0001752724-24-148840.txt : 20240627 0001752724-24-148840.hdr.sgml : 20240627 20240627154340 ACCESSION NUMBER: 0001752724-24-148840 CONFORMED SUBMISSION TYPE: NPORT-P PUBLIC DOCUMENT COUNT: 2 CONFORMED PERIOD OF REPORT: 20240430 FILED AS OF DATE: 20240627 DATE AS OF CHANGE: 20240627 PERIOD START: 20250131 FILER: COMPANY DATA: COMPANY CONFORMED NAME: VANGUARD FIXED INCOME SECURITIES FUNDS CENTRAL INDEX KEY: 0000106444 ORGANIZATION NAME: IRS NUMBER: 231899003 STATE OF INCORPORATION: DE FISCAL YEAR END: 0131 FILING VALUES: FORM TYPE: NPORT-P SEC ACT: 1940 Act SEC FILE NUMBER: 811-02368 FILM NUMBER: 241078548 BUSINESS ADDRESS: STREET 1: PO BOX 2600 STREET 2: V26 CITY: VALLEY FORGE STATE: PA ZIP: 19482 BUSINESS PHONE: 6106691000 MAIL ADDRESS: STREET 1: PO BOX 2600 STREET 2: V26 CITY: VALLEY FORGE STATE: PA ZIP: 19482 FORMER COMPANY: FORMER CONFORMED NAME: VANGUARD FIXED INCOME SECURITIES FUND INC DATE OF NAME CHANGE: 19920703 FORMER COMPANY: FORMER CONFORMED NAME: WESTMINSTER BOND FUND INC 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Multifamily Structured Pass Through Certificates N/A FHMS K067 A2 3137FAWS3 22013173.00000000 PA USD 20716773.22000000 0.449247381681 Long ABS-MBS USGSE US N 2 2027-07-25 Fixed 3.19400000 N N N N N N Fannie Mae or Freddie Mac N/A FNCL 5 5/24 01F050650 98500000.00000000 PA USD 93328750.00000000 2.023852659287 Long ABS-MBS USGSE US N 2 2024-05-13 Fixed 5.00000000 N N N N N N Federal Home Loan Banks 2549001DPIFGXC1TOL40 FED HOME LN BANK 3130AKYH3 136475000.00000000 PA USD 121702809.53000000 2.639149830143 Long DBT USGSE US N 2 2027-02-10 Fixed 0.83000000 N N N N N N Freddie Mac Pool N/A FR SB8509 3132D6N22 84887514.00000000 PA USD 73995701.49000000 1.604611625424 Long ABS-MBS USGSE US N 2 2036-01-01 Fixed 2.00000000 N N N N N N Freddie Mac Multifamily Structured Pass Through Certificates N/A FHMS K512 A2 3137HBCF9 60500000.00000000 PA USD 59981805.40000000 1.300717478457 Long ABS-MBS USGSE US N 2 2028-11-25 Fixed 5.00000000 N N N N N N Fannie Mae or Freddie Mac N/A FNCI 4 5/24 01F040453 11000000.00000000 PA USD 10424218.75000000 0.226051273998 Long ABS-MBS USGSE US N 2 2024-05-15 Fixed 4.00000000 N N N N N N Freddie Mac Pool N/A FR QS0204 3133HMGM5 7458172.18000000 PA USD 6672752.07000000 0.144699966748 Long ABS-MBS USGSE US N 2 2031-11-01 Fixed 1.50000000 N N N N N N Fannie Mae Pool N/A FN AS0001 3138W9AB6 239888.14000000 PA USD 224789.58000000 0.004874607120 Long ABS-MBS USGSE US N 2 2028-07-01 Fixed 2.00000000 N N N N N N Fannie Mae Pool N/A FN FS6029 3140XMVX1 28304927.97000000 PA USD 25725278.54000000 0.557857823918 Long ABS-MBS USGSE US N 2 2035-08-01 Fixed 2.50000000 N N N N N N Fannie Mae Pool N/A FN FM8991 3140XC7D4 39599497.90000000 PA USD 35334718.30000000 0.766240452128 Long ABS-MBS USGSE US N 2 2036-09-01 Fixed 2.50000000 N N N N N N Federal Home Loan Banks 2549001DPIFGXC1TOL40 FED