{
  "page": "compare",
  "query": {
    "a": "GSUIX",
    "b": "FSMOX"
  },
  "retrieved_at": "2026-07-07T16:20:31+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": "Goldman Sachs U.S. Mortgages Fund",
    "ticker": "GSUIX",
    "slug": "GSUIX",
    "series_id": "S000009305",
    "html_url": "https://fundwatcher.app/funds/GSUIX/"
  },
  "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": "0.1008549578515276897767315692",
    "coverage_b_by_a": "0.1008549578515276897767315692",
    "shared_count": 34,
    "as_of": {
      "a": "2026-03-31",
      "b": "2026-02-28"
    },
    "a_top": [
      {
        "name": "FNCL 5.5 4/26",
        "value": "24100312.80",
        "weight": "0.05377725",
        "shared": false
      },
      {
        "name": "FNCI 4.5 4/25",
        "value": "17857969.20",
        "weight": "0.03984813",
        "shared": false
      },
      {
        "name": "G2SF 5.5 4/25",
        "value": "14077421.40",
        "weight": "0.03141225",
        "shared": true
      },
      {
        "name": "Uniform Mortgage-Backed Security, TBA",
        "value": "11371248.90",
        "weight": "0.02537372",
        "shared": true
      },
      {
        "name": "G2SF 5 5/26",
        "value": "10862372.40",
        "weight": "0.02423821",
        "shared": false
      },
      {
        "name": "Uniform Mortgage-Backed Security, TBA",
        "value": "8411249.60",
        "weight": "0.01876880",
        "shared": false
      },
      {
        "name": "FN MA4325",
        "value": "8089860.40",
        "weight": "0.01805165",
        "shared": false
      },
      {
        "name": "Uniform Mortgage-Backed Security, TBA",
        "value": "7044374.40",
        "weight": "0.01571876",
        "shared": false
      },
      {
        "name": "FNCL 5 4/26",
        "value": "6899648.70",
        "weight": "0.01539582",
        "shared": false
      },
      {
        "name": "Federal National Mortgage Association",
        "value": "6837938.71",
        "weight": "0.01525812",
        "shared": false
      },
      {
        "name": "FNCL 5 3/24",
        "value": "5919843.60",
        "weight": "0.01320949",
        "shared": true
      },
      {
        "name": "G2SF 2 4/26",
        "value": "5766851.30",
        "weight": "0.01286811",
        "shared": true
      },
      {
        "name": "Uniform Mortgage-Backed Security, TBA",
        "value": "5506406.40",
        "weight": "0.01228695",
        "shared": true
      },
      {
        "name": "MONEYMKT",
        "value": "5263654.61",
        "weight": "0.01174528",
        "shared": false
      },
      {
        "name": "UMBS, 30 Year",
        "value": "4774351.59",
        "weight": "0.01065345",
        "shared": false
      },
      {
        "name": "FREDDIE MAC GOLD POOL FG G60985",
        "value": "4668961.81",
        "weight": "0.01041828",
        "shared": false
      },
      {
        "name": "FNMA-15YR",
        "value": "4593359.50",
        "weight": "0.01024959",
        "shared": false
      },
      {
        "name": "FR SD7540",
        "value": "4436464.16",
        "weight": "0.00989949",
        "shared": true
      },
      {
        "name": "FR SD0294",
        "value": "4372832.07",
        "weight": "0.00975750",
        "shared": false
      },
      {
        "name": "G2SF 2.5 4/24",
        "value": "4292489.00",
        "weight": "0.00957823",
        "shared": true
      },
      {
        "name": "FN CA6988",
        "value": "4290798.14",
        "weight": "0.00957445",
        "shared": false
      },
      {
        "name": "Ginnie Mae",
        "value": "3862082.00",
        "weight": "0.00861782",
        "shared": true
      },
      {
        "name": "Uniform Mortgage-Backed Security, TBA",
        "value": "3859687.20",
        "weight": "0.00861248",
        "shared": true
      },
      {
        "name": "G2SF 4 4/23",
        "value": "3742343.60",
        "weight": "0.00835064",
        "shared": false
      },
      {
        "name": "G2SF 3.5 5/25",
        "value": "3648750.00",
        "weight": "0.00814179",
        "shared": false
      },
      {
