{
  "page": "compare",
  "query": {
    "a": "PIPIX",
    "b": "SPIP"
  },
  "retrieved_at": "2026-07-07T16:07:26+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": "Inflation Protection Fund",
    "ticker": "PIPIX",
    "slug": "PIPIX",
    "series_id": "S000006997",
    "html_url": "https://fundwatcher.app/funds/PIPIX/"
  },
  "fund_b": {
    "name": "State Street(R) SPDR(R) Portfolio TIPS ETF",
    "ticker": "SPIP",
    "slug": "SPIP",
    "series_id": "S000017330",
    "html_url": "https://fundwatcher.app/funds/SPIP/"
  },
  "overlap": {
    "coverage_a_by_b": "0.8557846134154750843347522577",
    "coverage_b_by_a": "0.8557846134154750843347522577",
    "shared_count": 46,
    "as_of": {
      "a": "2026-01-31",
      "b": "2026-03-31"
    },
    "a_top": [
      {
        "name": "Principal Government Money Market Fund - Class R-6",
        "value": "120822440.33",
        "weight": "0.05403792",
        "shared": false
      },
      {
        "name": "U.S. Treasury Inflation-Protected Indexed Notes",
        "value": "98231027.77",
        "weight": "0.04393390",
        "shared": true
      },
      {
        "name": "U.S. Treasury Notes",
        "value": "95453677.54",
        "weight": "0.04269173",
        "shared": true
      },
      {
        "name": "U.S. Treasury Inflation-Protected Indexed Notes",
        "value": "84235525.30",
        "weight": "0.03767440",
        "shared": true
      },
      {
        "name": "U.S. Treasury Inflation-Protected Notes 1.75%, Due 01/15/2034",
        "value": "82449017.83",
        "weight": "0.03687538",
        "shared": true
      },
      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES 0-5/8% 07/15/2032",
        "value": "75613478.48",
        "weight": "0.03381818",
        "shared": true
      },
      {
        "name": "U.S. Treasury Inflation-Linked Notes",
        "value": "75337704.98",
        "weight": "0.03369484",
        "shared": true
      },
      {
        "name": "U.S. Treasury Inflation-Protected Indexed Notes",
        "value": "74610586.43",
        "weight": "0.03336964",
        "shared": true
      },
      {
        "name": "U.S. Treasury Notes",
        "value": "73540575.49",
        "weight": "0.03289108",
        "shared": true
      },
      {
        "name": "U.S. Treasury Notes",
        "value": "72614600.05",
        "weight": "0.03247693",
        "shared": true
      },
      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES 0-1/8%  01/15/32",
        "value": "71573874.88",
        "weight": "0.03201147",
        "shared": true
      },
      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES 1.250 04/15/2028",
        "value": "71011807.79",
        "weight": "0.03176008",
        "shared": true
      },
      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES 2.375% 10/15/2028",
        "value": "69752118.41",
        "weight": "0.03119669",
        "shared": true
      },
      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES 1.125% 01/15/2033",
        "value": "69391885.66",
        "weight": "0.03103557",
        "shared": true
      },
      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES 1.375 07/15/33",
        "value": "67770923.42",
        "weight": "0.03031059",
        "shared": true
      },
      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES 0-1/8% 07/15/2031",
        "value": "65696358.11",
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        "shared": true
      },
      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES .125 07/15/2030",
        "value": "65363289.65",
        "weight": "0.02923378",
        "shared": true
      },
      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES 0-1/8% 01/15/2031",
        "value": "63160111.31",
        "weight": "0.02824841",
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      },
      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES 0-1/2% 01/15/2028",
        "value": "61552129.28",
        "weight": "0.02752923",
        "shared": true
      },
      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES 0-3/4% 07/15/2028",
        "value": "56216876.81",
        "weight": "0.02514304",
        "shared": true
      },
      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES 1-5/8% 10/15/27",
        "value": "55430151.60",
        "weight": "0.02479118",
        "shared": true
      },
      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES .25%  07/15/29",
        "value": "53489332.61",
        "weight": "0.02392314",
        "shared": true
      },
      {
        "name": "U.S. Treasury Notes 0.125%, Due 1/15/2030",
        "value": "53441557.38",
        "weight": "0.02390178",
        "shared": true
      },
      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES .875% 01/15/2029",
        "value": "44142277.03",
        "weight": "0.01974267",
        "shared": true
      },
      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES 0-3/8% 07/15/2027",