HOME LN BANK 3130AL2X1 100000000.00000000 PA USD 89165400.00000000 1.933569579646 Long DBT USGSE US N 2 2027-02-17 Fixed 0.85000000 N N N N N N Freddie Mac Multifamily Structured Pass Through Certificates N/A FHMS K077 A2 3137FG6X8 1800000.00000000 PA USD 1718274.06000000 0.037261117562 Long ABS-MBS USGSE US N 2 2028-05-25 Variable 3.85000000 N N N N N N Fannie Mae Pool N/A FN MA4522 31418EAY6 9090320.16000000 PA USD 8145563.19000000 0.176638171233 Long ABS-MBS USGSE US N 2 2032-01-01 Fixed 1.50000000 N N N N N N Federal Home Loan Banks 2549001DPIFGXC1TOL40 FED HOME LN BANK 3130ALCE2 25900000.00000000 PA USD 23120412.00000000 0.501370770636 Long DBT USGSE US N 2 2027-02-26 Fixed 0.92000000 N N N N N N United States Treasury Note/Bond 254900HROIFWPRGM1V77 US TREASURY N/B 91282CHH7 11000000.00000000 PA USD 10802343.75000000 0.234250990450 Long DBT UST US N 2 2026-06-15 Fixed 4.12500000 N N N N N N Fannie Mae Pool N/A FN MA4201 31418DU34 6009611.59000000 PA USD 5532448.43000000 0.119972253645 Long ABS-MBS USGSE US N 2 2030-12-01 Fixed 2.00000000 N N N N N N Freddie Mac Pool N/A FR SB0545 3132CWTA2 13581171.23000000 PA USD 11828761.33000000 0.256509061503 Long ABS-MBS USGSE US N 2 2035-11-01 Fixed 2.00000000 N N N N N N N/A N/A US 5YR NOTE (CBT) Jun24 N/A -4207.00000000 NC USD 6085378.91000000 0.131962661985 N/A DIR N/A N 1 MORGAN STANLEY & CO LLC 9R7GPTSO7KV3UQJZQ078 Short N/A CBOT 5 Year US Treasury Note 2024-06-28 -446735763.83000000 USD 6085378.91000000 N N N Federal Home Loan Banks 2549001DPIFGXC1TOL40 FED HOME LN BANK 3130AL5A8 105695000.00000000 PA USD 94297062.59000000 2.044850711980 Long DBT USGSE US N 2 2027-02-26 Fixed 0.90000000 N N N N N N United States Treasury Note/Bond 254900HROIFWPRGM1V77 US TREASURY N/B 91282CJB8 50000000.00000000 PA USD 49875000.00000000 1.081549376606 Long DBT UST US N 2 2025-09-30 Fixed 5.00000000 N N N N N N Fannie Mae Pool N/A FN MA4476 31418D6N7 6677173.50000000 PA USD 5978807.92000000 0.129651648696 Long ABS-MBS USGSE US N 2 2031-11-01 Fixed 1.50000000 N N N N N N Freddie Mac REMICS N/A FHR 5342 B 3137HAQE9 33987974.33000000 PA USD 32459851.21000000 0.703898382775 Long ABS-MBS USGSE US N 2 2048-03-25 Fixed 4.50000000 N N N N N N Fannie Mae Pool N/A FN MA4390 31418D2Y7 21786634.23000000 PA USD 19957210.55000000 0.432776112865 Long ABS-MBS USGSE US N 2 2031-07-01 Fixed 2.00000000 N N N N N N Fannie Mae Principal Strip N/A FNMA 0 11/15/2030 31358DDS0 7000000.00000000 PA USD 5077352.00000000 0.110103396298 Long DBT USGSE US N 2 2030-11-15 None 0.00000000 N N N N N N Freddie Mac Pool N/A FR RD5046 3133LPTB3 12584743.53000000 PA USD 11433742.89000000 0.247943007417 Long ABS-MBS USGSE US N 2 2031-01-01 Fixed 1.50000000 N N N N N N Federal Home Loan Mortgage Corp S6XOOCT0IEG5ABCC6L87 FREDDIE MAC 3134GXEJ9 174650000.00000000 PA USD 162620631.95000000 3.526461014713 Long DBT USGSE US N 2 2025-11-24 