{
  "page": "compare",
  "query": {
    "a": "MBDFX",
    "b": "TLT"
  },
  "retrieved_at": "2026-07-07T16:17:25+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": "AMG GW&K Core Bond ESG Fund",
    "ticker": "MBDFX",
    "slug": "MBDFX",
    "series_id": "S000009914",
    "html_url": "https://fundwatcher.app/funds/MBDFX/"
  },
  "fund_b": {
    "name": "iShares 20+ Year Treasury Bond ETF",
    "ticker": "TLT",
    "slug": "TLT",
    "series_id": "S000004360",
    "html_url": "https://fundwatcher.app/funds/TLT/"
  },
  "overlap": {
    "coverage_a_by_b": "0.05303204980388144806878077881",
    "coverage_b_by_a": "0.05303204980388144806878077881",
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    "as_of": {
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      "b": "2026-02-28"
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      },
      {
        "name": "FREDDIE MAC POOL 3.50%",
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      },
      {
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      },
      {
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      },
      {
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      {
        "name": "JOBSOHIO BEV-B-UNREF",
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      {
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      {
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      {
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  },
  "error": null,
  "sources": [
    {
      "label": "N-PORT (fund A)",
      "accession_no": "0000940400-26-012082",
      "as_of": "2026-01-30",
      "edgar_url": "https://www.sec.gov/Archives/edgar/data/882443/000094040026012082/0000940400-26-012082-index.htm"
    },
    {
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      "accession_no": "0002071691-26-008193",
      "as_of": "2026-02-28",
      "edgar_url": "https://www.sec.gov/Archives/edgar/data/1100663/000207169126008193/0002071691-26-008193-index.htm"
    }
  ]
}