N-Q 1 a_limdurgovinc.htm PUTNAM LIMITED DURATION GOVERNMENT INCOME FUND a_limdurgovinc.htm

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

FORM N-Q

QUARTERLY SCHEDULE OF PORTFOLIO HOLDINGS OF REGISTERED MANAGEMENT
INVESTMENT COMPANY

Investment Company Act file number: (811- 06257 )

Exact name of registrant as specified in charter: Putnam Limited Duration Government Income Fund

Address of principal executive offices: One Post Office Square, Boston, Massachusetts 02109

Name and address of agent for service:  Beth S. Mazor, Vice President 
  One Post Office Square 
  Boston, Massachusetts 02109 
 
Copy to:  John W. Gerstmayr, Esq. 
  Ropes & Gray LLP 
  One International Place 
  Boston, Massachusetts 02110 
 
Registrant’s telephone number, including area code:  (617) 292-1000   

Date of fiscal year end: November 30, 2007

Date of reporting period: August 31, 2007

Item 1. Schedule of Investments:


Putnam Limited Duration Government Income Fund
The fund's portfolio
8/31/07 (Unaudited)

U.S. GOVERNMENT AND AGENCY MORTGAGE OBLIGATIONS (52.6%)(a)     

 
  Principal amount  Value 

U.S. Government Guaranteed Mortgage Obligations (12.1%)     
Government National Mortgage Association Pass-Through     
Certificates     
5 3/4s, July 20, 2026  $50,133  $50,378 
7 1/2s, October 20, 2030  39,411  41,058 
6 1/2s, with due dates from December 20, 2035 to     
August 20, 2037  25,155,322  25,645,666 
6 1/2s, TBA, September 1, 2037  23,200,000  23,642,250 
    49,379,352 

 
U.S. Government Agency Mortgage Obligations (40.5%)     
Federal Home Loan Mortgage Corporation Pass-Through     
Certificates     
7 1/2s, with due dates from April 1, 2016 to     
December 1, 2017  11,442  12,112 
6s, August 1, 2021  65,733  66,398 
5 1/2s, October 1, 2018  577,729  583,123 
Federal National Mortgage Association Pass-Through     
Certificates     
7 1/2s, with due dates from October 1, 2022 to     
November 1, 2030  156,382  166,119 
7s, with due dates from December 1, 2031 to     
December 1, 2035  3,456,511  3,568,287 
7s, with due dates from January 1, 2008 to     
January 1, 2015  287,404  297,087 
6 1/2s, August 1, 2034  28,952  29,485 
6 1/2s, with due dates from February 1, 2014 to     
February 1, 2017  867,657  883,046 
6 1/2s, TBA, September 1, 2037  62,800,000  63,742,000 
6s, July 1, 2037  27,428  27,397 
6s, with due dates from July 1, 2016 to January 1, 2022  5,509,466  5,568,119 
6s, TBA, September 1, 2037  25,900,000  25,865,602 
5 1/2s, with due dates from April 1, 2034 to     
August 1, 2037  29,448,752  28,770,950 
5 1/2s, with due dates from January 1, 2009 to     
February 1, 2021  1,770,019  1,767,126 
5 1/2s, TBA, September 1, 2037  21,373,000  20,865,391 
5 1/2s, TBA, September 1, 2021  900,000  894,586 
5s, with due dates from November 1, 2035 to     
July 1, 2037  2,256,025  2,143,906 
5s, May 1, 2021  53,187  51,955 
5s, TBA, September 1, 2037  1,532,000  1,455,041 
4 1/2s, with due dates from October 1, 2020 to     
October 1, 2035  5,239,615  4,999,213 
4 1/2s, with due dates from July 1, 2020 to     
September 1, 2020  2,128,006  2,046,129 
4 1/2s, TBA, September 1, 2022  2,400,000  2,302,125 
    166,105,197 

Total U.S. government and agency mortgage obligations (cost $215,457,254)    $215,484,549 

 
U.S. GOVERNMENT AGENCY OBLIGATIONS (10.1%)(a)     

 
  Principal amount  Value 

Fannie Mae 4 1/4s, August 15, 2010  $9,600,000  $9,479,916 
Freddie Mac     
6 7/8s, September 15, 2010  6,752,000  7,161,470 
6 5/8s, September 15, 2009  23,980,000  24,862,265 

 
Total U.S. government agency obligations (cost $42,061,136)    $41,503,651 

 
U.S. TREASURY OBLIGATIONS (19.3%)(a)     

 
  Principal amount  Value 

U.S. Treasury Notes     
4 1/4s, August 15, 2014  $1,300,000  $1,290,453 
4 1/4s, August 15, 2013  53,596,000  53,436,884 
4s, February 15, 2014  25,000,000  24,525,390 

 
Total U.S. treasury obligations (cost $79,337,716)    $79,252,727 

 
COLLATERALIZED MORTGAGE OBLIGATIONS (43.0%)(a)     

 
  Principal amount  Value 

Banc of America Commercial Mortgage, Inc.     
Ser. 06-4, Class A4, 5.634s, 2046  $660,000  $658,679 
Ser. 06-5, Class A4, 5.414s, 2047  816,000  800,769 
FRB Ser. 05-1, Class A5, 5.119s, 2042  207,000  202,705 
Ser. 04-4, Class A6, 4.877s, 2042  34,000  32,891 
Commercial Mortgage Pass-Through Certificates     
Ser. 06-C7, Class A4, 5.962s, 2046  6,752,000  6,874,643 
FRB Ser. 04-LB3A, Class A5, 5.443s, 2037  20,000  19,850 
Countrywide Alternative Loan Trust IFB Ser. 06-6CB,     
Class 1A3, Interest Only (IO), zero %, 2036  4,489,760  20,169 
Credit Suisse Mortgage Capital Certificates FRB Ser.     
07-C4, Class A2, 5.811s, 2039 (FWC)  55,000  55,577 


