{
  "page": "compare",
  "query": {
    "a": "FSEC",
    "b": "FSMOX"
  },
  "retrieved_at": "2026-07-07T15:24:53+00:00",
  "disclaimer": "Informational only — not investment advice. FundWatcher presents publicly available data and makes no recommendation to buy or sell any security. Verify all figures against the source filing before relying on them.",
  "attribution": "Data sourced from U.S. SEC EDGAR filings (Forms N-PORT, N-CEN, and prospectus Risk/Return summaries). FundWatcher is not affiliated with the SEC.",
  "terms": {
    "notice": "Use of this data is subject to the FundWatcher Terms of Service. Information may be used only for personal, non-commercial research and may not be redistributed.",
    "url": "https://fundwatcher.app/terms/"
  },
  "fund_a": {
    "name": "Fidelity Investment Grade Securitized ETF",
    "ticker": "FSEC",
    "slug": "FSEC",
    "series_id": "S000071132",
    "html_url": "https://fundwatcher.app/funds/FSEC/"
  },
  "fund_b": {
    "name": "Fidelity SAI Investment Grade Securitized Fund",
    "ticker": "FSMOX",
    "slug": "FSMOX",
    "series_id": "S000080417",
    "html_url": "https://fundwatcher.app/funds/FSMOX/"
  },
  "overlap": {
    "coverage_a_by_b": "0.4473031699365946414250036740",
    "coverage_b_by_a": "0.4473031699365946414250036740",
    "shared_count": 286,
    "as_of": {
      "a": "2026-02-28",
      "b": "2026-02-28"
    },
    "a_top": [
      {
        "name": "Government National Mortgage Association, TBA",
        "value": "483742815.28",
        "weight": "0.06464782",
        "shared": true
      },
      {
        "name": "GNII II 5.5% 03/01/2056 #TBA",
        "value": "399301001.68",
        "weight": "0.05336294",
        "shared": true
      },
      {
        "name": "G2SF 5.5 4/25",
        "value": "248427400.13",
        "weight": "0.03320006",
        "shared": true
      },
      {
        "name": "FNCL 6 3/24",
        "value": "218790811.26",
        "weight": "0.02923940",
        "shared": true
      },
      {
        "name": "GNMA TBA",
        "value": "217347872.34",
        "weight": "0.02904657",
        "shared": true
      },
      {
        "name": "Fannie Mae or Freddie Mac",
        "value": "203673557.06",
        "weight": "0.02721912",
        "shared": true
      },
      {
        "name": "G2SF 6 4/25",
        "value": "184748312.76",
        "weight": "0.02468993",
        "shared": true
      },
      {
        "name": "Government National Mortgage Association, TBA",
        "value": "146495985.21",
        "weight": "0.01957786",
        "shared": true
      },
      {
        "name": "FNCI 5 4/21",
        "value": "129235859.59",
        "weight": "0.01727120",
        "shared": true
      },
      {
        "name": "G2SF 2 4/26",
        "value": "114640181.31",
        "weight": "0.01532062",
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      },
      {
        "name": "FNCL 5.5 3/25",
        "value": "113904114.98",
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      },
      {
        "name": "G2SF 5 4/26",
        "value": "92849049.26",
        "weight": "0.01240843",
        "shared": true
      },
      {
        "name": "G2SF 5 3/25",
        "value": "92821106.02",
        "weight": "0.01240470",
        "shared": true
      },
      {
        "name": "FR SD7548",
        "value": "72579012.52",
        "weight": "0.00969952",
        "shared": false
      },
      {
        "name": "US TREASURY N/B",
        "value": "62499851.09",
        "weight": "0.00835254",
        "shared": true
      },
      {
        "name": "G2SF 2.5 4/24",
        "value": "62214482.10",
        "weight": "0.00831440",
        "shared": true
      },
      {
        "name": "FEDERAL NAT MTG ASN GTD REM PA 21-13 BE 1.25% 02/25/2050",
        "value": "60804827.37",
        "weight": "0.00812601",
        "shared": false
      },
      {
        "name": "FNMA 30YR 5.5% 04/01/2055#CC0241",
        "value": "58594135.85",
        "weight": "0.00783057",
        "shared": false
      },
      {
        "name": "Fidelity Cash Central Fund",
        "value": "56434037.33",
        "weight": "0.00754190",
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      },
      {
