{
  "page": "compare",
  "query": {
    "a": "FSTAX",
    "b": "SPHY"
  },
  "retrieved_at": "2026-07-07T14:27:19+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": "Fidelity Advisor Strategic Income Fund",
    "ticker": "FSTAX",
    "slug": "FSTAX",
    "series_id": "S000005152",
    "html_url": "https://fundwatcher.app/funds/FSTAX/"
  },
  "fund_b": {
    "name": "State Street(R) SPDR(R) Portfolio High Yield Bond ETF",
    "ticker": "SPHY",
    "slug": "SPHY",
    "series_id": "S000036938",
    "html_url": "https://fundwatcher.app/funds/SPHY/"
  },
  "overlap": {
    "coverage_a_by_b": "0.1378906550608876195190952592",
    "coverage_b_by_a": "0.1378906550608876195190952590",
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    "as_of": {
      "a": "2026-03-31",
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      },
      {
        "name": "Fidelity Floating Rate Central Fund",
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      {
        "name": "UNITED KINGDOM G.B. and N.IRELAND 4.125% 03/07/2031 REGS",
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      },
      {
        "name": "US TREASURY N/B",
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      },
      {
        "name": "Bundesrepublik Deutschland Bundesanleihe",
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      },
      {
        "name": "Fidelity Securities Lending Cash Central Fund",
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      {
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      {
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      {
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        "name": "Alliant Holdings Intermediate LLC / Alliant Holdings Co-Issuer",
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        "name": "Venture Global Plaquemines LNG, LLC",
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  },
  "error": null,
  "sources": [
    {
      "label": "N-PORT (fund A)",
      "accession_no": "0000035402-26-003300",
      "as_of": "2026-03-31",
      "edgar_url": "https://www.sec.gov/Archives/edgar/data/795422/000003540226003300/0000035402-26-003300-index.htm"
    },
    {
      "label": "N-PORT (fund B)",
      "accession_no": "0001410368-26-055600",
      "as_of": "2026-03-31",
      "edgar_url": "https://www.sec.gov/Archives/edgar/data/1064642/000141036826055600/0001410368-26-055600-index.htm"
    }
  ]
}