        "value": "42827324.72",
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        "shared": true
      },
      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES 0-3/4% 02/15/2042",
        "value": "31727002.43",
        "weight": "0.01418992",
        "shared": true
      },
      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES 3-7/8% 04/15/29",
        "value": "31614908.41",
        "weight": "0.01413979",
        "shared": true
      },
      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES 1-3/8% 02/15/2044",
        "value": "29490287.82",
        "weight": "0.01318955",
        "shared": true
      },
      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES 3-5/8% 04/15/28",
        "value": "29187840.10",
        "weight": "0.01305428",
        "shared": true
      },
      {
        "name": "U.S. Treasury Inflation-Protected Notes 2.125%, Due 02/15/2054",
        "value": "27204799.37",
        "weight": "0.01216737",
        "shared": true
      },
      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES 2-1/2% 01/15/29",
        "value": "25801703.66",
        "weight": "0.01153983",
        "shared": true
      },
      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES 0-3/4% 02/15/2045",
        "value": "25545028.54",
        "weight": "0.01142503",
        "shared": true
      },
      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES 1-3/4% 01/15/28",
        "value": "21669948.40",
        "weight": "0.00969190",
        "shared": true
      },
      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES 1.50% 2/15/2053",
        "value": "20567516.77",
        "weight": "0.00919884",
        "shared": true
      },
      {
        "name": "U.S. Treasury Inflation-Protected Indexed Bonds",
        "value": "20243069.29",
        "weight": "0.00905373",
        "shared": true
      },
      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES 0-5/8% 02/15/2043",
        "value": "19701809.50",
        "weight": "0.00881165",
        "shared": true
      },
      {
        "name": "U.S. Treasury Inflation-Protected Indexed Bonds",
        "value": "17181225.51",
        "weight": "0.00768432",
        "shared": true
      },
      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES 0-1/8%  02/15/2052",
        "value": "16075030.03",
        "weight": "0.00718957",
        "shared": true
      },
      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES 0-7/8% 02/15/2047",
        "value": "15803388.00",
        "weight": "0.00706808",
        "shared": true
      },
      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES 1% 02/15/46",
        "value": "15366731.99",
        "weight": "0.00687278",
        "shared": true
      },
      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES 0.25% 02/15/2050",
        "value": "14572428.80",
        "weight": "0.00651753",
        "shared": true
      },
      {
        "name": "U.S. Treasury Inflation-Protected Indexed Bonds",
        "value": "13412421.61",
        "weight": "0.00599872",
        "shared": true
      },
      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES 1% 02/15/48",
        "value": "13109962.72",
        "weight": "0.00586344",
        "shared": true
      },
      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES 3-3/8% 04/15/32",
        "value": "12790942.35",
        "weight": "0.00572076",
        "shared": true
      },
      {
        "name": "U.S. Treasury Inflation Linked Bonds",
        "value": "11943229.13",
        "weight": "0.00534162",
        "shared": true
      },
      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES 0-1/8% 04/15/2027",
        "value": "7839879.64",
        "weight": "0.00350639",
        "shared": true
      },
      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES 2 1/8% 02/15/40",
        "value": "4174571.51",
        "weight": "0.00186708",
        "shared": true
      },
      {
        "name": "Progress Residential 2022-SFR7 Trust",
        "value": "3317945.25",
        "weight": "0.00148395",
        "shared": false
      },
      {
        "name": "Barclays Mortgage Loan Trust, Series 2025-NQM3, Class A1",
        "value": "2468085.51",
        "weight": "0.00110385",
        "shared": false
      },
      {
        "name": "HOMES Trust, Series 2025-AFC2, Class A1A",
        "value": "2451030.86",
        "weight": "0.00109623",
        "shared": false
      }
    ],
    "b_top": [
      {
        "name": "U.S. Treasury Inflation-Protected Indexed Notes",
        "value": "34716863.16",
        "weight": "0.03487732",
        "shared": true
      },
      {
        "name": "U.S. Treasury Notes",
        "value": "33499927.47",
        "weight": "0.03365476",
        "shared": true
      },
      {
        "name": "U.S. Treasury Inflation-Protected Indexed Notes",
        "value": "33015694.81",
        "weight": "0.03316829",