        "name": "FHLG 30YR 2.5% 04/01/2052#SL1958",
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      },
      {
        "name": "Uniform Mortgage-Backed Security, TBA",
        "value": "50621530.61",
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      },
      {
        "name": "G2 MA7988",
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      },
      {
        "name": "FNMA 30YR 2.5% 09/01/2050#CA6947",
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        "shared": false
      },
      {
        "name": "FNMA 30YR 2.5% 08/01/2050#CA6709",
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        "weight": "0.00588978",
        "shared": false
      },
      {
        "name": "FNMA 30YR 2.5% 09/01/2051#CB1547",
        "value": "43280945.66",
        "weight": "0.00578410",
        "shared": false
      },
      {
        "name": "FHLG 15YR 1.5% 05/01/2036#RC1950",
        "value": "40919245.84",
        "weight": "0.00546848",
        "shared": false
      },
      {
        "name": "FR SD8106",
        "value": "40008328.40",
        "weight": "0.00534675",
        "shared": true
      },
      {
        "name": "US TREASURY N/B",
        "value": "35198268.27",
        "weight": "0.00470393",
        "shared": false
      },
      {
        "name": "FNMA 30YR 2.5% 12/01/2051#FM9695",
        "value": "34666333.20",
        "weight": "0.00463284",
        "shared": false
      },
      {
        "name": "G2 MA8043",
        "value": "34471577.82",
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      },
      {
        "name": "G2 MB0024",
        "value": "32671449.84",
        "weight": "0.00436624",
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      },
      {
        "name": "Ginnie Mae",
        "value": "32659280.12",
        "weight": "0.00436462",
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      },
      {
        "name": "G2SF 4.5 4/26",
        "value": "32611354.63",
        "weight": "0.00435821",
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      },
      {
        "name": "GNII II 6.5% 03/01/2056 #TBA",
        "value": "30840559.38",
        "weight": "0.00412156",
        "shared": true
      },
      {
        "name": "US TREASURY N/B",
        "value": "29038462.50",
        "weight": "0.00388073",
        "shared": true
      },
      {
        "name": "FHLG 30YR 5% 08/01/2052#SD1482",
        "value": "28498900.47",
        "weight": "0.00380862",
        "shared": false
      },
      {
        "name": "FNCL 5 3/24",
        "value": "28126873.60",
        "weight": "0.00375890",
        "shared": true
      },
      {
        "name": "ONEMAIN FINL ISSUANCE TR 2019-2 3.14% 10/14/2036 144A",
        "value": "27506723.90",
        "weight": "0.00367602",
        "shared": false
      },
      {
        "name": "Freddie Mac Multifamily Structured Pass Through Certificates",
        "value": "27284219.95",
        "weight": "0.00364629",
        "shared": false
      },
      {
        "name": "FNMA 30YR 6% 11/01/2054#FA2958",
        "value": "26636639.72",
        "weight": "0.00355974",
        "shared": false
      },
      {
        "name": "TOYOTA LEASE OWNER TRUST 2026-A 4.09% 02/22/2028 144A",
        "value": "26008627.67",
        "weight": "0.00347582",
        "shared": false
      },
      {
        "name": "Uniform Mortgage-Backed Security, TBA",
        "value": "25610647.79",
        "weight": "0.00342263",
        "shared": true
      },
      {
        "name": "FNCL 4.5 4/26",
        "value": "25521619.13",
        "weight": "0.00341073",
        "shared": true
      },
      {
        "name": "FR RB5099",
        "value": "25358519.25",
        "weight": "0.00338894",
        "shared": false
      },
      {
        "name": "Freddie Mac Pool",
        "value": "24861139.17",
        "weight": "0.00332246",
        "shared": false
      },
      {
        "name": "FNMA POOL MA4202 FN 12/40 FIXED 1.5",
        "value": "24737225.38",
        "weight": "0.00330591",
        "shared": false
      },
      {
        "name": "FNMA 15YR 1.5% 04/01/2036#FM6100",
        "value": "22165178.00",
        "weight": "0.00296217",
        "shared": false
      },
      {
        "name": "UMBS",