   
CS First Boston Mortgage Securities Corp.     
FRB Ser. 04-C3, Class A5, 5.113s, 2036  76,000  74,086 
FRB Ser. 05-C5, Class A4, 5.1s, 2038  64,000  61,840 
Ser. 04-C3, Class A3, 4.302s, 2036  161,000  156,942 
Fannie Mae     
Ser. 03-W6, Class PT1, 10.071s, 2042  1,439,964  1,548,930 
IFB Ser. 07-75, Class JS, 8.32s, 2037  593,041  697,341 
IFB Ser. 06-70, Class SM, 8.033s, 2036  114,245  130,927 
Ser. 04-T3, Class 1A4, 7 1/2s, 2044  1,135,848  1,198,247 
Ser. 04-T2, Class 1A4, 7 1/2s, 2043  264,942  279,497 
Ser. 02-T19, Class A3, 7 1/2s, 2042  852,290  893,733 
Ser. 02-14, Class A2, 7 1/2s, 2042  195,773  204,703 
Ser. 01-T10, Class A2, 7 1/2s, 2041  1,146,487  1,194,803 
Ser. 02-T4, Class A3, 7 1/2s, 2041  784,720  818,206 
Ser. 01-T12, Class A2, 7 1/2s, 2041  1,953,505  2,033,290 
Ser. 01-T3, Class A1, 7 1/2s, 2040  7,817  8,153 
Ser. 99-T2, Class A1, 7 1/2s, 2039  111,642  117,860 
Ser. 03-W10, Class 1A1, 7 1/2s, 2032  949,225  992,312 
Ser. 02-T1, Class A3, 7 1/2s, 2031  1,526,412  1,595,631 
Ser. 00-T6, Class A1, 7 1/2s, 2030  676,489  706,478 
Ser. 01-T5, Class A3, 7 1/2s, 2030  8,086  8,430 
Ser. 02-26, Class A1, 7s, 2048  900,718  932,882 
Ser. 04-W12, Class 1A3, 7s, 2044  589,234  614,668 
Ser. 04-T3, Class 1A3, 7s, 2044  1,069,415  1,114,613 
Ser. 04-T2, Class 1A3, 7s, 2043  359,897  375,175 
Ser. 03-W8, Class 2A, 7s, 2042  3,557,063  3,696,787 
Ser. 03-W3, Class 1A2, 7s, 2042  340,480  352,883 
Ser. 02-T16, Class A2, 7s, 2042  2,354,526  2,439,760 
Ser. 02-T19, Class A2, 7s, 2042  1,463,396  1,517,803 
Ser. 01-T10, Class A1, 7s, 2041  651,032  671,843 
Ser. 02-T4, Class A2, 7s, 2041  1,547,948  1,598,318 
Ser. 04-W1, Class 2A2, 7s, 2033  2,414,240  2,514,501 
IFB Ser. 06-49, Class SE, 6.98s, 2036  626,955  676,818 
IFB Ser. 07-75, Class CS, 6.965s, 2037  347,495  406,122 
IFB Ser. 06-62, Class PS, 6.87s, 2036  573,863  649,968 
IFB Ser. 06-60, Class AK, 6.78s, 2036  254,683  273,929 
IFB Ser. 06-60, Class TK, 6.58s, 2036  249,112  265,838 
IFB Ser. 06-76, Class QB, 6.57s, 2036  831,456  938,697 
IFB Ser. 06-79, Class PS, 6.57s, 2036  155,037  177,777 
Ser. 381, Class 14, IO, 6 1/2s, 2037  342,111  88,575 
Ser. 381, Class 15, IO, 6 1/2s, 2037  145,330  37,990 
Ser. 371, Class 2, IO, 6 1/2s, 2036  2,228,181  610,489 
IFB Ser. 06-63, Class SP, 6.27s, 2036  904,337  1,006,366 
IFB Ser. 07-W7, Class 1A4, 6.15s, 2037  374,768  389,646 
IFB Ser. 06-104, Class GS, 6.088s, 2036  319,909  347,264 
IFB Ser. 06-104, Class ES, 5.925s, 2036  347,618  377,083 
FRB Ser. 07-95, Class A1, 5.755s, 2037  11,017,000  11,013,695 
FRB Ser. 07-95, Class A2, 5.755s, 2037  24,404,000  24,216,089 
FRB Ser. 07-95, Class A3, 5.755s, 2037  6,762,000  6,476,576 
IFB Ser. 07-1, Class NK, 5.473s, 2037  799,011  871,432 
IFB Ser. 06-104, Class CS, 4.928s, 2036  421,750  427,106 
IFB Ser. 05-74, Class CS, 4.881s, 2035  1,042,277  1,054,528 
IFB Ser. 07-81, Class SC, 4.77s, 2037  293,790  300,612 
IFB Ser. 05-74, Class CP, 4.565s, 2035  914,154  941,259 
IFB Ser. 06-115, Class ES, 4.54s, 2036  322,000  336,931 
IFB Ser. 05-114, Class SP, 4.441s, 2036  313,993  303,981 
IFB Ser. 06-27, Class SP, 4.382s, 2036  651,000  671,242 
IFB Ser. 06-8, Class HP, 4.382s, 2036  735,542  750,438 
IFB Ser. 06-8, Class WK, 4.382s, 2036  1,157,164  1,171,905 
IFB Ser. 05-106, Class US, 4.382s, 2035  1,102,129  1,132,823 
IFB Ser. 05-99, Class SA, 4.382s, 2035  543,350  549,952 
IFB Ser. 07-30, Class FS, 4.331s, 2037  779,875  781,113 
IFB Ser. 05-115, Class NQ, 4.294s, 2036  258,404  255,644 
IFB Ser. 05-74, Class DM, 4.198s, 2035  1,056,966  1,068,141 
IFB Ser. 06-60, Class CS, 3.905s, 2036  405,490  385,253 
IFB Ser. 05-95, Class CP, 3.541s, 2035  84,221  83,666 
IFB Ser. 05-72, Class SB, 3.113s, 2035  360,444  343,333 
IFB Ser. 05-83, Class QP, 3.081s, 2034  369,076  345,009 
IFB Ser. 05-106, Class JC, 3.054s, 2035  482,206  442,839 
IFB Ser. 05-57, Class MN, 2.826s, 2035  742,221  721,814 
IFB Ser. 07-W6, Class 6A2, IO, 2.295s, 2037  562,185  41,192 
IFB Ser. 06-90, Class SE, IO, 2.295s, 2036  385,500  41,944 
IFB Ser. 03-66, Class SA, IO, 2.145s, 2033  902,889  72,261 
IFB Ser. 07-W6, Class 5A2, IO, 1.785s, 2037  740,279  51,315 
IFB Ser. 07-W4, Class 4A2, IO, 1.775s, 2037  2,615,716  170,405 
IFB Ser. 07-W2, Class 3A2, IO, 1.775s, 2037  994,952  64,849 
IFB Ser. 05-113, Class AI, IO, 1.725s, 2036  124,439  10,235 
IFB Ser. 05-113, Class DI, IO, 1.725s, 2036  6,006,183  419,062 
IFB Ser. 06-60, Class SI, IO, 1.645s, 2036  957,523  77,948 
IFB Ser. 06-60, Class DI, IO, 1.565s, 2035  367,428  23,322 
IFB Ser. 05-65, Class KI, IO, 1.495s, 2035  8,993,377  565,896 
IFB Ser. 07-54, Class CI, IO, 1.255s, 2037  624,815  43,969 
IFB Ser. 07-39, Class PI, IO, 1.255s, 2037  617,676  38,557 
IFB Ser. 07-30, Class WI, IO, 1.255s, 2037  3,565,987  209,771 
IFB Ser. 07-W4, Class 3A2, IO, 1.245s, 2037  2,534,073  138,267 
IFB Ser. 07-28, Class SE, IO, 1.245s, 2037  646,763  44,530 
IFB Ser. 07-W2, Class 2A2, IO, 1.245s, 2037  1,346,691  77,589 
IFB Ser. 06-128, Class SH, IO, 1.245s, 2037  789,348  44,584 
IFB Ser. 06-56, Class SM, IO, 1.245s, 2036  851,892  52,416 
IFB Ser. 06-12, Class SD, IO, 1.245s, 2035  3,450,008  244,195 
IFB Ser. 05-90, Class SP, IO, 1.245s, 2035  1,723,283  103,397 
IFB Ser. 07-W5, Class 2A2, IO, 1.235s, 2037  356,589  14,513 
IFB Ser. 07-30, Class IE, IO, 1.235s, 2037  1,745,125  139,028 
IFB Ser. 06-123, Class CI, IO, 1.235s, 2037  1,491,989  101,655 
IFB Ser. 06-123, Class UI, IO, 1.235s, 2037  649,660  42,683 
IFB Ser. 05-82, Class SY, IO, 1.225s, 2035  4,227,657  237,769 
IFB Ser. 07-15, Class BI, IO, 1.195s, 2037  1,097,225  70,879 


   
IFB Ser. 06-23, Class SC, IO, 1.195s, 2036  888,630  59,880 
IFB Ser. 06-16, Class SM, IO, 1.195s, 2036  579,486  38,791 
IFB Ser. 05-95, Class CI, IO, 1.195s, 2035  1,162,006  79,649 
IFB Ser. 05-84, Class SG, IO, 1.195s, 2035  1,937,974  135,101 
IFB Ser. 05-104, Class NI, IO, 1.195s, 2035  1,344,187  88,003 
IFB Ser. 05-104, Class SI, IO, 1.195s, 2033  1,200,715  69,228 
IFB Ser. 05-83, Class QI, IO, 1.185s, 2035  310,122  23,539 
IFB Ser. 06-128, Class GS, IO, 1.175s, 2037  719,526  49,341 
IFB Ser. 05-83, Class SL, IO, 1.165s, 2035  3,411,111  206,868 
IFB Ser. 07-63, Class SB, IO, 1.145s, 2037  4,291,423  222,618 
IFB Ser. 06-114, Class IS, IO, 1.145s, 2036  772,156  46,559 
IFB Ser. 06-115, Class IE, IO, 1.135s, 2036  564,213  38,299 
IFB Ser. 06-117, Class SA, IO, 1.135s, 2036  860,343  50,840 
IFB Ser. 06-121, Class SD, IO, 1.135s, 2036  642,138  44,206 
IFB Ser. 06-109, Class SG, IO, 1 1/8s, 2036  498,699  30,226 
IFB Ser. 06-104, Class SY, IO, 1.115s, 2036  194,997  10,995 
IFB Ser. 06-109, Class SH, IO, 1.115s, 2036  722,081  53,150 
IFB Ser. 07-W6, Class 4A2, IO, 1.095s, 2037  2,853,828  148,468 
IFB Ser. 06-128, Class SC, IO, 1.095s, 2037  1,502,915  86,840 
IFB Ser. 06-44, Class IS, IO, 1.095s, 2036  839,914  49,247 
IFB Ser. 06-45, Class SM, IO, 1.095s, 2036  1,477,067  76,161 
IFB Ser. 06-8, Class JH, IO, 1.095s, 2036  2,676,605  180,840 
IFB Ser. 05-122, Class SG, IO, 1.095s, 2035  583,043  37,748 
IFB Ser. 05-95, Class OI, IO, 1.085s, 2035  172,653  13,503 
IFB Ser. 06-92, Class JI, IO, 1.075s, 2036  299,222  18,151 
IFB Ser. 06-92, Class LI, IO, 1.075s, 2036  840,511  50,263 
IFB Ser. 06-96, Class ES, IO, 1.075s, 2036  415,595  24,666 
IFB Ser. 06-99, Class AS, IO, 1.075s, 2036  270,785  15,955 
IFB Ser. 06-85, Class TS, IO, 1.055s, 2036  1,596,328  88,846 
IFB Ser. 06-61, Class SE, IO, 1.045s, 2036  1,130,069  63,669 
IFB Ser. 07-76, Class SA, IO, 1.035s, 2037  933,825  49,446 
IFB Ser. 07-W7, Class 2A2, IO, 1.025s, 2037  2,224,453  118,252 
IFB Ser. 03-124, Class ST, IO, 0.995s, 2034  614,258  30,598 
IFB Ser. 07-30, Class JS, IO, 0.935s, 2037  1,521,119  86,155 
IFB Ser. 07-30, Class LI, IO, 0.935s, 2037  1,028,926  61,262 
IFB Ser. 07-W2, Class 1A2, IO, 0.925s, 2037  3,620,521  187,997 
IFB Ser. 07-W4, Class 2A2, IO, 0.915s, 2037  2,913,464  134,019 
IFB Ser. 07-54, Class IA, IO, 0.905s, 2037  805,355  47,162 
IFB Ser. 07-54, Class IB, IO, 0.905s, 2037  805,355  47,162 
IFB Ser. 07-54, Class IC, IO, 0.905s, 2037  805,355  47,162 
IFB Ser. 07-54, Class ID, IO, 0.905s, 2037  805,355  47,162 
IFB Ser. 07-54, Class IE, IO, 0.905s, 2037  805,355  47,162 
IFB Ser. 07-54, Class IF, IO, 0.905s, 2037  1,198,259  70,170 
IFB Ser. 07-54, Class UI, IO, 0.905s, 2037  926,565  57,944 
IFB Ser. 07-15, Class CI, IO, 0 7/8s, 2037  2,731,813  156,015 
IFB Ser. 06-123, Class BI, IO, 0 7/8s, 2037  3,618,074  200,448 
IFB Ser. 06-115, Class JI, IO, 0 7/8s, 2036  1,996,853  114,158 
IFB Ser. 06-123, Class LI, IO, 0.815s, 2037  1,342,790  71,852 
IFB Ser. 07-39, Class AI, IO, 0.615s, 2037  1,438,014  68,863 
IFB Ser. 07-32, Class SD, IO, 0.605s, 2037  959,173  46,627 
IFB Ser. 07-30, Class UI, IO, 0.595s, 2037  791,101  38,733 
IFB Ser. 07-32, Class SC, IO, 0.595s, 2037  1,275,363  61,107 
IFB Ser. 07-1, Class CI, IO, 0.595s, 2037  930,319  43,964 
IFB Ser. 05-74, Class SE, IO, 0.595s, 2035  4,829,401  192,244 
IFB Ser. 05-82, Class SI, IO, 0.595s, 2035  4,033,509  148,932 
IFB Ser. 07-W4, Class 1A2, IO, 0.585s, 2037  11,036,319  445,863 
IFB Ser. 07-W5, Class 1A2, IO, 0.575s, 2037  1,790,196  55,317 
IFB Ser. 05-74, Class NI, IO, 0.575s, 2035  5,120,568  251,049 
IFB Ser. 07-75, Class ID, IO, 0.365s, 2037  763,693  33,611 
FRB Ser. 06-115, Class SN, zero %, 2036  385,504  410,462 
FRB Ser. 06-104, Class EK, zero %, 2036  149,686  148,487 
Ser. 372, Class 1, Principal Only (PO), zero %, 2036  6,186,073  4,599,797 
Ser. 06-56, Class XF, zero %, 2036  80,709  82,525 
Ser. 04-38, Class AO, PO, zero %, 2034  2,047,961  1,476,824 
Ser. 04-61, Class CO, PO, zero %, 2031  440,000  350,974 
Ser. 07-31, Class TS, IO, zero %, 2009  2,291,297  20,371 
Ser. 07-15, Class IM, IO, zero %, 2009  892,564  10,241 
Ser. 07-16, Class TS, IO, zero %, 2009 (NON)  3,678,561  31,034 
FRB Ser. 05-79, Class FE, zero %, 2035  230,129  243,617 
FRB Ser. 05-45, Class FG, zero %, 2035  261,100  246,941 
FRB Ser. 05-81, Class DF, zero %, 2033  85,121  88,473 
FRB Ser. 06-1, Class HF, zero %, 2032  122,388  119,624 
IFB Ser. 06-75, Class FY, zero %, 2036  181,695  191,730 
Federal Home Loan Mortgage Corp. Structured     
Pass-Through Securities     
Ser. T-58, Class 4A, 7 1/2s, 2043  530,771  557,797 
Ser. T-42, Class A5, 7 1/2s, 2042  281,108  289,513 
Ser. T-60, Class 1A2, 7s, 2044  674,656  703,254 
Ser. T-59, Class 1A2, 7s, 2043  1,388,057  1,450,306 
Ser. T-55, Class 1A2, 7s, 2043  831,284  859,303 
Freddie Mac     
IFB Ser. 3339, Class JS, 6.362s, 2037  311,053  344,886 
IFB Ser. 3339, Class WS, 6.081s, 2037  335,950  390,451 
IFB Ser. 3202, Class PS, 5.572s, 2036  583,810  642,551 
IFB Ser. 3349, Class SA, 5.333s, 2037  1,205,030  1,295,880 
IFB Ser. 3331, Class SE, 5.333s, 2037  305,238  322,555 
IFB Ser. 3153, Class SX, 5.194s, 2036  850,579  914,376 
IFB Ser. 3149, Class SU, 4.232s, 2036  272,628  260,743 
IFB Ser. 3114, Class GK, 3.955s, 2036  287,288  290,180 
IFB Ser. 3081, Class DC, 3.909s, 2035  433,069  438,154 
IFB Ser. 2979, Class AS, 3.699s, 2034  195,975  194,856 
IFB Ser. 3153, Class UT, 3.442s, 2036  499,132  481,077 
IFB Ser. 3065, Class DC, 3.026s, 2035  684,289  640,078 
IFB Ser. 3031, Class BS, 2.697s, 2035  933,591  867,184 
IFB Ser. 3360, Class SC, 2.281s, 2037  410,000  367,271 
IFB Ser. 3184, Class SP, IO, 1.739s, 2033  986,227  73,079 
IFB Ser. 3012, Class GP, 1.614s, 2035  464,760  447,801 


