{
  "page": "compare",
  "query": {
    "a": "LMBSX",
    "b": "GSUIX"
  },
  "retrieved_at": "2026-07-07T18:36:13+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": "Western Asset Mortgage Total Return Fund",
    "ticker": "LMBSX",
    "slug": "LMBSX",
    "series_id": "S000016649",
    "html_url": "https://fundwatcher.app/funds/LMBSX/"
  },
  "fund_b": {
    "name": "Goldman Sachs U.S. Mortgages Fund",
    "ticker": "GSUIX",
    "slug": "GSUIX",
    "series_id": "S000009305",
    "html_url": "https://fundwatcher.app/funds/GSUIX/"
  },
  "overlap": {
    "coverage_a_by_b": "0.1342144490321026291600664049",
    "coverage_b_by_a": "0.1342144490321026291600664049",
    "shared_count": 13,
    "as_of": {
      "a": "2026-03-31",
      "b": "2026-03-31"
    },
    "a_top": [
      {
        "name": "FNCL 5.5 4/26",
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        "weight": "0.04570137",
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      },
      {
        "name": "FNCL 5 4/26",
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        "weight": "0.04187344",
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      },
      {
        "name": "FNCL 6 4/26",
        "value": "20491633.43",
        "weight": "0.04142476",
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      },
      {
        "name": "FNCL 2.5 4/26",
        "value": "15052781.25",
        "weight": "0.03042987",
        "shared": false
      },
      {
        "name": "FNMA 20YR 2% 08/01/2042#FS8579",
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      },
      {
        "name": "G2SF 5.5 4/25",
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      },
      {
        "name": "G2SF 5 4/26",
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      },
      {
        "name": "FNCL 4.5 4/26",
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      },
      {
        "name": "G2SF 2.5 4/24",
        "value": "7141890.63",
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      },
      {
        "name": "G2SF 4.5 4/26",
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        "name": "FNCL 3.5 4/26",
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      },
      {
        "name": "FNCL 3 4/26",
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      },
      {
        "name": "G2SF 2 4/26",
        "value": "6693257.77",
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      },
      {
        "name": "FREDDIE MAC GOLD POOL P#G67701 3.00000000",
        "value": "6435288.69",
        "weight": "0.01300923",
        "shared": false
      },
      {
        "name": "FNCL 2 4/26",
        "value": "5398210.90",
        "weight": "0.01091273",
        "shared": true
      },
      {
        "name": "Fannie Mae REMICS",
        "value": "5281834.74",
        "weight": "0.01067747",
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      },
      {
        "name": "G2SF 6 4/25",
        "value": "4881419.76",
        "weight": "0.00986801",
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      },
      {
        "name": "Fannie Mae Pool",
        "value": "4859527.57",
        "weight": "0.00982375",
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      },
      {
        "name": "Government National Mortgage Association",
        "value": "4573619.70",
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      },
      {
        "name": "Government National Mortgage Association",
        "value": "4107283.36",
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      },
      {
        "name": "Government National Mortgage Association",
        "value": "3905074.68",
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      },
      {
        "name": "FREDDIE MAC STACR TRUST 2019-FTR1 SER 2019-FTR1 CL B2 V/R REGD 144A P/P 12.53628000",
        "value": "3319803.97",
        "weight": "0.00671113",
        "shared": false
      },
      {
        "name": "Freddie Mac REMICS",
        "value": "3294483.33",
        "weight": "0.00665995",
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      },
      {
        "name": "Freddie Mac REMICS",
        "value": "3113333.96",
        "weight": "0.00629374",
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      },
      {
        "name": "FREDDIE MAC REMICS FHR 4210 Z",
        "value": "3024450.82",
        "weight": "0.00611406",
        "shared": false
      },
      {
        "name": "G2SF 3 4/26",
        "value": "2678718.03",
        "weight": "0.00541515",
        "shared": false
      },
      {
        "name": "Freddie Mac REMICS",
        "value": "2660658.22",
        "weight": "0.00537864",
        "shared": false
      },
      {
        "name": "Fannie Mae Pool",
        "value": "2561819.99",
        "weight": "0.00517883",
        "shared": false
      },
      {
        "name": "Freddie Mac REMICS",
        "value": "2470170.75",
        "weight": "0.00499356",
        "shared": false
      },
      {
        "name": "280 PARK AVENUE MORTGAGE TRUST PRK 2017 280P F 144A",
        "value": "2431138.75",
        "weight": "0.00491466",
        "shared": false
      },
      {
        "name": "Freddie Mac STACR REMIC Trust 2026-DNA2",
        "value": "2402828.40",
        "weight": "0.00485743",
        "shared": false
      },
      {
        "name": "STACR TRUST 2018-HRP1 SER 2018-HRP1 CL B2 V/R REGD 144A P/P 15.93628000",
        "value": "2390713.72",
        "weight": "0.00483294",
        "shared": false
      },
      {
        "name": "Multi Family Connecticut Ave Series 2020-01, Class CE",
        "value": "2332822.95",
        "weight": "0.00471591",
        "shared": false
      },
      {
        "name": "Ginnie Mae II Pool",
        "value": "2317707.65",
        "weight": "0.00468535",
        "shared": false
      },
      {
        "name": "Freddie Mac REMICS",
        "value": "2309423.63",
        "weight": "0.00466860",
        "shared": false
      },
      {
        "name": "GNMA II POOL 785944 G2 02/52 FIXED 3",
        "value": "2307866.25",
        "weight": "0.00466546",
        "shared": false
      },
      {
        "name": "SWITCH Data Centers - SWCH 2025-DATA E",
        "value": "2216819.25",
        "weight": "0.00448140",
        "shared": false
      },
      {
        "name": "CEDR Commercial Mortgage Trust 2022-SNAI",
        "value": "2205411.53",
        "weight": "0.00445834",