        "value": "21941040.96",
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      },
      {
        "name": "UMBS",
        "value": "21769809.64",
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      },
      {
        "name": "US TREASURY N/B",
        "value": "21514750.00",
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      }
    ],
    "b_top": [
      {
        "name": "Government National Mortgage Association, TBA",
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        "weight": "0.05584781",
        "shared": true
      },
      {
        "name": "GNII II 5.5% 03/01/2056 #TBA",
        "value": "79763977.13",
        "weight": "0.04902948",
        "shared": true
      },
      {
        "name": "FNCL 6 3/24",
        "value": "61262452.90",
        "weight": "0.03765693",
        "shared": true
      },
      {
        "name": "Uniform Mortgage-Backed Security, TBA",
        "value": "60228234.17",
        "weight": "0.03702121",
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      },
      {
        "name": "G2SF 5.5 4/25",
        "value": "56535509.55",
        "weight": "0.03475136",
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      },
      {
        "name": "Fannie Mae or Freddie Mac",
        "value": "39186538.58",
        "weight": "0.02408726",
        "shared": true
      },
      {
        "name": "G2SF 6 4/25",
        "value": "33850132.36",
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      },
      {
        "name": "FNCL 2 4/26",
        "value": "26627986.73",
        "weight": "0.01636775",
        "shared": true
      },
      {
        "name": "GNMA TBA",
        "value": "26046169.43",
        "weight": "0.01601011",
        "shared": true
      },
      {
        "name": "Government National Mortgage Association, TBA",
        "value": "25562909.80",
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        "shared": true
      },
      {
        "name": "FNCL 5.5 3/25",
        "value": "24386251.20",
        "weight": "0.01498979",
        "shared": true
      },
      {
        "name": "FNCI 5 4/21",
        "value": "22549691.69",
        "weight": "0.01386089",
        "shared": true
      },
      {
        "name": "FNCL 6 4/26",
        "value": "17025376.66",
        "weight": "0.01046519",
        "shared": false
      },
      {
        "name": "Uniform Mortgage-Backed Security, TBA",
        "value": "16615625.60",
        "weight": "0.01021333",
        "shared": true
      },
      {
        "name": "GNII II 6.5% 03/01/2056 #TBA",
        "value": "14549451.00",
        "weight": "0.00894329",
        "shared": true
      },
      {
        "name": "FNCL 5 3/24",
        "value": "14540589.12",
        "weight": "0.00893784",
        "shared": true
      },
      {
        "name": "FNMA 30YR 3.5% 01/01/2050#FS3728",
        "value": "14202665.10",
        "weight": "0.00873012",
        "shared": false
      },
      {
        "name": "WELLS FARGO COMMERCIAL MORTGAGE TRUST 2021-FCMT A TSFR1M+131.448 12/31/2049 144A",
        "value": "13450792.29",
        "weight": "0.00826796",
        "shared": true
      },
      {
        "name": "G2SF 2 4/26",
        "value": "11627093.95",
        "weight": "0.00714697",
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      },
      {
        "name": "G2 MA6930",
        "value": "11253002.76",
        "weight": "0.00691702",
        "shared": true
      },
      {
        "name": "FNMA POOL CB8330 FN 04/54 FIXED 5.5",
        "value": "11067359.80",
        "weight": "0.00680291",
        "shared": true
      },
      {
        "name": "FNMA 30YR 2.5% 05/01/2051#CB0447",
        "value": "10968265.29",
        "weight": "0.00674200",
        "shared": false
      },
      {
        "name": "Fidelity Cash Central Fund",
        "value": "10938785.17",
        "weight": "0.00672387",
        "shared": true
      },
      {
        "name": "G2SF 2.5 4/24",
        "value": "10850593.83",
        "weight": "0.00666967",
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      },
      {
        "name": "FN FM7484",
        "value": "10166785.63",
        "weight": "0.00624934",
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      },