Fixed 0.64000000 N N N N N N Freddie Mac REMICS N/A FHR 4681 DA 3137BYFS4 3724606.50000000 PA USD 3495053.41000000 0.075790934070 Long ABS-MBS USGSE US N 2 2045-04-15 Fixed 3.00000000 N N N N N N Federal National Mortgage Association B1V7KEBTPIMZEU4LTD58 FANNIE MAE 3135G06K4 138500000.00000000 PA USD 128655974.00000000 2.789930596017 Long DBT USGSE US N 2 2025-12-17 Fixed 0.65000000 N N N N N N Fannie Mae Pool N/A FN MA4284 31418DXN7 10237533.45000000 PA USD 9287490.35000000 0.201401090692 Long ABS-MBS USGSE US N 2 2031-03-01 Fixed 1.50000000 N N N N N N United States Treasury Note/Bond 254900HROIFWPRGM1V77 US TREASURY N/B 91282CFE6 30000000.00000000 PA USD 29235937.50000000 0.633987167471 Long DBT UST US N 2 2025-08-15 Fixed 3.12500000 N N N N N N Fannie Mae Pool N/A FN FM7428 3140XBHE3 17259611.75000000 PA USD 14656182.44000000 0.317822255266 Long ABS-MBS USGSE US N 2 2036-05-01 Fixed 1.50000000 N N N N N N Fannie Mae Pool N/A FN FS0819 3140XF4D0 9649527.31000000 PA USD 8595514.27000000 0.186395450633 Long ABS-MBS USGSE US N 2 2037-02-01 Fixed 2.50000000 N N N N N N Fannie Mae Pool N/A FN FS1712 3140XG3W7 12780175.00000000 PA USD 11729451.12000000 0.254355499684 Long ABS-MBS USGSE US N 2 2033-01-01 Fixed 3.00000000 N N N N N N GOVERNMENT NATIONAL MORTGAGE ASSOCIATION 549300M8ZYFG0OCMTT87 GNR 2022-101 PA 38383F7A5 37594205.08000000 PA USD 36037797.47000000 0.781486864921 Long ABS-MBS USGA US N 2 2051-05-20 Fixed 4.50000000 N N N N N N Fannie Mae or Freddie Mac N/A FNCI 1.5 5/24 01F012452 5000000.00000000 PA USD 4197656.25000000 0.091027017551 Long ABS-MBS USGSE US N 2 2024-05-15 Fixed 1.50000000 N N N N N N Federal Home Loan Mortgage Corp S6XOOCT0IEG5ABCC6L87 FREDDIE MAC 3134GXR97 52950000.00000000 PA USD 52149554.85000000 1.130873554652 Long DBT USGSE US N 2 2025-08-28 Fixed 4.16000000 N N N N N N Freddie Mac REMICS N/A FHR 5194 AE 3137H5R74 16538366.46000000 PA USD 13733727.43000000 0.297818633391 Long ABS-MBS USGSE US N 2 2049-08-25 Fixed 2.25000000 N N N N N N Freddie Mac Multifamily Structured Pass Through Certificates N/A FHMS K511 A2 3137HB3G7 31725000.00000000 PA USD 31291877.61000000 0.678570641041 Long ABS-MBS USGSE US N 2 2028-10-25 Fixed 4.86000000 N N N N N N Freddie Mac Pool N/A FR RD5055 3133LPTL1 8673112.03000000 PA USD 7856711.99000000 0.170374375036 Long ABS-MBS USGSE US N 2 2031-04-01 Fixed 1.50000000 N N N N N N Freddie Mac Multifamily Structured Pass Through Certificates N/A FHMS K066 A2 3137F2LJ3 64639000.00000000 PA USD 60853475.14000000 1.319619811568 Long ABS-MBS USGSE US N 2 2027-06-25 Fixed 3.11700000 N N N N N N Fannie Mae Pool N/A FN CA1630 3140Q8Y41 3388474.99000000 PA USD 3180191.60000000 0.068963092580 Long ABS-MBS USGSE US N 2 2033-05-01 Fixed 3.50000000 N N N N N N Fannie Mae Pool N/A FN FS3867 3140XKJM3 24179907.00000000 PA USD 23285250.44000000 0.504945325263 Long ABS-MBS USGSE US N 2 