   
IFB Ser. 3203, Class SH, IO, 1.529s, 2036  564,337  48,014 
IFB Ser. 2594, Class SE, IO, 1.439s, 2030  1,168,151  60,598 
IFB Ser. 2828, Class TI, IO, 1.439s, 2030  620,083  40,697 
IFB Ser. 3297, Class BI, IO, 1.149s, 2037  2,375,073  164,501 
IFB Ser. 3284, Class IV, IO, 1.139s, 2037  610,783  45,251 
IFB Ser. 3287, Class SD, IO, 1.139s, 2037  956,563  61,803 
IFB Ser. 3281, Class BI, IO, 1.139s, 2037  465,794  30,539 
IFB Ser. 3028, Class ES, IO, 1.139s, 2035  3,224,644  222,462 
IFB Ser. 3042, Class SP, IO, 1.139s, 2035  727,746  47,872 
IFB Ser. 3045, Class DI, IO, 1.119s, 2035  9,557,596  542,610 
IFB Ser. 3136, Class NS, IO, 1.089s, 2036  1,273,433  76,057 
IFB Ser. 3054, Class CS, IO, 1.089s, 2035  683,450  34,313 
IFB Ser. 3107, Class DC, IO, 1.089s, 2035  1,675,872  119,944 
IFB Ser. 3066, Class SI, IO, 1.089s, 2035  4,435,021  307,575 
IFB Ser. 2950, Class SM, IO, 1.089s, 2016  358,829  21,074 
IFB Ser. 3256, Class S, IO, 1.079s, 2036  1,097,212  75,660 
IFB Ser. 3031, Class BI, IO, 1.079s, 2035  627,892  47,360 
IFB Ser. 3244, Class SB, IO, 1.049s, 2036  666,378  41,961 
IFB Ser. 3244, Class SG, IO, 1.049s, 2036  766,543  49,590 
IFB Ser. 3326, Class GS, IO, 1.039s, 2037  1,835,914  96,385 
IFB Ser. 3236, Class IS, IO, 1.039s, 2036  1,247,438  75,669 
IFB Ser. 3147, Class SH, IO, 1.039s, 2036  2,305,073  159,009 
IFB Ser. 3114, Class TS, IO, 1.039s, 2030  4,257,623  223,556 
IFB Ser. 3128, Class JI, IO, 1.019s, 2036  1,266,652  83,391 
IFB Ser. 3240, Class S, IO, 1.009s, 2036  2,323,854  146,604 
IFB Ser. 3065, Class DI, IO, 1.009s, 2035  480,583  35,956 
IFB Ser. 3145, Class GI, IO, 0.989s, 2036  1,029,331  71,481 
IFB Ser. 3114, Class GI, IO, 0.989s, 2036  686,479  51,802 
IFB Ser. 3218, Class AS, IO, 0.969s, 2036  849,512  50,720 
IFB Ser. 3221, Class SI, IO, 0.969s, 2036  1,015,848  59,493 
IFB Ser. 3202, Class PI, IO, 0.929s, 2036  2,762,374  162,264 
IFB Ser. 3201, Class SG, IO, 0.889s, 2036  1,281,883  74,476 
IFB Ser. 3203, Class SE, IO, 0.889s, 2036  1,142,642  65,482 
IFB Ser. 3152, Class SY, IO, 0.869s, 2036  1,080,904  69,860 
IFB Ser. 3284, Class BI, IO, 0.839s, 2037  754,530  41,090 
IFB Ser. 3199, Class S, IO, 0.839s, 2036  442,620  25,753 
IFB Ser. 3284, Class LI, IO, 0.829s, 2037  1,470,376  85,924 
IFB Ser. 3281, Class AI, IO, 0.819s, 2037  2,756,544  161,383 
IFB Ser. 3012, Class UI, IO, 0.809s, 2035  1,148,493  62,865 
IFB Ser. 3311, Class IA, IO, 0.799s, 2037  1,132,074  68,659 
IFB Ser. 3311, Class IB, IO, 0.799s, 2037  1,132,074  68,659 
IFB Ser. 3311, Class IC, IO, 0.799s, 2037  1,132,074  68,659 
IFB Ser. 3311, Class ID, IO, 0.799s, 2037  1,132,074  68,659 
IFB Ser. 3311, Class IE, IO, 0.799s, 2037  1,622,869  98,425 
IFB Ser. 3240, Class GS, IO, 0.769s, 2036  1,407,359  79,625 
IFB Ser. 3339, Class TI, IO, 0.529s, 2037  1,206,638  61,075 
IFB Ser. 3288, Class SJ, IO, 0.519s, 2037  1,265,473  57,007 
IFB Ser. 3284, Class CI, IO, 0.509s, 2037  2,056,528  99,825 
IFB Ser. 3291, Class SA, IO, 0.499s, 2037  598,218  24,060 
IFB Ser. 3016, Class SQ, IO, 0.499s, 2035  1,345,656  49,445 
IFB Ser. 3284, Class WI, IO, 0.489s, 2037  3,423,165  160,788 
IFB Ser. 3286, Class SA, IO, 0.489s, 2037  1,501,469  60,574 
IFB Ser. 3012, Class IG, IO, 0.469s, 2035  4,193,771  198,925 
IFB Ser. 3235, Class SA, IO, 0.339s, 2036  593,112  21,898 
Ser. 246, PO, zero %, 2037  5,252,094  3,913,119 
FRB Ser. 3326, Class XF, zero %, 2037  424,701  415,370 
Ser. 3300, PO, zero %, 2037  541,853  402,991 
FRB Ser. 3326, Class YF, zero %, 2037  421,828  455,970 
Ser. 242, PO, zero %, 2036  6,116,163  4,564,543 
FRB Ser. 3326, Class WF, zero %, 2035  971,872  932,287 
FRB Ser. 3327, Class YF, zero %, 2037  423,518  427,488 
FRB Ser. 3263, Class TA, zero %, 2037  122,152  143,559 
FRB Ser. 3239, Class BF, zero %, 2036  493,655  570,548 
FRB Ser. 3231, Class XB, zero %, 2036  332,662  340,003 
FRB Ser. 3174, Class SF, zero %, 2036  179,668  187,526 
FRB Ser. 3149, Class XF, zero %, 2036  157,205  159,563 
FRB Ser. 3231, Class X, zero %, 2036  160,558  177,166 
FRB Ser. 3122, Class GF, zero %, 2036  284,166  285,765 
FRB Ser. 3030, Class CF, zero %, 2035  295,633  281,805 
Government National Mortgage Association     
IFB Ser. 07-26, Class WS, 7.95s, 2037  608,538  802,944 
IFB Ser. 07-51, Class SP, 7.56s, 2037  223,000  228,018 
IFB Ser. 07-44, Class SP, 7.526s, 2036  285,533  324,080 
IFB Ser. 07-38, Class AS, 6.97s, 2037  789,134  925,486 
IFB Ser. 05-84, Class SB, 3.156s, 2035  345,995  321,246 
IFB Ser. 05-68, Class DP, 2.967s, 2035  2,566,992  2,429,881 
IFB Ser. 05-7, Class NP, 2.403s, 2033  242,556  230,557 
IFB Ser. 05-84, Class SL, 2.204s, 2035  1,785,185  1,646,340 
IFB Ser. 05-66, Class SP, 2.204s, 2035  824,049  757,033 
IFB Ser. 06-62, Class SI, IO, 1.843s, 2036  996,444  74,773 
IFB Ser. 07-1, Class SL, IO, 1.823s, 2037  447,241  35,089 
IFB Ser. 07-1, Class SM, IO, 1.813s, 2037  447,241  34,947 
IFB Ser. 07-48, Class SB, IO, 1.33s, 2037  1,307,000  69,596 
IFB Ser. 07-26, Class SG, IO, 1.313s, 2037  1,259,995  87,401 
IFB Ser. 07-9, Class BI, IO, 1.283s, 2037  3,101,034  191,299 
IFB Ser. 07-25, Class SA, IO, 1.263s, 2037  1,079,956  55,953 
IFB Ser. 07-25, Class SB, IO, 1.263s, 2037  2,119,732  111,706 
IFB Ser. 07-26, Class LS, IO, 1.263s, 2037  2,618,339  177,770 
IFB Ser. 07-26, Class SA, IO, 1.263s, 2037  3,028,533  177,077 
IFB Ser. 07-22, Class S, IO, 1.263s, 2037  672,901  50,224 
IFB Ser. 07-11, Class SA, IO, 1.263s, 2037  696,183  46,852 
IFB Ser. 06-69, Class SA, IO, 1.263s, 2036  688,327  41,608 
IFB Ser. 07-51, Class SG, IO, 1.26s, 2037  1,562,000  71,754 
IFB Ser. 07-26, Class SD, IO, 1.211s, 2037  1,513,518  98,142 
IFB Ser. 07-26, Class SL, IO, 1.211s, 2037  143,673  8,228 
IFB Ser. 07-26, Class SM, IO, 1.211s, 2037  757,573  43,560 
IFB Ser. 06-38, Class SG, IO, 1.113s, 2033  3,028,949  144,883 


