{
  "page": "compare",
  "query": {
    "a": "MBOIX",
    "b": "PRTIX"
  },
  "retrieved_at": "2026-07-07T16:35:40+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": "Madison Core Bond Fund",
    "ticker": "MBOIX",
    "slug": "MBOIX",
    "series_id": "S000020646",
    "html_url": "https://fundwatcher.app/funds/MBOIX/"
  },
  "fund_b": {
    "name": "T. Rowe Price U.S. Treasury Intermediate Index Fund",
    "ticker": "PRTIX",
    "slug": "PRTIX",
    "series_id": "S000002167",
    "html_url": "https://fundwatcher.app/funds/PRTIX/"
  },
  "overlap": {
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    "coverage_b_by_a": "0.09264301486951138180509221909",
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    "as_of": {
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      "b": "2026-02-28"
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        "name": "FREDDIE MAC POOL FR 04/52 FIXED 3.5",
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      {
        "name": "T Rowe Price Government Reserve Investment Fund",
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      {
        "name": "5-Year T-Note Futures, Jun-2026,ETH",
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        "name": "GINNIE MAE II POOL",
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  },
  "error": null,
  "sources": [
    {
      "label": "N-PORT (fund A)",
      "accession_no": "0001410368-26-064089",
      "as_of": "2026-04-30",
      "edgar_url": "https://www.sec.gov/Archives/edgar/data/1040612/000141036826064089/0001410368-26-064089-index.htm"
    },
    {
      "label": "N-PORT (fund B)",
      "accession_no": "0001099263-26-004397",
      "as_of": "2026-02-28",
      "edgar_url": "https://www.sec.gov/Archives/edgar/data/853437/000109926326004397/0001099263-26-004397-index.htm"
    }
  ]
}