2028-01-01 Fixed 2.50000000 N N N N N N Fannie Mae or Freddie Mac N/A FNCI 4.5 5/24 01F042459 1500000.00000000 PA USD 1448671.88000000 0.031414740224 Long ABS-MBS USGSE US N 2 2024-05-15 Fixed 4.50000000 N N N N N N Freddie Mac Pool N/A FR QN4415 3133GA3Y0 5978487.31000000 PA USD 5064274.37000000 0.109819805269 Long ABS-MBS USGSE US N 2 2035-12-01 Fixed 1.50000000 N N N N N N Fannie Mae Pool N/A FN FM6278 3140X96Q3 16076249.48000000 PA USD 13640479.53000000 0.295796533980 Long ABS-MBS USGSE US N 2 2036-02-01 Fixed 1.50000000 N N N N N N Fannie Mae Pool N/A FN FM8990 3140XC7C6 34354216.35000000 PA USD 30595285.18000000 0.663464894506 Long ABS-MBS USGSE US N 2 2036-09-01 Fixed 2.50000000 N N N N N N Freddie Mac Pool N/A FR SB0982 3132CXCT7 6834748.38000000 PA USD 6415694.99000000 0.139125632419 Long ABS-MBS USGSE US N 2 2037-04-01 Fixed 3.00000000 N N N N N N United States Treasury Note/Bond 254900HROIFWPRGM1V77 US TREASURY N/B 91282CEQ0 137000000.00000000 PA USD 133553593.75000000 2.896136462432 Long DBT UST US N 2 2025-05-15 Fixed 2.75000000 N N N N N N N/A N/A US 2YR NOTE (CBT) Jun24 N/A 3694.00000000 NC USD -6259895.90000000 -0.13574709791 N/A DIR N/A N 1 MORGAN STANLEY & CO LLC 9R7GPTSO7KV3UQJZQ078 Long N/A CBOT 2 Year US Treasury Note Future 2024-06-28 754872083.40000000 USD -6259895.90000000 N N N Fannie Mae Pool N/A FN FM6598 3140XAKL5 23746744.84000000 PA USD 21911833.87000000 0.475162511526 Long ABS-MBS USGSE US N 2 2031-02-01 Fixed 2.00000000 N N N N N N Freddie Mac Multifamily Structured Pass Through Certificates N/A FHMS K057 A2 3137BRQJ7 20900000.00000000 PA USD 19805843.20000000 0.429493681526 Long ABS-MBS USGSE US N 2 2026-07-25 Fixed 2.57000000 N N N N N N Freddie Mac Pool N/A FR RD5044 3133LPS99 11883291.57000000 PA USD 10821400.64000000 0.234664242931 Long ABS-MBS USGSE US N 2 2030-11-01 Fixed 1.50000000 N N N N N N Fannie Mae REMICS N/A FNR 2022-36 A 3136BMS33 2526695.01000000 PA USD 2386465.71000000 0.051750987487 Long ABS-MBS USGSE US N 2 2049-08-25 Fixed 4.50000000 N N N N N N Freddie Mac Gold Pool N/A FG J32374 31307NT79 24669301.90000000 PA USD 23537227.64000000 0.510409501375 Long ABS-MBS USGSE US N 2 2028-11-01 Fixed 2.50000000 N N N N N N Fannie Mae Interest Strip N/A FNMA GEN STRIP 31359YBA4 8000000.00000000 PA USD 7384232.00000000 0.160128551705 Long DBT USGSE US N 2 2025-11-15 None 0.00000000 N N N N N N 2024-06-27 VANGUARD FIXED INCOME SECURITIES FUNDS Ashley Grim Ashley Grim Treasurer XXXX NPORT-EX 2 vg_shorttermfederal.htm
Vanguard® Short-Term Federal Fund
Schedule of Investments (unaudited)
As of April 30, 2024
The fund files its complete schedule of portfolio holdings with the Securities and Exchange Commission (SEC) for the first and third quarters of each fiscal year as an exhibit to its reports on Form N-PORT. The fund’s Form N-PORT reports are available on the SEC’s website at www.sec.gov.