     
IFB Ser. 07-9, Class DI, IO, 0.973s, 2037    1,569,320  82,557 
IFB Ser. 07-9, Class AI, IO, 0.911s, 2037    1,153,462  67,503 
IFB Ser. 05-65, Class SI, IO, 0.813s, 2035    5,613,270  285,214 
IFB Ser. 05-68, Class KI, IO, 0.763s, 2035    18,442,368  1,118,322 
IFB Ser. 07-27, Class SD, IO, 0.663s, 2037    757,951  32,219 
IFB Ser. 07-19, Class SJ, IO, 0.663s, 2037    1,305,955  53,667 
IFB Ser. 07-23, Class ST, IO, 0.663s, 2037    1,547,721  59,775 
IFB Ser. 07-8, Class SA, IO, 0.663s, 2037    1,469,393  67,041 
IFB Ser. 07-9, Class CI, IO, 0.663s, 2037    2,043,520  86,648 
IFB Ser. 07-7, Class EI, IO, 0.663s, 2037    750,174  34,339 
IFB Ser. 07-1, Class S, IO, 0.663s, 2037    1,703,154  70,521 
IFB Ser. 07-3, Class SA, IO, 0.663s, 2037    1,622,869  66,436 
IFB Ser. 07-21, Class S, IO, 0.611s, 2037    1,598,287  73,421 
IFB Ser. 07-43, Class SC, IO, 0.511s, 2037    1,069,479  47,457 
FRB Ser. 07-35, Class UF, zero %, 2037    175,728  186,841 
Greenwich Capital Commercial Funding Corp.       
Ser. 07-GG9, Class A4, 5.444s, 2039    480,000  459,825 
FRB Ser. 05-GG5, Class A5, 5.224s, 2037    64,000  62,353 
GS Mortgage Securities Corp. II       
FRB Ser. 07-GG10, Class AM, 5.993s, 2045    46,000  45,801 
Ser. 06-GG8, Class A4, 5.56s, 2039    832,000  824,737 
Ser. 04-GG2, Class A6, 5.396s, 2038    38,000  37,663 
Ser. 05-GG4, Class A4, 4.761s, 2039    162,000  153,081 
GSR Mortgage Loan Trust Ser. 05-AR2, Class 2A1,       
4.841s, 2035    1,635,640  1,608,358 
JPMorgan FRB Ser. 07-CB19, Class AM, 5.937s, 2049    32,000  32,070 
JPMorgan Chase Commercial Mortgage Securities Corp.       
FRB Ser. 07-LD12, Class AM, 6.261s, 2051    178,000  180,691 
FRB Ser. 07-LD12, Class A3, 6.189s, 2051    279,000  282,356 
FRB Ser. 07-LD11, Class AM, 6.007s, 2049    52,000  52,203 
Ser. 06-CB14, Class AM, 5.629s, 2044    1,499,000  1,459,486 
Ser. 06-CB16, Class A4, 5.552s, 2045    895,000  881,575 
FRB Ser. 04-PNC1, Class A4, 5.542s, 2041    61,000  60,653 
FRB Ser. 07-LDPX, Class AM, 5.464s, 2049    53,000  50,855 
Ser. 07-LDPX, Class A3, 5.42s, 2049    3,087,000  3,000,194 
Ser. 05-CB12, Class A4, 4.895s, 2037    163,000  155,359 
Ser. 04-C3, Class A5, 4.878s, 2042    155,000  148,222 
LB-UBS Commercial Mortgage Trust       
Ser. 01-C3, Class A2, 6.365s, 2028    55,000  56,798 
Ser. 07-C6, Class AM, 6.114s, 2017    91,000  91,446 
Ser. 07-C6, Class A2, 5.845s, 2012    87,000  87,435 
FRB Ser. 04-C4, Class A4, 5.295s, 2029    62,000  62,157 
Lehman Mortgage Trust       
IFB Ser. 07-5, Class 8A2, IO, 2.215s, 2036    984,728  51,994 
IFB Ser. 07-4, Class 2A2, IO, 1.165s, 2037    3,138,589  165,578 
IFB Ser. 06-6, Class 5A2, IO, 0.995s, 2036    1,077,750  27,159 
IFB Ser. 07-5, Class 10A2, IO, 0.835s, 2037    1,551,654  54,695 
IFB Ser. 07-5, Class 4A3, 7.05s, 2036    534,614  579,526 
FRB Ser. 07-5, Class 4A2, 5.825s, 2037    1,040,942  1,005,211 
Ser. 07-1, Class 3A2, IO, 1.745s, 2037    1,749,950  119,861 
IFB Ser. 06-9, Class 3A2, IO, 1.725s, 2037    988,848  62,481 
IFB Ser. 06-5, Class 2A2, IO, 1.645s, 2036    1,966,428  99,087 
Ser. 06-9, Class 2A3, IO, 1.115s, 2036    3,655,569  208,842 
IFB Ser. 06-9, Class 2A2, IO, 1.115s, 2037    2,544,615  145,666 
IFB Ser. 06-7, Class 2A5, IO, 1.045s, 2036    997,728  53,022 
IFB Ser. 06-6, Class 1A3, IO, 0.995s, 2036    1,540,840  75,844 
IFB Ser. 06-5, Class 1A3, IO, 0.08s, 2036    524,000  3,613 
IFB Ser. 06-4, Class 1A3, IO, 0.08s, 2036    1,115,839  12,059 
IFB Ser. 06-9, Class 1A6, IO, zero %, 2037    1,697,110  9,218 
Merrill Lynch Mortgage Trust       
FRB Ser. 04-BPC1, Class A5, 4.855s, 2041    158,000  150,899 
FRB Ser. 05-MCP1, Class A4, 4.747s, 2043    154,000  145,772 
Morgan Stanley Capital I       
Ser. 07-HQ11, Class A4, 5.447s, 2044    850,000  832,502 
Ser. 05-HQ6, Class A4A, 4.989s, 2042    64,000  62,509 
Residential Asset Securitization Trust IFB Ser.       
06-A7CB, Class 1A6, IO, 0.045s, 2036    312,082  3,450 
Structured Adjustable Rate Mortgage Loan Trust       
FRB Ser. 05-18, Class 6A1, 5.243s, 2035    2,162,860  2,140,669 
Ser. 04-20, Class 1A2, 5.044s, 2035    141,238  139,821 
Wells Fargo Mortgage Backed Securities Trust       
Ser. 06-AR10, Class 3A1, 5.281s, 2036    1,716,950  1,692,135 
Ser. 05-AR2, Class 2A1, 4.545s, 2035    1,362,795  1,336,816 
Ser. 04-R, Class 2A1, 4.362s, 2034    1,393,634  1,365,435 
Ser. 05-AR9, Class 1A2, 4.354s, 2035    61,016  59,744 

