{
  "page": "compare",
  "query": {
    "a": "MMFVX",
    "b": "MFSIX"
  },
  "retrieved_at": "2026-07-07T17:29:01+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": "MassMutual Equity Opportunities Fund",
    "ticker": "MMFVX",
    "slug": "MMFVX",
    "series_id": "S000003681",
    "html_url": "https://fundwatcher.app/funds/MMFVX/"
  },
  "fund_b": {
    "name": "Madison Sustainable Equity Fund",
    "ticker": "MFSIX",
    "slug": "MFSIX",
    "series_id": "S000074726",
    "html_url": "https://fundwatcher.app/funds/MFSIX/"
  },
  "overlap": {
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    "coverage_b_by_a": "0.2800597863321482941480233156",
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    "as_of": {
      "a": "2025-06-30",
      "b": "2025-01-31"
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        "name": "MASTERCARD INC CL A",
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        "name": "KIMBERLY CLARK CORP",
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      {
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        "name": "SOUTHERN CO",
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      {
        "name": "BOEING CO/THE",
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      {
        "name": "EQUITY RESIDENTIAL REIT",
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        "name": "ZIMMER BIOMET HO",
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        "name": "CF INDUSTRIES HOLDINGS INC",
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      {
        "name": "State Street Navigator Securities Lending Portfolio II",
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      {
        "name": "TJX COS INC",
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      {
        "name": "US BANCORP DEL",
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      {
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        "name": "TE CONNECTIVITY PLC",
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      {
        "name": "SCHWAB CHARLES CORP",
        "value": "55008.80",
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        "name": "ADOBE INC",
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      {
        "name": "UNION PACIFIC CORP",
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      {
        "name": "VERTEX PHARMACEUTICALS INC",
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    ]
  },
  "error": null,
  "sources": [
    {
      "label": "N-PORT (fund A)",
      "accession_no": "0001752724-25-201534",
      "as_of": "2025-06-30",
      "edgar_url": "https://www.sec.gov/Archives/edgar/data/916053/000175272425201534/0001752724-25-201534-index.htm"
    },
    {
      "label": "N-PORT (fund B)",
      "accession_no": "0001752724-25-065803",
      "as_of": "2025-01-31",
      "edgar_url": "https://www.sec.gov/Archives/edgar/data/1040612/000175272425065803/0001752724-25-065803-index.htm"
    }
  ]
}