      Coupon Maturity
Date
Face
Amount
($000)
Market
Value
($000)
U.S. Government and Agency Obligations (92.1%)
U.S. Government Securities (15.1%)
1 United States Treasury Inflation Indexed Bonds 0.250% 1/15/25 288,244 283,290
1 United States Treasury Note/Bond 2.750% 5/15/25 137,000 133,554
1 United States Treasury Note/Bond 4.250% 5/31/25 75,000 74,203
  United States Treasury Note/Bond 3.125% 8/15/25 30,000 29,236
  United States Treasury Note/Bond 5.000% 9/30/25 50,000 49,875
2 United States Treasury Note/Bond 2.125% 5/31/26 18,000 16,976
  United States Treasury Note/Bond 4.125% 6/15/26 11,000 10,802
  United States Treasury Note/Bond 4.500% 4/15/27 99,800 98,802
            696,738
Agency Bonds and Notes (43.0%)
3 Fannie Mae Interest Strip 0.000% 11/15/25 8,000 7,384
3 Fannie Mae Principal Strip 0.000% 11/15/30 7,000 5,077
  Federal Farm Credit Banks Funding Corp. 0.680% 3/9/26 275,000 253,097
  Federal Home Loan Banks 0.830% 2/10/27 136,475 121,703
  Federal Home Loan Banks 0.850% 2/17/27 100,000 89,165
  Federal Home Loan Banks 1.020% 2/24/27 10,570 9,465
  Federal Home Loan Banks 0.900% 2/26/27 105,695 94,297
  Federal Home Loan Banks 0.920% 2/26/27 25,900 23,120
  Federal Home Loan Banks 1.115% 2/26/27 49,145 44,119
  Federal Home Loan Banks 4.800% 3/6/28 100,000 98,253
3 Federal Home Loan Mortgage Corp. 0.680% 8/6/25 73,100 69,011
3 Federal Home Loan Mortgage Corp. 4.160% 8/28/25 52,950 52,150
3 Federal Home Loan Mortgage Corp. 0.640% 11/24/25 174,650 162,621
3 Federal Home Loan Mortgage Corp. 0.700% 12/30/25 194,850 180,880
3 Federal National Mortgage Assn. 0.650% 12/17/25 138,500 128,656
3 Federal National Mortgage Assn. 0.650% 12/17/25 180,495 167,666
3 Freddie Mac Principal Strips 0.000% 3/15/31 19,983 14,259
  Private Export Funding Corp. 4.300% 12/15/28 45,000 43,895
  Resolution Funding Corp. Principal Strip 0.000% 1/15/30 394,377 295,548
  Resolution Funding Corp. Principal Strip 0.000% 4/15/30 171,307 126,617
            1,986,983
Conventional Mortgage-Backed Securities (27.7%)
3,4 Freddie Mac Gold Pool 2.000% 9/1/28–6/1/30 1,601 1,389
3,4 Freddie Mac Gold Pool 2.500% 11/1/28 24,669 23,537
4,5 Ginnie Mae 6.500% 6/15/54 93,750 94,585
3,4 UMBS Pool 2.000% 10/1/27–4/1/36 484,804 430,615
3,4,5 UMBS Pool 2.500% 1/1/28–4/1/37 238,075 218,115
3,4,5 UMBS Pool 1.500% 11/1/30–5/15/39 342,391 303,203
3,4,5 UMBS Pool 3.000% 1/1/33–5/15/39 46,142 42,538
3,4,5 UMBS Pool 4.000% 5/15/39–6/25/52 60,300 53,884
3,4,5 UMBS Pool 4.500% 5/15/39 6,500 6,278

      Coupon Maturity
Date
Face
Amount
($000)
Market
Value
($000)
3,4,5 UMBS Pool 5.000% 5/15/39 10,000 9,811
3,4,5 UMBS Pool 5.500% 5/15/54 24,500 23,780
3,4,5 UMBS Pool 6.500% 5/15/54 73,600 74,129
            1,281,864
Nonconventional Mortgage-Backed Securities (6.3%)
3,4 Fannie Mae REMICS 5.500% 9/25/33 5,404 5,400
3,4 Fannie Mae REMICS 2.000% 5/25/45 8,653 7,809
3,4 Fannie Mae REMICS 3.000% 6/25/48 23,919 21,164
3,4 Fannie Mae REMICS 4.500% 8/25/49–10/25/49 72,361 68,639
3,4 Fannie Mae REMICS 2.500% 11/25/49 20,400 18,248
3,4 Freddie Mac REMICS 3.000% 9/15/32–11/25/48 71,682 63,935
3,4 Freddie Mac REMICS 4.500% 10/25/44–3/25/48 41,307 39,422
3,4 Freddie Mac REMICS 2.500% 9/25/48–12/25/48 18,711 15,710
3,4 Freddie Mac REMICS 2.250% 8/25/49 16,538 13,734
4 Ginnie Mae REMICS 4.500% 5/20/51 37,594 36,038
            290,099
Total U.S. Government and Agency Obligations (Cost $4,474,750) 4,255,684
Asset-Backed/Commercial Mortgage-Backed Securities (11.8%)
