{
  "page": "compare",
  "query": {
    "a": "CSBCX",
    "b": "USGAX"
  },
  "retrieved_at": "2026-07-07T17:12:02+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": "Calvert Bond Fund",
    "ticker": "CSBCX",
    "slug": "CSBCX",
    "series_id": "S000008718",
    "html_url": "https://fundwatcher.app/funds/CSBCX/"
  },
  "fund_b": {
    "name": "Morgan Stanley Long Duration Government Opportunities Fund",
    "ticker": "USGAX",
    "slug": "USGAX",
    "series_id": "S000002426",
    "html_url": "https://fundwatcher.app/funds/USGAX/"
  },
  "overlap": {
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    "coverage_b_by_a": "0.1036281355461483250069320652",
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    "as_of": {
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      "b": "2026-03-31"
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      {
        "name": "UMBS, 30 Year",
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      {
        "name": "BROOKFIELD ASSE",
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        "name": "Cloud Capital Holdco LP, Series 2024-1A, Class A2",
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      {
        "name": "LIBMUT V4.125 12/15/51 144A",
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        "name": "ASIAN INFRASTRUC",
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        "name": "HCA INC",
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        "name": "Fortitude Group Holdings, LLC",
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      {
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      {
        "name": "TENN VALLEY AUTH",
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      {
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      {
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      {
        "name": "Champs Trust, Series 2025-2, Class A",
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      {
        "name": "Government National Mortgage Association",
        "value": "1879019.06",
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    ]
  },
  "error": null,
  "sources": [
    {
      "label": "N-PORT (fund A)",
      "accession_no": "0001410368-26-050773",
      "as_of": "2026-03-31",
      "edgar_url": "https://www.sec.gov/Archives/edgar/data/356682/000141036826050773/0001410368-26-050773-index.htm"
    },
    {
      "label": "N-PORT (fund B)",
      "accession_no": "0001410368-26-054467",
      "as_of": "2026-03-31",
      "edgar_url": "https://www.sec.gov/Archives/edgar/data/730044/000141036826054467/0001410368-26-054467-index.htm"
    }
  ]
}