{
  "page": "compare",
  "query": {
    "a": "MIPZX",
    "b": "FIPDX"
  },
  "retrieved_at": "2026-07-07T17:52:33+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 Inflation-Protected and Income Fund",
    "ticker": "MIPZX",
    "slug": "MIPZX",
    "series_id": "S000003780",
    "html_url": "https://fundwatcher.app/funds/MIPZX/"
  },
  "fund_b": {
    "name": "Fidelity Inflation-Protected Bond Index Fund",
    "ticker": "FIPDX",
    "slug": "FIPDX",
    "series_id": "S000037003",
    "html_url": "https://fundwatcher.app/funds/FIPDX/"
  },
  "overlap": {
    "coverage_a_by_b": "0.2226961514007265871082913356",
    "coverage_b_by_a": "0.2226961514007265871082913355",
    "shared_count": 41,
    "as_of": {
      "a": "2026-03-31",
      "b": "2026-03-31"
    },
    "a_top": [
      {
        "name": "COLT Mortgage Loan Trust, Series 2022-1, Class A1",
        "value": "5073864.87",
        "weight": "0.02456552",
        "shared": false
      },
      {
        "name": "ERAC USA Finance LLC",
        "value": "3999109.20",
        "weight": "0.01936201",
        "shared": false
      },
      {
        "name": "Phillips 66",
        "value": "3997318.00",
        "weight": "0.01935333",
        "shared": false
      },
      {
        "name": "Sherwin-Williams Co/The",
        "value": "3991048.00",
        "weight": "0.01932298",
        "shared": false
      },
      {
        "name": "Penske Truck Leasing Co. L.P.",
        "value": "3987568.00",
        "weight": "0.01930613",
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      },
      {
        "name": "Entergy Corp",
        "value": "3970834.80",
        "weight": "0.01922511",
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      },
      {
        "name": "Amcor Flexibles North America Inc",
        "value": "2997309.30",
        "weight": "0.01451171",
        "shared": false
      },
      {
        "name": "Fidelity National Information Services Inc",
        "value": "2996998.80",
        "weight": "0.01451021",
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      },
      {
        "name": "Enbridge US Inc",
        "value": "2989800.00",
        "weight": "0.01447536",
        "shared": false
      },
      {
        "name": "Oak Street Investment Grade Net Lease Fund, Series 2021-1A, Class A1",
        "value": "2977645.82",
        "weight": "0.01441651",
        "shared": false
      },
      {
        "name": "Avis Budget Rental Car Funding AESOP LLC",
        "value": "2816545.56",
        "weight": "0.01363653",
        "shared": false
      },
      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES .875% 01/15/2029",
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        "weight": "0.01361765",
        "shared": true
      },
      {
        "name": "EART 2022-2A D",
        "value": "2723575.36",
        "weight": "0.01318641",
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      },
      {
        "name": "GREATAMERICA LEASING RECEIVABL GALC 2024 1 A3 144A",
        "value": "2715606.01",
        "weight": "0.01314782",
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      },
      {
        "name": "Verizon Master Trust",
        "value": "2698407.81",
        "weight": "0.01306456",
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      },
      {
        "name": "CPS Auto Receivables Trust 2021-C",
        "value": "2571852.11",
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      },
      {
        "name": "SMB Private Education Loan Trust 2015-A",
        "value": "2506293.58",
        "weight": "0.01213442",
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      },
      {
        "name": "WLAKE 2025-3A A2 144A 4.31% 04-17-28",
        "value": "2408943.76",
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      },
      {
        "name": "U.S. Treasury Inflation-Linked Notes",
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      {
        "name": "NAVSL 2021-A A 144A 0.84% 05-15-69",
        "value": "2283918.99",
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      },
      {
        "name": "COMM Mortgage Trust, Series 2015-LC19, Class D",
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        "weight": "0.01096922",
        "shared": false
      },
      {
        "name": "SMB Asset-Backed Repackaging Trust 2024-R1",
        "value": "2208065.77",
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      {
        "name": "iShares Ultra Short Duration Bond Active ETF",
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      {
        "name": "Octane Receivables Trust, Series 2022-2A, Class C",
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        "weight": "0.01045218",
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      },
      {
        "name": "American Credit Acceptance Receivables Trust, Series 2024-2, Class C",
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      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES 0-5/8% 07/15/2032",
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        "shared": true
      },
      {
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      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES 1.375 07/15/33",
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      {
        "name": "TRICOLOR AUTO SECURITIZATION TRUST TAST 2025-2A A",
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      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES 1.125% 01/15/2033",
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      {
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      {
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      {
        "name": "U.S. Treasury Notes",
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      {
        "name": "OAK STREET INVESTMENT GRADE NET LEASE FUND SERIES OAKIG 2020-1A A1",
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      },
      {
        "name": "Regatta XXIII Funding Ltd.",
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        "name": "U.S. Treasury Inflation-Protected Indexed Notes",
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      {
        "name": "U.S. Treasury Notes",
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        "name": "RCKT TRUST RCKTL 2025 2A A 144A",
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      {
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        "name": "FIXED INC CLEARING CORP.REPO",
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        "name": "U.S. Treasury Notes",
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      {
        "name": "Bell Telephone Co of Canada or Bell Canada/The",
        "value": "1489892.25",
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    ],
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        "name": "U.S. Treasury Inflation-Protected Indexed Notes",
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      {
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      {
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      {
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      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES 3-3/8% 04/15/32",
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      {
        "name": "UNITED STATES TREASURY INFLATION INDEXED BONDS I/L 2.375% 02-15-56",
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      {
        "name": "U.S. Treasury Inflation Linked Bonds",
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    ]
  },
  "error": null,
  "sources": [
    {
      "label": "N-PORT (fund A)",
      "accession_no": "0001410368-26-053553",
      "as_of": "2026-03-31",
      "edgar_url": "https://www.sec.gov/Archives/edgar/data/927972/000141036826053553/0001410368-26-053553-index.htm"
    },
    {
      "label": "N-PORT (fund B)",
      "accession_no": "0000035402-26-003383",
      "as_of": "2026-03-31",
      "edgar_url": "https://www.sec.gov/Archives/edgar/data/35315/000003540226003383/0000035402-26-003383-index.htm"
    }
  ]
}