3,4 Freddie Mac Multifamily Structured Pass-Through Certificates Class A2 Series K057 2.570% 7/25/26 20,900 19,806
3,4 Freddie Mac Multifamily Structured Pass-Through Certificates Class A2 Series K064 3.224% 3/25/27 6,070 5,753
3,4 Freddie Mac Multifamily Structured Pass-Through Certificates Class A2 Series K065 3.243% 4/25/27 19,438 18,393
3,4 Freddie Mac Multifamily Structured Pass-Through Certificates Class A2 Series K066 3.117% 6/25/27 64,639 60,853
3,4 Freddie Mac Multifamily Structured Pass-Through Certificates Class A2 Series K067 3.194% 7/25/27 22,013 20,717
3,4,6 Freddie Mac Multifamily Structured Pass-Through Certificates Class A2 Series K070 3.303% 11/25/27 42,021 39,505
3,4 Freddie Mac Multifamily Structured Pass-Through Certificates Class A2 Series K071 3.286% 11/25/27 6,700 6,287
3,4 Freddie Mac Multifamily Structured Pass-Through Certificates Class A2 Series K072 3.444% 12/25/27 11,900 11,218
3,4,6 Freddie Mac Multifamily Structured Pass-Through Certificates Class A2 Series K-077 3.850% 5/25/28 1,800 1,718
3,4,6 Freddie Mac Multifamily Structured Pass-Through Certificates Class A2 Series K086 3.859% 11/25/28 4,400 4,166
3,4 Freddie Mac Multifamily Structured Pass-Through Certificates Class A2 Series K087 3.771% 12/25/28 3,400 3,214
3,4 Freddie Mac Multifamily Structured Pass-Through Certificates Class A2 Series K088 3.690% 1/25/29 5,400 5,084
3,4 Freddie Mac Multifamily Structured Pass-Through Certificates Class A2 Series K090 3.422% 2/25/29 2,500 2,324

      Coupon Maturity
Date
Face
Amount
($000)
Market
Value
($000)
3,4,6 Freddie Mac Multifamily Structured Pass-Through Certificates Class A2 Series K506 4.650% 8/25/28 6,500 6,369
3,4,6 Freddie Mac Multifamily Structured Pass-Through Certificates Class A2 Series K507 4.800% 9/25/28 30,550 30,038
3,4,6 Freddie Mac Multifamily Structured Pass-Through Certificates Class A2 Series K508 4.740% 8/25/28 33,000 32,446
3,4 Freddie Mac Multifamily Structured Pass-Through Certificates Class A2 Series K509 4.850% 9/25/28 23,000 22,710
3,4,6 Freddie Mac Multifamily Structured Pass-Through Certificates Class A2 Series K510 5.069% 10/25/28 6,000 5,964
3,4 Freddie Mac Multifamily Structured Pass-Through Certificates Class A2 Series K511 4.860% 10/25/28 31,725 31,292
3,4 Freddie Mac Multifamily Structured Pass-Through Certificates Class A2 Series K512 5.000% 11/25/28 60,500 59,982
3,4,6 Freddie Mac Multifamily Structured Pass-Through Certificates Class A2 Series K513 4.724% 12/25/28 60,700 59,528
3,4 Freddie Mac Multifamily Structured Pass-Through Certificates Class A2 Series K514 4.572% 12/25/28 47,925 46,768
3,4,6 Freddie Mac Multifamily Structured Pass-Through Certificates Class A2 Series K520 5.180% 3/25/29 49,800 49,796
Total Asset-Backed/Commercial Mortgage-Backed Securities (Cost $550,169) 543,931
          Shares  
Temporary Cash Investments (3.7%)
Money Market Fund (3.7%)
7 Vanguard Market Liquidity Fund (Cost $168,665) 5.394%   1,686,968 168,680
Total Investments (107.6%) (Cost $5,193,584) 4,968,295
        Maturity
Date
Face
Amount
($000)
 
Conventional Mortgage-Backed Securities—Liability for Sale Commitments (-1.2%)
3,4 UMBS Pool 3.500% 3/25/52 (7,070) (2,793)

      Coupon Maturity
Date
Face
Amount
($000)
Market
Value
($000)
3,4 UMBS Pool 6.000% 5/15/54 (51,100) (50,613)
Total Conventional Mortgage-Backed Securities—Liability for Sale Commitments (Proceeds $50,489) (53,406)
Other Assets and Liabilities—Net (-6.4%) (296,622)
Net Assets (100%) 4,618,267
Cost is in $000.      