        "name": "FR SD8128",
        "value": "3215845.45",
        "weight": "0.00717581",
        "shared": false
      },
      {
        "name": "UMBS",
        "value": "3158823.71",
        "weight": "0.00704857",
        "shared": false
      },
      {
        "name": "FR RA5276",
        "value": "3115380.15",
        "weight": "0.00695163",
        "shared": false
      },
      {
        "name": "FNCL 6 4/26",
        "value": "3056953.20",
        "weight": "0.00682126",
        "shared": true
      },
      {
        "name": "G2SF 6 4/25",
        "value": "3049453.20",
        "weight": "0.00680453",
        "shared": true
      },
      {
        "name": "FNCL 4.5 4/26",
        "value": "2892656.40",
        "weight": "0.00645465",
        "shared": true
      },
      {
        "name": "FNCL 4 4/26",
        "value": "2827148.40",
        "weight": "0.00630848",
        "shared": false
      },
      {
        "name": "FR RQ0012",
        "value": "2651174.86",
        "weight": "0.00591581",
        "shared": false
      },
      {
        "name": "FNCL UMBS 5.0 RJ3017 12-01-54",
        "value": "2645893.38",
        "weight": "0.00590403",
        "shared": false
      },
      {
        "name": "FR SD8492",
        "value": "2634764.42",
        "weight": "0.00587919",
        "shared": false
      },
      {
        "name": "Fannie Mae Pool",
        "value": "2624844.16",
        "weight": "0.00585706",
        "shared": false
      },
      {
        "name": "Fannie Mae Pool",
        "value": "2609935.53",
        "weight": "0.00582379",
        "shared": false
      },
      {
        "name": "G2 MA7937",
        "value": "2587560.70",
        "weight": "0.00577386",
        "shared": false
      },
      {
        "name": "G2 MA8347",
        "value": "2562329.61",
        "weight": "0.00571756",
        "shared": false
      },
      {
        "name": "Freddie Mac Pool",
        "value": "2539995.85",
        "weight": "0.00566773",
        "shared": false
      },
      {
        "name": "UMBS",
        "value": "2470876.89",
        "weight": "0.00551350",
        "shared": false
      },
      {
        "name": "Fannie Mae Pool",
        "value": "2455141.15",
        "weight": "0.00547838",
        "shared": false
      },
      {
        "name": "Freddie Mac Pool",
        "value": "2431220.57",
        "weight": "0.00542501",
        "shared": false
      },
      {
        "name": "FNCL UMBS 6.0 CB7339 10-01-53",
        "value": "2422116.76",
        "weight": "0.00540469",
        "shared": false
      },
      {
        "name": "G2 MA8042",
        "value": "2415850.79",
        "weight": "0.00539071",
        "shared": false
      },
      {
        "name": "GOVERNMENT NATIONAL MORTGAGE ASSOCIATION GNR 2021-135 A",
        "value": "2379807.52",
        "weight": "0.00531028",
        "shared": false
      },
      {
        "name": "FANNIE MAE POOL",
        "value": "2367247.25",
        "weight": "0.00528226",
        "shared": false
      },
      {
        "name": "FNMA POOL CB8346 FN 04/54 FIXED 6",
        "value": "2352036.48",
        "weight": "0.00524832",
        "shared": false
      },
      {
        "name": "FR SD8257",
        "value": "2341078.66",
        "weight": "0.00522386",
        "shared": false
      },
      {
        "name": "FR SD8515",
        "value": "2340354.75",
        "weight": "0.00522225",
        "shared": false
      }
    ],
    "b_top": [
      {
        "name": "Government National Mortgage Association, TBA",
        "value": "90856414.87",
        "weight": "0.05584781",
        "shared": false
      },
      {
        "name": "GNII II 5.5% 03/01/2056 #TBA",
        "value": "79763977.13",
        "weight": "0.04902948",
        "shared": false
      },
      {
        "name": "FNCL 6 3/24",
        "value": "61262452.90",
        "weight": "0.03765693",
        "shared": false
      },
      {
        "name": "Uniform Mortgage-Backed Security, TBA",
        "value": "60228234.17",
        "weight": "0.03702121",
        "shared": false
      },
      {
        "name": "G2SF 5.5 4/25",
