{
  "page": "compare",
  "query": {
    "a": "TSSIX",
    "b": "IORAX"
  },
  "retrieved_at": "2026-07-07T19:45:00+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": "Thornburg Strategic Municipal Income Fund",
    "ticker": "TSSIX",
    "slug": "TSSIX",
    "series_id": "S000025152",
    "html_url": "https://fundwatcher.app/funds/TSSIX/"
  },
  "fund_b": {
    "name": "Invesco AMT-Free Municipal Income Fund",
    "ticker": "IORAX",
    "slug": "IORAX",
    "series_id": "S000064640",
    "html_url": "https://fundwatcher.app/funds/IORAX/"
  },
  "overlap": {
    "coverage_a_by_b": "0.04500587994328163742088255344",
    "coverage_b_by_a": "0.04500587994328163742088255344",
    "shared_count": 15,
    "as_of": {
      "a": "2026-03-31",
      "b": "2026-02-28"
    },
    "a_top": [
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        "name": "Public Energy Authority of Kentucky, Gas Supply Revenue Bonds, Series 2022A-1",
        "value": "5553861.50",
        "weight": "0.01376835",
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      },
      {
        "name": "PATRIOTS EN GRP 5.25% MT",
        "value": "5353050.00",
        "weight": "0.01327052",
        "shared": false
      },
      {
        "name": "Public Energy Authority of Kentucky, Gas Supply Revenue Bonds, Refunding Series 2024A-1",
        "value": "5326775.00",
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      },
      {
        "name": "MO H/E-ST LOUIS-B-1",
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        "weight": "0.01099462",
        "shared": false
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      {
        "name": "California (State of) Community Choice Financing Authority (Green Bonds), Series 2023 C, RB",
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        "weight": "0.01098450",
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      {
        "name": "TARRANT COUNTY HOUSING FINANCE TARMFH 03/43 FIXED 4.6",
        "value": "4028723.92",
        "weight": "0.00998744",
        "shared": false
      },
      {
        "name": "Main Street Natural Gas, Inc., Series 2019A",
        "value": "3880067.90",
        "weight": "0.00961891",
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      },
      {
        "name": "OH BUCGEN 5 06/01/2055",
        "value": "3600000.00",
        "weight": "0.00892461",
        "shared": true
      },
      {
        "name": "S ANTONIO TEX 4.55% 3/1/2043",
        "value": "3477412.05",
        "weight": "0.00862071",
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      },
      {
        "name": "MUNIBOND",
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      },
      {
        "name": "GO Refunding Bonds Series 2017A",
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      },
      {
        "name": "INDIANA ST FIN AUTH REVENUE",
        "value": "3324231.90",
        "weight": "0.00824096",
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      },
      {
        "name": "MAIN STR NAT GA 5% MT",
        "value": "3167127.00",
        "weight": "0.00785149",
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      },
      {
        "name": "SLT LAKE U 5.50% 7/1/2050@",
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      },
      {
        "name": "State of Illinois, Series D",
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      {
        "name": "CAPITAL TRUST AGY FL EDUCTNL FACS REVENUE",
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      {
        "name": "WEST VIRGINIA ST HOSP FIN AUTH",
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      {
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      {
        "name": "DENVER CO ARPT 5% 12/1/48@",
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        "name": "FLORIDA ST LOCAL GOVT FIN COMMISSION EDUCTNL FACS REVENUE",
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        "name": "ENERGY SOUTHEAST A COOPERATIVE ESDPWR 11/35 FIXED 5",
        "value": "2389104.18",
        "weight": "0.00592273",
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      },
      {
        "name": "KIPP NYC PUBLIC CHARTER SCHOOLS 5.0% 07-01-42",
        "value": "2360703.90",
        "weight": "0.00585232",
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      },
      {
        "name": "PREREF IOWA ST FIN AUTH MIDWSTRN DISA REGD V/R B/E PREREFUNDED 12/01/32 @ 100 5.00000000",
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      {
        "name": "SOUTHEAST ENERGY AUTHORITY A COOPERATIVE",
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      {
        "name": "GTR ORLANDO FL AVIATION AUTH ARPT FACS REVENUE",
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      {
        "name": "TEXAS ST MUNI GAS ACQUISITION& TEXAS MUNICIPAL GAS ACQUISITION & SUPPLY CORP IV",
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      {
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      {
        "name": "PRESBYTERIAN HOMES OBLIGATED GROUP 5.25% 07-01-48",
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      {
        "name": "AUSTIN TX ARPT SYS REVENUE",
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        "name": "Main Street Natural Gas, Inc., Series 2025B",
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      {
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      {
        "name": "NY ST TWY AUTH-A",
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        "weight": "0.00507459",
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        "name": "NORTH CAROLINA ST MED CARE COMMISSION RETMNT FACS REVENUE",
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        "weight": "0.00506663",
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      {
        "name": "ALABAMA CMNTY CLG SYS BRD OF TRUSTEES REVENUE",
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      {
        "name": "ILLINOIS ST SALES TAX REVENUE",
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      {
        "name": "Tarrant County Cultural Education Facilities Finance Corp., Series 2025, RB",
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      {
        "name": "ORANGE CNTY FL PRESBYTERIAN RETIREMENT SF 5.0% 08-01-40",
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      {
        "name": "Chicago O'Hare International Airport",
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      {
        "name": "TARRANT TX EDFC 5% 10/1/2049",
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      {
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        "name": "WASHINGTON ST HSG FIN COMMISSION NONPROFIT HSG REVENUE",
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        "name": "Water Works Board of the City of Birmingham (The), Series 2016B",
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        "name": "SALT RIVER-SER B",
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      {
        "name": "County of Broward Tourist Development Tax Revenue",
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      {
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      {
        "name": "Tender Option Bond Trust Receipts/Certificates",
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      {
        "name": "PHILADELPHIA PA AUTH FOR INDL DEV HOSP REVENUE",
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      {
        "name": "San Antonio, TX Electric and Gas Systems Rev. A",
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      {
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      },
      {
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      {
        "name": "Maryland Transportation Authority, Revenue Bonds, Transportation Facilities Projects, Series 2021A",
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      {
        "name": "MET TRANS AUTH-A-A2",
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    ]
  },
  "error": null,
  "sources": [
    {
      "label": "N-PORT (fund A)",
      "accession_no": "0001410368-26-051184",
      "as_of": "2026-03-31",
      "edgar_url": "https://www.sec.gov/Archives/edgar/data/816153/000141036826051184/0001410368-26-051184-index.htm"
    },
    {
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      "accession_no": "0000909466-26-000151",
      "as_of": "2026-02-28",
      "edgar_url": "https://www.sec.gov/Archives/edgar/data/909466/000090946626000151/0000909466-26-000151-index.htm"
    }
  ]
}