1 Securities with a value of $4,008,000 have been segregated as collateral for certain open To Be Announced (TBA) transactions.
2 Securities with a value of $15,780,000 have been segregated as initial margin for open futures contracts.
3 The issuer was placed under federal conservatorship in September 2008; since that time, its daily operations have been managed by the Federal Housing Finance Agency and it receives capital from the U.S. Treasury, as needed to maintain a positive net worth, in exchange for senior preferred stock.
4 The average or expected maturity is shorter than the final maturity shown because of the possibility of interim principal payments and prepayments or the possibility of the issue being called.
5 Includes securities purchased on a when-issued or delayed-delivery basis for which the fund has not taken delivery as of April 30, 2024.
6 Variable-rate security; rate shown is effective rate at period end. Certain variable-rate securities are not based on a published reference rate and spread but are determined by the issuer or agent based on current market conditions.
7 Affiliated money market fund available only to Vanguard funds and certain trusts and accounts managed by Vanguard. Rate shown is the 7-day yield.
  REMICS—Real Estate Mortgage Investment Conduits.
  UMBS—Uniform Mortgage-Backed Securities.

Derivative Financial Instruments Outstanding as of Period End

Futures Contracts
      ($000)
  Expiration Number of
Long (Short)
Contracts
Notional
Amount
Value and
Unrealized
Appreciation
(Depreciation)
Long Futures Contracts        
2-Year U.S. Treasury Note June 2024 3,694 748,612 (6,260)
 
Short Futures Contracts        
5-Year U.S. Treasury Note June 2024 (3,799) (397,916) 5,199
10-Year U.S. Treasury Note June 2024 (3,251) (349,279) 8,960
Long U.S. Treasury Bond June 2024 (111) (12,633) 326
Ultra 10-Year U.S. Treasury Note June 2024 (298) (32,845) 133
Ultra Long U.S. Treasury Bond June 2024 (221) (26,423) (17)
        14,601
        8,341
A. Security Valuation: Securities are valued as of the close of trading on the New York Stock Exchange (generally 4 p.m., Eastern time) on the valuation date. Bonds and other temporary cash investments are valued using the latest bid prices or using valuations based on a matrix system (which considers such factors as security prices, yields, maturities, and ratings), both as furnished by independent pricing services. Structured debt securities, including mortgages and asset-backed securities, are valued using the latest bid prices or using valuations based on a matrix system that considers such factors as issuer, tranche, nominal or option-adjusted spreads, weighted average coupon, weighted average maturity, credit enhancements, and collateral, as furnished by

independent pricing services. Investments in Vanguard Market Liquidity Fund are valued at that fund's net asset value. Securities for which market quotations are not readily available, or whose values have been affected by events occurring before the fund’s pricing time but after the close of the securities’ primary markets, are valued by methods deemed by the valuation designee to represent fair value and subject to oversight by the board of trustees.
