /s/ Kevin M. Robinson                
Kevin M. Robinson
Chief Executive Officer and Chief Legal Officer

Date:      October 26, 2011

 
By:       /s/ John Sullivan                               
John Sullivan
Chief Financial Officer, Chief Accounting Officer and Treasurer
 
Date:    October 26, 2011