Total collateralized mortgage obligations (cost $175,791,323)      $176,364,944 
  
PURCHASED OPTIONS OUTSTANDING (3.7%)(a)       

  Expiration date/  Contract   
  strike price  amount  Value 

Option on an interest rate swap with Lehman Brothers       
for the right to pay a fixed rate swap of 5.19% versus       
the three month USD-LIBOR-BBA maturing       
December 12, 2017.  Dec-07/5.19  $57,535,000  $896,971 
Option on an interest rate swap with Lehman Brothers       
for the right to receive a fixed rate swap of 5.19%       
versus the three month USD-LIBOR-BBA maturing       
December 12, 2017.  Dec-07/5.19  57,535,000  727,818 
Option on an interest rate swap with Lehman Brothers       
Special Financing, Inc. for the right to receive       
a fixed rate swap of 5.775% versus the three month       
USD-LIBOR-BBA maturing July 1, 2018.  Jun-08/5.775  51,442,000  2,391,024 
Option on an interest rate swap with JPMorgan Chase       
Bank, N.A. for the right to receive a fixed rate       
of 5.685% versus the three month USD-LIBOR-BBA maturing       


     
on July 7, 2018.  Jul-08/5.685  32,506,000  1,355,500 
Option on an interest rate swap with Goldman Sachs       
International for the right to pay a fixed rate swap       
of 5.16% versus the three month USD-LIBOR-BBA maturing       
April 28, 2018.  Apr-08/5.16  23,384,000  578,052 
Option on an interest rate swap with Deutschbank for       
the right to receive a fixed rate swap of 5.385%       
versus the three month USD-LIBOR-BBA maturing       
April 16, 2019.  Apr-09/5.385  17,275,000  556,082 
Option on an interest rate swap with JPMorgan Chase       
Bank, N.A. for the right to pay a fixed rate of 5.235%       
versus the three month USD-LIBOR-BBA maturing on       
May 8, 2018.  May-08/5.235  24,347,000  542,451 
Option on an interest rate swap with Deutschbank for       
the right to pay a fixed rate swap of 5.385% versus       
the three month USD-LIBOR-BBA maturing April 16, 2019.  Apr-09/5.385  17,275,000  533,798 
Option on an interest rate swap with JPMorgan Chase       
Bank, N.A. for the right to receive a fixed rate       
of 5.45% versus the three month USD-LIBOR-BBA maturing       
on May 28, 2018.  May-08/5.45  17,029,000  505,080 
Option on an interest rate swap with JPMorgan Chase       
Bank, N.A. for the right to receive a fixed rate       
of 5.235% versus the three month USD-LIBOR-BBA maturing       
on May 08, 2018.  May-08/5.235  24,347,000  499,600 
Option on an interest rate swap with Lehman Brothers       
Special Financing, Inc. for the right to pay a fixed       
rate swap of 5.775% versus the three month       
USD-LIBOR-BBA maturing July 1, 2018.  Jun-08/5.775  51,442,000  480,468 
Option on an interest rate swap with JPMorgan Chase       
Bank, N.A. for the right to pay a fixed rate of 5.315%       
versus the three month USD-LIBOR-BBA maturing on       
April 08, 2019.  Apr-09/5.315  13,713,000  455,546 
Option on an interest rate swap with Goldman Sachs       
International for the right to pay a fixed rate swap       
of 5.325% versus the three month USD-LIBOR-BBA       
maturing April 08, 2019.  Apr-09/5.325  13,713,000  450,335 
Option on an interest rate swap with Goldman Sachs       
International for the right to receive a fixed rate       
swap of 5.325% versus the three month USD-LIBOR-BBA       
maturing April 08, 2019.  Apr-09/5.325  13,713,000  411,664 
Option on an interest rate swap with Goldman Sachs       
International for the right to receive a fixed rate       
swap of 5.16% versus the three month USD-LIBOR-BBA       
maturing April 28, 2018.  Apr-08/5.160  23,384,000  410,857 
Option on an interest rate swap with JPMorgan Chase       
Bank, N.A. for the right to receive a fixed rate       
of 5.315% versus the three month USD-LIBOR-BBA maturing       
on April 08, 2019.  Apr-09/5.315  13,713,000  407,139 
Option on an interest rate swap with JPMorgan Chase       
Bank, N.A. for the right to pay a fixed rate of 5.685%       
versus the three month USD-LIBOR-BBA maturing on       
July 7, 2018.  Jul-08/5.685  32,506,000  371,869 
Option on an interest rate swap with JPMorgan Chase       
Bank, N.A. for the right to pay a fixed rate of 5.45%       
versus the three month USD-LIBOR-BBA maturing on       
May 28, 2018.  May-08/5.45  17,029,000  267,185 
Option on an interest rate swap with JPMorgan Chase       
Bank, N.A. for the right to pay a fixed rate of 5.215%       
versus the three month USD-LIBOR-BBA maturing on       
May 14, 2018.  May-08/5.215  2,946,000  68,907 
Option on an interest rate swap with JPMorgan Chase       
Bank, N.A. for the right to receive a fixed rate       
of 5.215% versus the three month USD-LIBOR-BBA maturing       
on May 14, 2018.  May-08/5.215  2,946,000  58,920 
Option on an interest rate swap with Goldman Sachs       
International for the right to pay a fixed rate       
of 5.1975% versus the three month USD-LIBOR-BBA       
maturing on May 14, 2018.  May-08/5.198  2,150,000  51,794 
Option on an interest rate swap with JPMorgan Chase       
Bank, N.A. for the right to pay a fixed rate of 5.22%       
versus the three month USD-LIBOR-BBA maturing on       
May 14, 2018.  May-08/5.22  2,150,000  49,859 
Option on an interest rate swap with JPMorgan Chase       
Bank, N.A. for the right to receive a fixed rate       
of 5.22% versus the three month USD-LIBOR-BBA maturing       
on May 14, 2018.  May-08/5.22  2,150,000  43,387 
Option on an interest rate swap with Goldman Sachs       
International for the right to receive a fixed rate       
of 5.1975% versus the three month USD-LIBOR-BBA       
maturing on May 14, 2018.  May-08/5.198  2,150,000  41,710 
Option on an interest rate swap with Lehman Brothers       
Special Financing, Inc. for the right to pay a fixed       
rate of 5.20% versus the three month USD-LIBOR-BBA       
maturing on May 14, 2018.  May-08/5.20  1,473,000  35,323 
Option on an interest rate swap with Lehman Brothers       
International (Europe) for the right to receive       
a fixed rate of 5.20% versus the three month       
USD-LIBOR-BBA maturing on May 14, 2018.  May-08/5.20  1,473,000  28,709 
Option on an interest rate swap with Goldman Sachs       
International for the right to pay a fixed rate swap       
of 4.965% versus the three month USD-LIBOR-BBA       
maturing April 29, 2013.  Apr-08/4.965  2,000,000  27,340 
Option on an interest rate swap with Goldman Sachs       
International for the right to receive a fixed rate       
swap of 4.965% versus the three month USD-LIBOR-BBA       
maturing April 29, 2013.  Apr-08/4.965  2,000,000  27,260 
Option on an interest rate swap with JPMorgan Chase       


     
Bank, N.A. for the right to pay a fixed rate of 5.175%       
versus the three month USD-LIBOR-BBA maturing on       
April 29, 2018.  Apr-08/5.175  1,000,000  24,020 
Option on an interest rate swap with JPMorgan Chase       
Bank, N.A. for the right to receive a fixed rate       
of 5.175% versus the three month USD-LIBOR-BBA maturing       
on April 29, 2018.  Apr-08/5.175  1,000,000  18,190 
Option on an interest rate swap with Lehman Brothers       
Special Financing, Inc. for the right to pay a fixed       
rate of 5.21% versus the three month USD-LIBOR-BBA       
maturing on May 14, 2018.  May-08/5.211  589,000  13,895 
Option on an interest rate swap with Lehman Brothers       
Special Financing, Inc. for the right to receive       
a fixed rate of 5.21% versus the three month       
USD-LIBOR-BBA maturing on May 14, 2018.  May-08/5.21  589,000  11,680 
Option on an interest rate swap with JPMorgan Chase       
Bank, N.A. for the right to pay a fixed rate of 5.115%       
versus the three month USD-LIBOR-BBA maturing on       
January 9, 2018.  Jan-08/5.115  86,420,000  1,778,524 
Option on an interest rate swap with JPMorgan Chase       
Bank, N.A. for the right to receive a fixed rate       
of 5.115% versus the three month USD-LIBOR-BBA maturing       
on January 9, 2018.  Jan-08/5.115  86,420,000  1,015,435 

Total purchased options outstanding (cost $17,384,214)      $15,136,392 
  
ASSET-BACKED SECURITIES (2.2%)(a)       