        "shared": false
      },
      {
        "name": "GOVERNMENT NATIONAL MORTGAGE ASSOCIATION GNR 2023-92 AH",
        "value": "2180997.30",
        "weight": "0.00440898",
        "shared": false
      },
      {
        "name": "Freddie Mac REMICS",
        "value": "2137689.44",
        "weight": "0.00432144",
        "shared": false
      },
      {
        "name": "GOVERNMENT NATL MTG ASN MLFY R 1.4% 06/16/2063",
        "value": "2123991.47",
        "weight": "0.00429374",
        "shared": false
      },
      {
        "name": "Freddie Mac REMICS",
        "value": "2115847.16",
        "weight": "0.00427728",
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      },
      {
        "name": "JP Morgan Chase Commercial Mortgage Securities Trust 2015-FL7",
        "value": "2079674.96",
        "weight": "0.00420416",
        "shared": false
      },
      {
        "name": "GS Mortgage Securities Corp II",
        "value": "2060183.35",
        "weight": "0.00416475",
        "shared": false
      },
      {
        "name": "SMB Private Education Loan Trust, Series 2021-A, Class C",
        "value": "1999056.44",
        "weight": "0.00404118",
        "shared": false
      },
      {
        "name": "Western Asset Premier Institutional Government Reserves",
        "value": "1962446.33",
        "weight": "0.00396717",
        "shared": false
      },
      {
        "name": "Fannie Mae Pool",
        "value": "1961222.24",
        "weight": "0.00396470",
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      },
      {
        "name": "SEB Funding LLC, Series 2024-1A, Class A2",
        "value": "1904937.21",
        "weight": "0.00385092",
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      },
      {
        "name": "SMB Private Education Loan Trust, Series 2020-A, Class B",
        "value": "1877873.60",
        "weight": "0.00379621",
        "shared": false
      },
      {
        "name": "Bayview Opportunity Master Fund VII 2025-EDU1 LLC",
        "value": "1877795.32",
        "weight": "0.00379605",
        "shared": false
      }
    ],
    "b_top": [
      {
        "name": "FNCL 5.5 4/26",
        "value": "24100312.80",
        "weight": "0.05377725",
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      },
      {
        "name": "FNCI 4.5 4/25",
        "value": "17857969.20",
        "weight": "0.03984813",
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      },
      {
        "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": false
      },
      {
        "name": "G2SF 5 5/26",
        "value": "10862372.40",
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      },
      {
        "name": "Uniform Mortgage-Backed Security, TBA",
        "value": "8411249.60",
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      {
        "name": "FN MA4325",
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      },
      {
        "name": "Uniform Mortgage-Backed Security, TBA",
        "value": "7044374.40",
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      },
      {
        "name": "FNCL 5 4/26",
        "value": "6899648.70",
        "weight": "0.01539582",
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      },
      {
        "name": "Federal National Mortgage Association",
        "value": "6837938.71",
        "weight": "0.01525812",
        "shared": false
      },
      {
        "name": "FNCL 5 3/24",
        "value": "5919843.60",
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      },
      {
        "name": "G2SF 2 4/26",
        "value": "5766851.30",
        "weight": "0.01286811",
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      },
      {
        "name": "Uniform Mortgage-Backed Security, TBA",
        "value": "5506406.40",
        "weight": "0.01228695",
        "shared": false
      },
      {
        "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",
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      },
      {
        "name": "FR SD7540",
        "value": "4436464.16",
        "weight": "0.00989949",
        "shared": false
      },
      {
        "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": false
      },
      {
        "name": "Uniform Mortgage-Backed Security, TBA",
        "value": "3859687.20",
        "weight": "0.00861248",
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      },
      {
        "name": "G2SF 4 4/23",
        "value": "3742343.60",
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      },
      {
        "name": "G2SF 3.5 5/25",
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      },
      {
        "name": "FR SD8128",
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      },
      {
        "name": "UMBS",
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      },
      {
        "name": "FR RA5276",
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        "weight": "0.00695163",
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      },
      {
        "name": "FNCL 6 4/26",
        "value": "3056953.20",
        "weight": "0.00682126",
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      },
      {
        "name": "G2SF 6 4/25",
        "value": "3049453.20",
        "weight": "0.00680453",
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      },
      {
        "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",
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      },
      {
        "name": "Fannie Mae Pool",
        "value": "2609935.53",
        "weight": "0.00582379",
        "shared": false
      },
      {
        "name": "G2 MA7937",
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        "weight": "0.00577386",
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      },
      {
        "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",
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      },
      {
        "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
      }
    ]
  },
  "error": null,
  "sources": [
    {
      "label": "N-PORT (fund A)",
      "accession_no": "0000940400-26-021635",
      "as_of": "2026-03-31",
      "edgar_url": "https://www.sec.gov/Archives/edgar/data/764624/000094040026021635/0000940400-26-021635-index.htm"
    },
    {
      "label": "N-PORT (fund B)",
      "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"
    }
  ]
}