        "value": "56535509.55",
        "weight": "0.03475136",
        "shared": true
      },
      {
        "name": "Fannie Mae or Freddie Mac",
        "value": "39186538.58",
        "weight": "0.02408726",
        "shared": false
      },
      {
        "name": "G2SF 6 4/25",
        "value": "33850132.36",
        "weight": "0.02080707",
        "shared": true
      },
      {
        "name": "FNCL 2 4/26",
        "value": "26627986.73",
        "weight": "0.01636775",
        "shared": true
      },
      {
        "name": "GNMA TBA",
        "value": "26046169.43",
        "weight": "0.01601011",
        "shared": false
      },
      {
        "name": "Government National Mortgage Association, TBA",
        "value": "25562909.80",
        "weight": "0.01571306",
        "shared": false
      },
      {
        "name": "FNCL 5.5 3/25",
        "value": "24386251.20",
        "weight": "0.01498979",
        "shared": false
      },
      {
        "name": "FNCI 5 4/21",
        "value": "22549691.69",
        "weight": "0.01386089",
        "shared": false
      },
      {
        "name": "FNCL 6 4/26",
        "value": "17025376.66",
        "weight": "0.01046519",
        "shared": true
      },
      {
        "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": false
      },
      {
        "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": false
      },
      {
        "name": "G2SF 2 4/26",
        "value": "11627093.95",
        "weight": "0.00714697",
        "shared": true
      },
      {
        "name": "G2 MA6930",
        "value": "11253002.76",
        "weight": "0.00691702",
        "shared": false
      },
      {
        "name": "FNMA POOL CB8330 FN 04/54 FIXED 5.5",
        "value": "11067359.80",
        "weight": "0.00680291",
        "shared": false
      },
      {
        "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": false
      },
      {
        "name": "G2SF 2.5 4/24",
        "value": "10850593.83",
        "weight": "0.00666967",
        "shared": true
      },
      {
        "name": "FN FM7484",
        "value": "10166785.63",
        "weight": "0.00624934",
        "shared": false
      },
      {
        "name": "FNMA 30YR 5% 08/01/2052#CB4352",
        "value": "9713524.55",
        "weight": "0.00597073",
        "shared": false
      },
      {
        "name": "G2 MA7988",
        "value": "9693317.79",
        "weight": "0.00595831",
        "shared": false
      },
      {
        "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": false
      },
      {
        "name": "Ginnie Mae",
        "value": "7903160.80",
        "weight": "0.00485793",
        "shared": true
      },
      {
        "name": "G2SF 5 3/25",
        "value": "7902685.35",
        "weight": "0.00485764",
        "shared": false
      },
      {
        "name": "G2SF 4.5 4/26",
        "value": "7893473.60",
        "weight": "0.00485198",
        "shared": false
      },
      {
        "name": "G2SF 5 4/26",
        "value": "7891918.65",
        "weight": "0.00485102",
        "shared": false
      },
      {
        "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": false
      },
      {
        "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": false
      },
      {
        "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": false
      },
      {
        "name": "FNMA UMBS, 30 Year",
        "value": "5683608.88",
        "weight": "0.00349361",
        "shared": false
      },
      {
        "name": "BX TRUST",
        "value": "5580695.74",
        "weight": "0.00343035",
        "shared": false
      },
      {
        "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": false
      },
      {
        "name": "G2 MA8149",
        "value": "5201623.65",
        "weight": "0.00319734",
        "shared": false
      },
      {
        "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": "0001410368-26-051336",
      "as_of": "2026-03-31",
      "edgar_url": "https://www.sec.gov/Archives/edgar/data/822977/000141036826051336/0001410368-26-051336-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"
    }
  ]
}