 
    Principal amount  Value 

Bear Stearns Asset Backed Securities Trust IFB Ser.       
07-AC5, Class A6, IO, 1.045s, 2037    3,024,534  $123,935 
Citigroup Mortgage Loan Trust, Inc. IFB Ser. 07-6,       
Class 2A5, IO, 1.145s, 2037    1,236,187  48,829 
Countrywide Alternative Loan Trust IFB Ser. 07-23CB,       
Class A4, IO, 0.995s, 2037    7,429,269  317,196 
Countrywide Home Loans 144A       
IFB Ser. 05-R1, Class 1AS, IO, 0.799s, 2035    19,247,091  607,311 
IFB Ser. 05-R2, Class 1AS, IO, 0.422s, 2035    9,196,837  283,639 
FHLMC Structured Pass Through Securities IFB Ser.       
T-56, Class 2ASI, IO, 2.595s, 2043    376,812  31,087 
Fremont Home Loan Trust FRB Ser. 06-2, Class 2A3,       
5.675s, 2036    33,000  32,010 
GSAMP Trust FRB Ser. 06-HE5, Class A2C, 5.655s, 2036    50,000  48,107 
GSR Mortgage Loan Trust       
IFB Ser. 06-4F, Class 4A2, IO, 1.645s, 2036    658,621  29,177 
IFB Ser. 06-7F, Class 5A2, IO, 1.595s, 2036    769,154  30,151 
Lehman XS Trust       
FRB Ser. 07-6, Class 2A1, 5.715s, 2037    132,733  129,415 
IFB Ser. 07-3, Class 4B, IO, 1.185s, 2037    1,180,468  61,551 
Residential Asset Mortgage Products, Inc. FRB Ser.       
06-RZ2, Class A2, 5.675s, 2036    1,656,000  1,643,580 
Soundview Home Equity Loan Trust FRB Ser. 06-3,       
Class A3, 5.665s, 2036    49,000  47,428 
Structured Adjustable Rate Mortgage Loan Trust FRB       
Ser. 07-8, Class 1A2, 6 1/4s, 2037    3,019,000  3,010,547 
Structured Asset Securities Corp.       
Ser. 07-4, Class 1A4, IO, 1s, 2037    21,590,000  674,064 
Ser. 07-4, Class 1A3, IO, 0.93s, 2037    21,590,000  909,983 
Structured Asset Securities Corp. 144A Ser. 07-RF1,       
Class 1A, IO, 0.489s, 2037    2,459,081  47,706 
Terwin Mortgage Trust 144A FRB Ser. 06-9HGA, Class A1,       
5.585s, 2037    783,450  769,000 

Total asset-backed securities (cost $8,550,709)      $8,844,716 
  
SHORT-TERM INVESTMENTS (8.5%)(a)       

    Principal   
    amount/shares  Value 

U.S. Treasury Bills for an effective yield of 4.86 %,       
maturity date September 27, 2007 (SEG)    $655,000  $652,701 
U.S. Treasury Bills for an effective yield of 4.801 %,       
maturity date September 27, 2007 (SEG)    827,000  824,132 
U.S. Treasury Bills for an effective yield of 4.787 %,       
maturity date September 27, 2007 (SEG)    366,000  364,735 
U.S. Treasury Bills for an effective yield of 4.705 %,       
maturity date September 27, 2007 (SEG)    114,000  113,613 
U.S. Treasury Bills for an effective yield of 4.375 %,       
maturity date September 27, 2007 (SEG)    38,000  37,880 
U.S. Treasury Bills for an effective yield of 3.24 %,       
maturity date September 27, 2007 (SEG)    1,000  997 
U.S. Treasury Bills for an effective yield of 3.75 %,       
maturity date September 27, 2007 (SEG)    34,000  33,908 
Putnam Prime Money Market Fund (e)    32,986,025  32,986,025 

Total short-term investments (cost $35,013,991)      $35,013,991 
 
TOTAL INVESTMENTS       

Total investments (cost $573,596,343) (b)      $571,600,970 


     
FUTURES CONTRACTS OUTSTANDING at 8/31/07 (Unaudited)         

            Unrealized 
      Number of      Expiration  appreciation/ 
      contracts  Value  date  (depreciation) 

Euro-Dollar  90  day (Long)  428  $101,106,975  Sep-07  $(291,502) 
Euro-Dollar  90  day (Long)  264  62,865,000  Sep-09  12,819 
Euro-Dollar  90  day (Short)  1217  290,391,413  Jun-08  (362,761) 
Euro-Dollar  90  day (Short)  846  201,855,600  Sep-08  (208,164) 
U.S. Treasury Bond 20 yr (Short)  826  92,150,625  Dec-07  (1,156,662) 
U.S. Treasury Note 2 yr (Short)  3080  634,961,250  Dec-07  (336,172) 
U.S. Treasury Note 5 yr (Short)  1018  108,623,781  Dec-07  (404,640) 
U.S. Treasury Note 10 yr (Long)  3544  386,462,125  Dec-07  2,103,583 

Total            $(643,499) 


 
WRITTEN OPTIONS OUTSTANDING at 8/31/07 (premiums received $13,905,181) (Unaudited)       

  Contract    Expiration date/   
  amount  strike price  Value 

Option on an interest rate swap with Merrill Lynch Capital Services Inc. for the       
obligation to pay a fixed rate of 5.83% versus the three month USD-LIBOR-BBA       
maturing on July 16, 2018.  $55,728,000  Jul 08/5.83  $2,730,672 
Option on an interest rate swap with Lehman Brothers International (Europe) for       
the obligation to pay a fixed rate of 5.84% versus the three month USD-LIBOR-BBA       
maturing June 18, 2018.  45,560,000  Jun 08/5.84  2,282,556 
Option on an interest rate swap with Lehman Brothers Special Financing, Inc. for       
the obligation to pay a fixed rate of 5.835% versus the three month USD-LIBOR-BBA       
maturing June 18, 2018.  13,668,000  Jun 08/5.835  680,940 
Option on an interest rate swap with Merrill Lynch Capital Services Inc. for the       
obligation to receive a fixed rate of 5.83% versus the three month USD-LIBOR-BBA       
maturing on July 16, 2018.  55,728,000  Jul 08/5.83  475,360 
Option on an interest rate swap with Lehman Brothers Special Financing, Inc. for       
the obligation to receive a fixed rate of 5.84% versus the three month       
USD-LIBOR-BBA maturing June 18, 2018.  45,560,000  Jun 08/5.84  351,723 
Option on an interest rate swap with Lehman Brothers International (Europe) for       
the obligation to receive a fixed rate of 5.835 versus the three month       
USD-LIBOR-BBA maturing June 18, 2018.  13,668,000  Jun 08/5.835  106,747 
Option on an interest rate swap with Citibank, N.A. for the obligation to pay a       
fixed rate of 5.7% versus the three month USD-LIBOR-BBA maturing on May 14, 2018.  12,090,000  May 08/5.70  506,571 
Option on an interest rate swap with Lehman Brothers International for the       
obligation to receive a fixed rate of 5.225% versus the three month USD-LIBOR-BBA       
maturing March 5, 2018.  9,910,000  Mar 08/5.225  190,966 
Option on an interest rate swap with Lehman Brothers International for the       
obligation to pay a fixed rate of 5.225% versus the three month USD-LIBOR-BBA       
maturing March 5, 2018.  9,910,000  Mar 08/5.225  178,380 
Option on an interest rate swap with Citibank, N.A. for the obligation to receive       
a fixed rate of 5.7% versus the three month USD-LIBOR-BBA maturing on       
May 14, 2018.  12,090,000  May 08/5.70  108,689 
Option on an interest rate swap with Lehman Brothers International (Europe) for       
the obligation to pay a fixed rate swap of 5.35% versus the three month       
USD-LIBOR-BBA maturing August 28, 2018.  1,169,000  Aug 08/5.35  32,358 
Option on an interest rate swap with Lehman Brothers International (Europe) for       
the obligation to receive a fixed rate swap of 5.35% versus the three month       
USD-LIBOR-BBA maturing August 28, 2018.  1,169,000  Aug 08/5.35  26,530 
Option on an interest rate swap with JPMorgan Chase Bank, N.A. for the obligation       
to pay a fixed rate of 5.395% versus the three month USD-LIBOR-BBA maturing on       
August 28, 2018.  59,750,000  Aug 08/5.395  1,759,040 
Option on an interest rate swap with JPMorgan Chase Bank, N.A. for the obligation       
to receive a fixed rate of 5.395% versus the three month USD-LIBOR-BBA maturing       
on August 28, 2018.  59,750,000  Aug 08/5.395  1,306,135 
Option on an interest rate swap with Lehman Brothers International (Europe) for       
the obligation to pay a fixed rate of 5.905% versus the three month USD-LIBOR-BBA       
maturing December 17, 2017.  14,792,000  Dec 07/5.905  782,941 
Option on an interest rate swap with Lehman Brothers International (Europe) for       
the obligation to pay a fixed rate swap of 5.385% versus the three month       
USD-LIBOR-BBA maturing August 28, 2018.  2,922,000  Aug 08/5.385  84,855 
Option on an interest rate swap with JPMorgan Chase Bank, N.A. for the obligation       
to receive a fixed rate of 5.51% versus the three month USD-LIBOR-BBA maturing on       
May 14, 2022.  1,473,000  May 12/5.51  71,691 
Option on an interest rate swap with Lehman Brothers International (Europe) for       
the obligation to receive a fixed rate swap of 5.385% versus the three month       
USD-LIBOR-BBA maturing August 28, 2018.  2,922,000  Aug 08/5.385  64,868 
Option on an interest rate swap with JPMorgan Chase Bank, N.A. for the obligation       
to pay a fixed rate of 5.51% versus the three month USD-LIBOR-BBA maturing on       
May 14, 2022.  1,473,000  May 12/5.51  59,494 
Option on an interest rate swap with Lehman Brothers Special Financing, Inc. for       
the obligation to receive a fixed rate of 5.515% versus the three month       
USD-LIBOR-BBA maturing on May 14, 2022.  736,500  May 12/5.515  35,742 
Option on an interest rate swap with Lehman Brothers Special Financing, Inc. for       
the obligation to pay a fixed rate of 5.515% versus the three month USD-LIBOR-BBA       
maturing on May 14, 2022.  736,500  May 12/5.515  29,902 
Option on an interest rate swap with Lehman Brothers International (Europe) for       
the obligation to receive a fixed rate of 5.905% versus the three month       
USD-LIBOR-BBA maturing December 17, 2017.  14,792,000  Dec 07/5.905  18,638 
Option on an interest rate swap with Lehman Brothers Special Financing, Inc. for       
the obligation to pay a fixed rate of 5.52% versus the three month USD-LIBOR-BBA       
maturing on May 14, 2022.  294,500  May 12/5.52  11,974 
Option on an interest rate swap with Lehman Brothers Special Financing, Inc. for       
the obligation to receive a fixed rate of 5.52% versus the three month       
USD-LIBOR-BBA maturing on May 14, 2022.  294,500  May 12/5.52  14,236 
Option on an interest rate swap with JPMorgan Chase Bank, N.A. for the obligation       
to receive a fixed rate of 5.32% versus the three month USD-LIBOR-BBA maturing on       
January 9, 2022.  42,602,000  Jan 12/5.32  2,293,692 
Option on an interest rate swap with JPMorgan Chase Bank, N.A. for the obligation       
to pay a fixed rate of 5.32% versus the three month USD-LIBOR-BBA maturing on       
January 9, 2022.  42,602,000  Jan 12/5.32  1,510,668 

