{
  "page": "compare",
  "query": {
    "a": "CTTIX",
    "b": "MCFTX"
  },
  "retrieved_at": "2026-07-07T19:26:21+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 Responsible Municipal Income Fund",
    "ticker": "CTTIX",
    "slug": "CTTIX",
    "series_id": "S000005140",
    "html_url": "https://fundwatcher.app/funds/CTTIX/"
  },
  "fund_b": {
    "name": "MFS California Municipal Bond Fund",
    "ticker": "MCFTX",
    "slug": "MCFTX",
    "series_id": "S000002530",
    "html_url": "https://fundwatcher.app/funds/MCFTX/"
  },
  "overlap": {
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    "coverage_b_by_a": "0.02399823153949955349063685523",
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      "a": "2026-03-31",
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        "name": "BLUEHUB LOAN FUND SR UNSECURED 01/30 3.099",
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      {
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        "name": "VIRGINIA ST HSG DEV AUTH",
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      {
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      {
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        "name": "IRVINE CMNTY FACS DT",
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      {
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        "name": "CALIFORNIA COMMUNITY VAR",
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  "sources": [
    {
      "label": "N-PORT (fund A)",
      "accession_no": "0001410368-26-056113",
      "as_of": "2026-03-31",
      "edgar_url": "https://www.sec.gov/Archives/edgar/data/319676/000141036826056113/0001410368-26-056113-index.htm"
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}