{
  "page": "compare",
  "query": {
    "a": "CMFEX",
    "b": "FIGDX"
  },
  "retrieved_at": "2026-07-07T17:44:32+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": "American Funds Mortgage Fund",
    "ticker": "CMFEX",
    "slug": "CMFEX",
    "series_id": "S000030190",
    "html_url": "https://fundwatcher.app/funds/CMFEX/"
  },
  "fund_b": {
    "name": "Fidelity Series Sustainable Investment Grade Bond Fund",
    "ticker": "FIGDX",
    "slug": "FIGDX",
    "series_id": "S000080313",
    "html_url": "https://fundwatcher.app/funds/FIGDX/"
  },
  "overlap": {
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    "coverage_b_by_a": "0.07228654987891845059678487518",
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    "as_of": {
      "a": "2026-02-28",
      "b": "2026-02-28"
    },
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      },
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      {
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      {
        "name": "Federal Farm Credit, 03",
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      {
        "name": "FNCL UMBS 6.0 QX4065 01-01-55",
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      {
        "name": "UMBS, 30 Year",
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      {
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      {
        "name": "GOVERNMENT NATIONAL MORTGAGE CORPORATION",
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      {
        "name": "Fannie Mae or Freddie Mac",
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    ],
    "b_top": [
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      {
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      {
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      {
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      {
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      {
        "name": "Uniform Mortgage-Backed Security, TBA",
        "value": "269153.33",
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      {
        "name": "US TREASURY N/B",
        "value": "268389.75",
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      {
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      },
      {
        "name": "Allegro CLO XII Ltd., Series 2020-1A, Class A1R",
        "value": "250568.75",
        "weight": "0.01524817",
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      },
      {
        "name": "RR Ltd., Series 2024-28RA, Class A1R",
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      },
      {
        "name": "Magnetite XXVI Ltd., Series 2020-26A, Class AR2",
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      },
      {
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      {
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      {
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      {
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      {
        "name": "FNCL 5.5 3/25",
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      {
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      {
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      {
        "name": "US TREASURY N/B",
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      {
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      {
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      {
        "name": "G2SF 5 3/25",
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      {
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      {
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      },
      {
        "name": "Uniform Mortgage-Backed Security, TBA",
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      {
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        "value": "107165.63",
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      {
        "name": "Uniform Mortgage-Backed Security, TBA",
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      },
      {
        "name": "Government National Mortgage Association, TBA",
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      },
      {
        "name": "Magnetite Xlv Ltd., Series 2025-45A, Class A1",
        "value": "100023.30",
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      },
      {
        "name": "US TREASURY N/B",
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      {
        "name": "US TREASURY N/B",
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      },
      {
        "name": "Uniform Mortgage-Backed Security, TBA",
        "value": "94242.19",
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      },
      {
        "name": "FN MA4654",
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      {
        "name": "US TREASURY N/B",
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      {
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    ]
  },
  "error": null,
  "sources": [
    {
      "label": "N-PORT (fund A)",
      "accession_no": "0001193125-26-182050",
      "as_of": "2026-02-28",
      "edgar_url": "https://www.sec.gov/Archives/edgar/data/1496998/000119312526182050/0001193125-26-182050-index.htm"
    },
    {
      "label": "N-PORT (fund B)",
      "accession_no": "0000035402-26-002622",
      "as_of": "2026-02-28",
      "edgar_url": "https://www.sec.gov/Archives/edgar/data/35315/000003540226002622/0000035402-26-002622-index.htm"
    }
  ]
}