Total      $15,715,368 


TBA SALE COMMITMENTS OUTSTANDING at 8/31/07 (proceeds receivable $115,185,702) (Unaudited)     

 
       Principal    Settlement   
Agency      amount  date  Value 

 
FNMA,  6 1/2s,  September 1, 2037  $28,100,000  9/13/07  $28,521,500 
FNMA,  6s, September 1, 2037  25,900,000  9/13/07  25,865,602 
FNMA,  5 1/2s,  October 1, 2037  21,373,000  10/11/07  20,864,556 
FNMA,  5 1/2s,  September 1, 2037  29,000,000  9/13/07  28,311,250 
FNMA,  5s, October 1, 2037  1,532,000  10/11/07  1,455,400 
FNMA,  5s, September 1, 2037  2,200,000  9/13/07  2,089,484 
FNMA,  4 1/2s,  September 1, 2022  8,800,000  9/18/07  8,441,126 

     
Total               $115,548,918 


INTEREST RATE SWAP CONTRACTS OUTSTANDING at 8/31/07 (Unaudited)     
    Payments    Payments  Unrealized 
Swap counterparty /    Termination  made by  received by  appreciation/ 
Notional amount  date  fund per annum  fund per annum  (depreciation) 

Bank of America, N.A.         
$26,940,000  9/1/15  3 month USD-LIBOR-BBA  4.53%  $(840,984) 

893,000  10/2/16  5.15631%  3 month USD-LIBOR-BBA  (8,929) 

6,530,000  5/31/16  5.58909%  3 month USD-LIBOR-BBA  (279,772) 

24,000,000  10/21/15  4.943%  3 month USD-LIBOR-BBA  38,891 

45,000,000  8/11/15  4.892%  3 month USD-LIBOR-BBA  733,355 

Citibank, N.A.         
44,220,000  7/27/09  5.504%  3 month USD-LIBOR-BBA  (497,131) 

131,500,000  4/6/09  3 month USD-LIBOR-BBA  5.264%  2,391,868 

Credit Suisse International         
1,320,000  9/28/16  5.10886%  3 month USD-LIBOR-BBA  (8,177) 

56,000  8/29/12  5.04556%  3 month USD-LIBOR-BBA  (196) 

Goldman Sachs International         
1,354,000  5/3/16  5.565%  3 month USD-LIBOR-BBA  (56,195) 

21,940,000  1/8/12  3 month USD-LIBOR-BBA  4.98%  15,431 

2,270,000  12/20/16  3 month USD-LIBOR-BBA  5.074%  (23,453) 

15,523,000  11/21/26  3 month USD-LIBOR-BBA  5.2075%  (215,231) 

69,975,000  11/21/08  5.0925%  3 month USD-LIBOR-BBA  (954,129) 

15,642,000  11/20/26  3 month USD-LIBOR-BBA  5.261%  (117,046) 

69,475,000  11/20/08  5.16%  3 month USD-LIBOR-BBA  (1,001,598) 

23,700,000  7/25/09  5.327%  3 month USD-LIBOR-BBA  (186,975) 

833,000  10/19/16  5.32413%  3 month USD-LIBOR-BBA  (18,835) 

JPMorgan Chase Bank, N.A.         
200,000  4/17/17  3 month USD-LIBOR-BBA  5.266%  3,358 

600,000  4/17/09  5.12%  3 month USD-LIBOR-BBA  (9,389) 

22,000,000  10/21/15  4.916%  3 month USD-LIBOR-BBA  77,142 

65,600,000  9/2/15  3 month USD-LIBOR-BBA  4.4505%  (2,394,927) 

15,900,000  8/4/16  3 month USD-LIBOR-BBA  5.5195%  383,061 

31,500,000  8/4/08  3 month USD-LIBOR-BBA  5.40%  91,630 

116,000  8/29/17  5.263%  3 month USD-LIBOR-BBA  (290) 

19,300,000  8/13/12  3 month USD-LIBOR-BBA  5.2%  193,525 

1,847,000  8/2/15  3 month USD-LIBOR-BBA  4.6570%  (58,059) 

20,759,000  3/8/17  3 month USD-LIBOR-BBA  5.28%  369,464 

41,470,000  1/31/17  3 month USD-LIBOR-BBA  5.415%  658,987 

7,965,000  1/19/09  5.24%  3 month USD-LIBOR-BBA  (28,134) 

2,020,000  1/19/17  3 month USD-LIBOR-BBA  5.249%  6,005 

2,147,000  12/19/16  5.0595%  3 month USD-LIBOR-BBA  24,559 

28,000,000  3/30/08  3 month USD-LIBOR-BBA  5.163%  321,357 

13,500,000  3/30/16  3 month USD-LIBOR-BBA  5.2755%  279,300 

4,100,000  7/25/17  3 month USD-LIBOR-BBA  5.652%  135,563 

15,598,000  11/20/26  3 month USD-LIBOR-BBA  5.266%  (107,141) 

69,298,000  11/20/08  5.165%  3 month USD-LIBOR-BBA  (1,004,166) 

23,080,000  10/10/13  5.09%  3 month USD-LIBOR-BBA  (344,693) 

16,590,000  10/10/13  5.054%  3 month USD-LIBOR-BBA  (210,921) 

13,600,000  7/5/17  3 month USD-LIBOR-BBA  4.55%  (723,082) 

3,400,000  6/27/17  3 month USD-LIBOR-BBA  5.712%  128,275 

899,000  9/18/16  5.291%  3 month USD-LIBOR-BBA  (17,776) 

22,000,000  1/17/16  4.946%  3 month USD-LIBOR-BBA  331,623 

20,539,000  8/15/11  5.412%  3 month USD-LIBOR-BBA  (362,779) 

Lehman Brothers International (Europe)       
20,802,000  3/15/09  4.9298%  3 month USD-LIBOR-BBA  (234,200) 

6,196,000  10/23/16  5.325%  3 month USD-LIBOR-BBA  (140,511) 

15,414,000  10/23/08  5.255%  3 month USD-LIBOR-BBA  (241,366) 

17,738,000  8/29/09  5.001%  3 month USD-LIBOR-BBA  (37,765) 


         
6,196,000    10/23/16  3 month USD-LIBOR-BBA  5.3275%  141,681 

15,414,000    10/23/08  3 month USD-LIBOR-BBA  5.26%  242,411 

73,940,000    8/3/16  5.5675%  3 month USD-LIBOR-BBA  (2,035,041) 

139,813,000    8/3/11  5.445%  3 month USD-LIBOR-BBA  (2,605,779) 

38,243,000    2/1/17  3 month USD-LIBOR-BBA  5.08%  (353,932) 

377,000    8/29/17  5.29125%  3 month USD-LIBOR-BBA  (1,804) 

2,390,000    8/29/17  5.3187%  3 month USD-LIBOR-BBA  (4,940) 

9,414,783    8/29/09  5.005%  3 month USD-LIBOR-BBA  (19,199) 

Lehman Brothers Special Financing, Inc.       
81,174,000    9/4/09  3 month USD-LIBOR-BBA  4.836%  (86,044) 

17,146,000    9/4/27  5.4475%  3 month USD-LIBOR-BBA  (19,718) 

17,146,000  (F)  8/31/27  5.4925%  3 month USD-LIBOR-BBA  (109,711) 

81,174,000    8/31/09  3 month USD-LIBOR-BBA  4.89%  14,767 

23,000,000    3/16/09  4.9275%  3 month USD-LIBOR-BBA  (264,907) 

8,600,000    3/16/17  5.034%  3 month USD-LIBOR-BBA  11,990 

37,160,000    9/29/13  5.0555%  3 month USD-LIBOR-BBA  (483,695) 

7,140,000    9/8/16  5.3275%  3 month USD-LIBOR-BBA  (161,764) 

89,764,000    8/3/08  3 month USD-LIBOR-BBA  5.425%  282,042 

585,509    8/29/17  3 month USD-LIBOR-BBA  5.32%  4,049 

14,862,000    6/14/17  3 month USD-LIBOR-BBA  5.8725%  746,792 

19,334,000    6/12/17  3 month USD-LIBOR-BBA  5.717%  735,573 

Morgan Stanley Capital Services, Inc.         
850,000    2/20/17  5.19%  3 month USD-LIBOR-BBA  1,352 

40,000    8/29/17  5.26021%  3 month USD-LIBOR-BBA  (90) 

Total          $(7,906,423) 

(F) Security is valued at fair value following procedures approved by the Trustees.


