{
  "page": "compare",
  "query": {
    "a": "CMF",
    "b": "SUB"
  },
  "retrieved_at": "2026-07-07T18:55:03+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": "iShares California Muni Bond ETF",
    "ticker": "CMF",
    "slug": "CMF",
    "series_id": "S000019341",
    "html_url": "https://fundwatcher.app/funds/CMF/"
  },
  "fund_b": {
    "name": "iShares Short-Term National Muni Bond ETF",
    "ticker": "SUB",
    "slug": "SUB",
    "series_id": "S000023507",
    "html_url": "https://fundwatcher.app/funds/SUB/"
  },
  "overlap": {
    "coverage_a_by_b": "0.03980617587793122386619029205",
    "coverage_b_by_a": "0.03980617587793122386619029205",
    "shared_count": 109,
    "as_of": {
      "a": "2026-02-28",
      "b": "2026-02-28"
    },
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      },
      {
        "name": "LOS ANGELES UNIF SD-A",
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      {
        "name": "CA ST UNIV TRUSTEES-A",
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      {
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      {
        "name": "San Francisco City & County Airport Comm-San Francisco International Airport",
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        "name": "Orange County Water District, Series 2003A",
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      {
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      {
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      {
        "name": "NY TRANS FIN AUTH-D-1",
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      {
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    ]
  },
  "error": null,
  "sources": [
    {
      "label": "N-PORT (fund A)",
      "accession_no": "0002071691-26-008204",
      "as_of": "2026-02-28",
      "edgar_url": "https://www.sec.gov/Archives/edgar/data/1100663/000207169126008204/0002071691-26-008204-index.htm"
    },
    {
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      "edgar_url": "https://www.sec.gov/Archives/edgar/data/1100663/000207169126008202/0002071691-26-008202-index.htm"
    }
  ]
}