      {
        "name": "FNMA 30YR 5% 08/01/2052#CB4352",
        "value": "9713524.55",
        "weight": "0.00597073",
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      },
      {
        "name": "G2 MA7988",
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      },
      {
        "name": "CGCMT 2016-C1 A4",
        "value": "8582874.82",
        "weight": "0.00527574",
        "shared": false
      },
      {
        "name": "FEDERAL HOME LN MTG MLT CTF GT 3% 05/25/2048",
        "value": "8074980.30",
        "weight": "0.00496355",
        "shared": false
      },
      {
        "name": "US TREASURY N/B",
        "value": "7904009.41",
        "weight": "0.00485845",
        "shared": true
      },
      {
        "name": "Ginnie Mae",
        "value": "7903160.80",
        "weight": "0.00485793",
        "shared": true
      },
      {
        "name": "G2SF 5 3/25",
        "value": "7902685.35",
        "weight": "0.00485764",
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      },
      {
        "name": "G2SF 4.5 4/26",
        "value": "7893473.60",
        "weight": "0.00485198",
        "shared": true
      },
      {
        "name": "G2SF 5 4/26",
        "value": "7891918.65",
        "weight": "0.00485102",
        "shared": true
      },
      {
        "name": "Freddie Mac Pool",
        "value": "7732973.55",
        "weight": "0.00475332",
        "shared": false
      },
      {
        "name": "FEDERAL NAT MTG ASN GTD REM PA SOFR30A+155 11/25/2053",
        "value": "7292380.65",
        "weight": "0.00448250",
        "shared": false
      },
      {
        "name": "FEDERAL NAT MTG ASN GTD REM PA 3% 07/25/2043",
        "value": "6867459.78",
        "weight": "0.00422130",
        "shared": false
      },
      {
        "name": "Uniform Mortgage-Backed Securities",
        "value": "6729269.24",
        "weight": "0.00413636",
        "shared": true
      },
      {
        "name": "G2 MA7051",
        "value": "6256398.76",
        "weight": "0.00384570",
        "shared": false
      },
      {
        "name": "Uniform Mortgage-Backed Security, TBA",
        "value": "6229617.03",
        "weight": "0.00382923",
        "shared": true
      },
      {
        "name": "FNCL 4.5 4/26",
        "value": "6224694.84",
        "weight": "0.00382621",
        "shared": true
      },
      {
        "name": "US TREASURY N/B",
        "value": "5798062.50",
        "weight": "0.00356396",
        "shared": true
      },
      {
        "name": "FHLG 30YR 2.5% 03/01/2051#RA4749",
        "value": "5790582.20",
        "weight": "0.00355937",
        "shared": false
      },
      {
        "name": "PRPM LLC, Series 2024-RPL1, Class A1",
        "value": "5735398.06",
        "weight": "0.00352545",
        "shared": true
      },
      {
        "name": "FNMA UMBS, 30 Year",
        "value": "5683608.88",
        "weight": "0.00349361",
        "shared": false
      },
      {
        "name": "BX TRUST",
        "value": "5580695.74",
        "weight": "0.00343035",
        "shared": true
      },
      {
        "name": "FHLM 30YR 5.5% 05/01/2053#RA9058",
        "value": "5577232.54",
        "weight": "0.00342822",
        "shared": false
      },
      {
        "name": "FNMA GTD MTG PASS THRU CTF 4.62% 04/25/2030",
        "value": "5246207.31",
        "weight": "0.00322475",
        "shared": true
      },
      {
        "name": "G2 MA8149",
        "value": "5201623.65",
        "weight": "0.00319734",
        "shared": true
      },
      {
        "name": "FEDERAL HOME LN MTG MLT CTF GT 3% 02/25/2048",
        "value": "5023137.15",
        "weight": "0.00308763",
        "shared": false
      }
    ]
  },
  "error": null,
  "sources": [
    {
      "label": "N-PORT (fund A)",
      "accession_no": "0000035402-26-002610",
      "as_of": "2026-02-28",
      "edgar_url": "https://www.sec.gov/Archives/edgar/data/1562565/000003540226002610/0000035402-26-002610-index.htm"
    },
    {
      "label": "N-PORT (fund B)",
      "accession_no": "0000035402-26-002611",
      "as_of": "2026-02-28",
      "edgar_url": "https://www.sec.gov/Archives/edgar/data/35315/000003540226002611/0000035402-26-002611-index.htm"
    }
  ]
}