NOTES

(a) Percentages indicated are based on net assets of $410,010,285.

(b) The aggregate identified cost on a tax basis is $574,945,762, resulting in gross unrealized appreciation and depreciation of $5,710,234 and $9,055,026, respectively, or net unrealized depreciation of $3,344,792.

(NON) Non-income-producing security.

(SEG) A portion of this security was pledged and segregated with the custodian to cover margin requirements for futures contracts at August 31, 2007.

(FWC) Forward commitments.

(e) The fund invests in Putnam Prime Money Market Fund, an open-end management investment company managed by Putnam Investment Management, LLC ("Putnam Management"), the fund's manager, a wholly-owned subsidiary of Putnam, LLC. Investments in Putnam Prime Money Market Fund are valued at its closing net asset value each business day. Management fees paid by the fund are reduced by an amount equal to the management and administrative fees paid by Putnam Prime Money Market Fund with respect to assets invested by the fund in Putnam Prime Money Market Fund. Income distributions earned by the fund totaled $109,797 for the period ended August 31, 2007. During the period ended August 31, 2007, cost of purchases and proceeds of sales of investments in Putnam Prime Money Market Fund aggregated $46,986,025 and $14,000,000, respectively.

At August 31, 2007, liquid assets totaling $24,271,377 have been designated as collateral for open forward commitments, swap contracts and futures contracts.

144A after the name of an issuer represents securities exempt from registration under Rule 144A under the Securities Act of 1933, as amended. These securities may be resold in transactions exempt from registration, normally to qualified institutional buyers.

TBA after the name of a security represents to be announced securities.

The rates shown on Floating Rate Bonds (FRB) and Floating Rate Notes (FRN) are the current interest rates at August 31, 2007.

The dates shown on debt obligations are the original maturity dates.

Inverse Floating Rate Bonds (IFB) are securities that pay interest rates that vary inversely to changes in the market interest rates. As interest rates rise, inverse floaters produce less current income. The interest rates shown are the current interest rates at August 31, 2007.

Security valuation Investments, including mortgage backed securities, are valued on the basis of valuations provided by an independent pricing service approved by the Trustees or dealers selected by Putnam Management, LLC (“Putnam Management”), the fund’s manager, a wholly-owned subsidiary of Putnam, LLC. Such service providers use information with respect to transactions in bonds, quotations from bond dealers, market transactions in comparable securities and various relationships between securities in determining value. Restricted securities are valued at fair value following procedures approved by the Trustees. Such valuations and procedures are reviewed periodically by the Trustees. The fair value of securities is generally determined as the amount that the fund could reasonably expect to realize from an orderly disposition of such securities over a reasonable period of time. By its nature, a fair value price is a good faith estimate of the value of a security at a given point in time and does not reflect an actual market price, which may be different by a material amount.

Stripped securities The fund may invest in stripped securities which represent a participation in securities that may be structured in classes with rights to receive different portions of the interest and principal. Interest-only securities receive all of the interest and principal-only securities receive all of the principal. If the interest-only securities experience greater than anticipated prepayments of principal, the fund may fail to recoup fully its initial investment in these securities. Conversely, principal-only securities increase in value if prepayments are greater than anticipated and decline if prepayments are slower than anticipated. The market value of these securities is highly sensitive to changes in interest rates.

Futures and options contracts The fund may use futures and options contracts to hedge against changes in the values of securities the fund owns or expects to purchase, or for other investment purposes. The fund may also write options on swaps or securities it owns or in which it may invest to increase its current returns.

The potential risk to the fund is that the change in value of futures and options contracts may not correspond to the change in value of the hedged instruments. In addition, losses may arise from changes in the value of the underlying instruments, if there is an illiquid secondary market for the contracts, or if the counterparty to the contract is unable to perform. Risks may exceed amounts recognized on the statement of assets and liabilities. When the contract is closed, the fund records a realized gain or loss equal to the difference between the value of the contract at the time it was opened and the value at the time it was closed. Realized gains and losses on purchased options are included in realized gains and losses on investment securities. If a written call option is exercised, the premium originally received is recorded as an addition to sales proceeds. If a written put option is exercised, the premium originally received is recorded as a reduction to the cost of investments.

Futures contracts are valued at the quoted daily settlement prices established by the exchange on which they trade. The fund and the broker agree to exchange an amount of cash equal to the daily fluctuation in the value of the futures contract. Such receipts or payments are known as “variation margin.” Exchange traded options are valued at the last sale price or, if no sales are reported, the last bid price for purchased options and the last ask price for written options. Options traded over-the-counter are valued using prices supplied by dealers. Futures and written option contracts outstanding at period end, if any, are listed after the fund’s portfolio.

Interest rate swap contracts The fund may enter into interest rate swap contracts, which are arrangements between two parties to exchange cash flows based on a notional principal amount, to manage the fund’s exposure to interest rates. Interest rate swap contracts are marked-to-market daily based upon quotations from an independent pricing service or market makers and the change, if any, is recorded as unrealized gain or loss. Payments received or made are recorded as realized gains or loss. Certain interest rate swap contracts may include extended effective dates. Income related to


these swap contracts is accrued based on the terms of the contract. The fund could be exposed to credit or market risk due to unfavorable changes in the fluctuation of interest rates or if the counterparty defaults on its obligation to perform. Risk of loss may exceed amounts recognized on the statement of assets and liabilities. Interest rate swap contracts outstanding at period end, if any, are listed after the fund’s portfolio.

TBA purchase commitments The fund may enter into “TBA” (to be announced) commitments to purchase securities for a fixed unit price at a future date beyond customary settlement time. Although the unit price has been established, the principal value has not been finalized. However, the amount of the commitments will not significantly differ from the principal amount. The fund holds, and maintains until settlement date, cash or high-grade debt obligations in an amount sufficient to meet the purchase price, or the fund may enter into offsetting contracts for the forward sale of other securities it owns. Income on the securities will not be earned until settlement date. TBA purchase commitments may be considered securities themselves, and involve a risk of loss if the value of the security to be purchased declines prior to the settlement date, which risk is in addition to the risk of decline in the value of the fund’s other assets. Unsettled TBA purchase commitments are valued at fair value of the underlying securities, according to the procedures described under “Security valuation” above. The contract is marked-to-market daily and the change in market value is recorded by the fund as an unrealized gain or loss.

Although the fund will generally enter into TBA purchase commitments with the intention of acquiring securities for its portfolio or for delivery pursuant to options contracts it has entered into, the fund may dispose of a commitment prior to settlement if Putnam Management deems it appropriate to do so.

TBA sale commitments The fund may enter into TBA sale commitments to hedge its portfolio positions or to sell mortgage-backed securities it owns under delayed delivery arrangements. Proceeds of TBA sale commitments are not received until the contractual settlement date. During the time a TBA sale commitment is outstanding, equivalent deliverable securities or an offsetting TBA purchase commitment deliverable on or before the sale commitment date, are held as “cover” for the transaction.

Unsettled TBA sale commitments are valued at fair value of the underlying securities, generally according to the procedures described under “Security valuation” above. The contract is marked-to-market daily and the change in market value is recorded by the fund as an unrealized gain or loss. If the TBA sale commitment is closed through the acquisition of an offsetting purchase commitment, the fund realizes a gain or loss. If the fund delivers securities under the commitment, the fund realizes a gain or a loss from the sale of the securities based upon the unit price established at the date the commitment was entered into. TBA sale commitments outstanding at period end, if any, are listed after the fund’s portfolio.

Dollar rolls To enhance returns, the fund may enter into dollar rolls (principally using TBAs) in which the fund sells securities for delivery in the current month and simultaneously contracts to purchase similar securities on a specified future date. During the period between the sale and subsequent purchase, the fund will not be entitled to receive income and principal payments on the securities sold. The fund will, however, retain the difference between the initial sales price and the forward price for the future purchase. The fund will also be able to earn interest on the cash proceeds that are received from the initial sale. The fund may be exposed to market or credit risk if the price of the security changes unfavorably or the counterparty fails to perform under the terms of the agreement.

For additional information regarding the fund please see the fund's most recent annual or semiannual shareholder report filed on the Securities and Exchange Commission's Web site, www.sec.gov, or visit Putnam's Individual Investor Web site at www.putnaminvestments.com


Item 2. Controls and Procedures:

(a) The registrant's principal executive officer and principal financial officer have concluded, based on their evaluation of the effectiveness of the design and operation of the registrant's disclosure controls and procedures as of a date within 90 days of the filing date of this report, that the design and operation of such procedures are generally effective to provide reasonable assurance that information required to be disclosed by the registrant in this report is recorded, processed, summarized and reported within the time periods specified in the Commission's rules and forms.

(b) Changes in internal control over financial reporting:

During the period, Putnam Fiduciary Trust Company, the fund's transfer agent, began utilizing shareholder systems and systems support provided by DST Systems, Inc. and certain of its affiliates.

Item 3. Exhibits:

Separate certifications for the principal executive officer and principal financial officer of the registrant as required by Rule 30a-2(a) under the Investment Company Act of 1940, as amended, are filed herewith.

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.

Putnam Limited Duration Government Income Fund

By (Signature and Title):

/s/ Janet C. Smith
Janet C. Smith
Principal Accounting Officer
Date: October 30, 2007

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):

/s/ Charles E. Porter
Charles E. Porter
Principal Executive Officer
Date: October 30, 2007

By (Signature and Title):

/s/ Steven D. Krichmar
Steven D. Krichmar
Principal Financial Officer
Date: October 30, 2007