B. To Be Announced (TBA) Transactions: A TBA transaction is an agreement to buy or sell mortgage-backed securities with agreed-upon characteristics (face amount, coupon, maturity) for settlement at a future date. The fund may be a seller of TBA transactions to reduce its exposure to the mortgage-backed securities market or in order to sell mortgage-backed securities it owns under delayed-delivery arrangements. When the fund is a buyer of TBA transactions, it maintains cash or short-term investments in an amount sufficient to meet the purchase price at the settlement date of the TBA transaction. The primary risk associated with TBA transactions is that a counterparty may default on its obligations. The fund mitigates its counterparty risk by, among other things, performing a credit analysis of counterparties, allocating transactions among numerous counterparties, and monitoring its exposure to each counterparty. The fund may also enter into a Master Securities Forward Transaction Agreement (MSFTA) with certain counterparties and require them to transfer collateral as security for their performance. In the absence of a default, the collateral pledged or received by the fund cannot be repledged, resold, or rehypothecated. Under an MSFTA, upon a counterparty default (including bankruptcy), the fund may terminate any TBA transactions with that counterparty, determine the net amount owed by either party in accordance with its MSFTA, and sell or retain any collateral held up to the net amount owed to the fund under the MSFTA.
C. Mortgage Dollar Rolls: The fund enters into mortgage-dollar-roll transactions, in which the fund sells mortgage-backed securities to a dealer and simultaneously agrees to purchase similar securities in the future at a predetermined price. The proceeds of the securities sold in mortgage-dollar-roll transactions are typically invested in high-quality short-term fixed income securities. The fund forgoes principal and interest paid on the securities sold, and is compensated by interest earned on the proceeds of the sale and by a lower price on the securities to be repurchased. The fund also enters into mortgage-dollar-roll transactions in which the fund buys mortgage-backed securities from a dealer pursuant to a TBA transaction and simultaneously agrees to sell similar securities in the future at a predetermined price. The securities bought in mortgage-dollar-roll transactions are used to cover an open TBA sell position. The fund continues to earn interest on mortgage-backed security pools already held and receives a lower price on the securities to be sold in the future. The fund accounts for mortgage-dollar-roll transactions as purchases and sales; as such, these transactions may increase the fund’s portfolio turnover rate. Amounts to be received or paid in connection with open mortgage dollar rolls are included in Receivables for Investment Securities Sold or Payables for Investment Securities Purchased.
D. Futures Contracts: The fund uses futures contracts to invest in fixed income asset classes with greater efficiency and lower cost than is possible through direct investment, to add value when these instruments are attractively priced, or to adjust sensitivity to changes in interest rates. The primary risks associated with the use of futures contracts are imperfect correlation between changes in market values of bonds held by the fund and the prices of futures contracts, and the possibility of an illiquid market. Counterparty risk involving futures is mitigated because a regulated clearinghouse is the counterparty instead of the clearing broker. To further mitigate counterparty risk, the fund trades futures contracts on an exchange, monitors the financial strength of its clearing brokers and clearinghouse, and has entered into clearing agreements with its clearing brokers. The clearinghouse imposes initial margin requirements to secure the fund’s performance and requires daily settlement of variation margin representing changes in the market value of each contract. Any securities pledged as initial margin for open contracts are noted in the Schedule of Investments.
Futures contracts are valued at their quoted daily settlement prices. Fluctuations in the value of the contracts are recorded as an asset (liability).

E.  Various inputs may be used to determine the value of the fund’s investments and derivatives. These inputs are summarized in three broad levels for financial statement purposes. The inputs or methodologies used to value securities are not necessarily an indication of the risk associated with investing in those securities.
Level 1—Quoted prices in active markets for identical securities.
Level 2—Other significant observable inputs (including quoted prices for similar securities, interest rates, prepayment speeds, credit risk, etc.).
Level 3—Significant unobservable inputs (including the fund’s own assumptions used to determine the fair value of investments). Any investments and derivatives valued with significant unobservable inputs are noted on the Schedule of Investments.
The following table summarizes the market value of the fund’s investments and derivatives as of April 30, 2024, based on the inputs used to value them:
  Level 1
($000)
Level 2
($000)
Level 3
($000)
Total
($000)
Investments        
Assets        
U.S. Government and Agency Obligations 4,255,684 4,255,684
Asset-Backed/Commercial Mortgage-Backed Securities 543,931 543,931
Temporary Cash Investments 168,680 168,680
Total 168,680 4,799,615 4,968,295
Liabilities        
Conventional Mortgage-Backed Securities—Liability for Sale Commitments 53,406 53,406
Derivative Financial Instruments
Assets        
Futures Contracts1 14,618 14,618
Liabilities        
Futures Contracts1 6,277 6,277
1 Includes cumulative appreciation (depreciation) on futures contracts and centrally cleared swaps, if any, as reported in the Schedule of Investments.