        "shared": true
      },
      {
        "name": "U.S. Treasury Notes",
        "value": "32361977.56",
        "weight": "0.03251155",
        "shared": true
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      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES 0-1/8%  01/15/32",
        "value": "31422664.56",
        "weight": "0.03156789",
        "shared": true
      },
      {
        "name": "U.S. Treasury Inflation-Protected Notes 1.75%, Due 01/15/2034",
        "value": "31399010.14",
        "weight": "0.03154413",
        "shared": true
      },
      {
        "name": "U.S. Treasury Inflation-Linked Notes",
        "value": "31036021.30",
        "weight": "0.03117946",
        "shared": true
      },
      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES 0-1/8% 07/15/2031",
        "value": "30582014.00",
        "weight": "0.03072336",
        "shared": true
      },
      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES 0-1/2% 01/15/2028",
        "value": "29681495.19",
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        "shared": true
      },
      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES 0-5/8% 07/15/2032",
        "value": "29476193.62",
        "weight": "0.02961243",
        "shared": true
      },
      {
        "name": "U.S. Treasury Notes",
        "value": "29136859.52",
        "weight": "0.02927153",
        "shared": true
      },
      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES .125 07/15/2030",
        "value": "28964958.59",
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        "shared": true
      },
      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES 2.375% 10/15/2028",
        "value": "28959327.36",
        "weight": "0.02909317",
        "shared": true
      },
      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES .25%  07/15/29",
        "value": "28527139.08",
        "weight": "0.02865899",
        "shared": true
      },
      {
        "name": "U.S. Treasury Inflation-Protected Indexed Notes",
        "value": "28406102.47",
        "weight": "0.02853739",
        "shared": true
      },
      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES 0-3/8% 07/15/2027",
        "value": "28193177.15",
        "weight": "0.02832348",
        "shared": true
      },
      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES 1.125% 01/15/2033",
        "value": "27565679.17",
        "weight": "0.02769308",
        "shared": true
      },
      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES 0-1/8% 01/15/2031",
        "value": "27165896.67",
        "weight": "0.02729145",
        "shared": true
      },
      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES 1-5/8% 10/15/27",
        "value": "26874039.15",
        "weight": "0.02699825",
        "shared": true
      },
      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES 0-3/4% 07/15/2028",
        "value": "26530909.02",
        "weight": "0.02665353",
        "shared": true
      },
      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES 1.375 07/15/33",
        "value": "24913828.16",
        "weight": "0.02502898",
        "shared": true
      },
      {
        "name": "U.S. Treasury Notes 0.125%, Due 1/15/2030",
        "value": "23679467.61",
        "weight": "0.02378891",
        "shared": true
      },
      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES .875% 01/15/2029",
        "value": "23172078.52",
        "weight": "0.02327918",
        "shared": true
      },
      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES 0-1/8% 04/15/2027",
        "value": "23121747.56",
        "weight": "0.02322861",
        "shared": true
      },
      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES 1.250 04/15/2028",
        "value": "22625103.88",
        "weight": "0.02272967",
        "shared": true
      },
      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES 3-7/8% 04/15/29",
        "value": "21667566.19",
        "weight": "0.02176771",
        "shared": true
      },
      {
        "name": "U.S. Treasury Inflation-Protected Indexed Bonds",
        "value": "18438828.05",
        "weight": "0.01852405",
        "shared": true
      },
      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES 3-5/8% 04/15/28",
        "value": "18278261.90",
        "weight": "0.01836274",
        "shared": true
      },
      {
        "name": "State Street Navigator Securities Lending Portfolio II",
        "value": "15990732.48",
        "weight": "0.01606464",
        "shared": false
      },
      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES 1-3/8% 02/15/2044",
        "value": "15123410.10",
        "weight": "0.01519331",
        "shared": true
      },
      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES 0-3/4% 02/15/2042",
        "value": "14801456.99",
        "weight": "0.01486987",
        "shared": true
      },
      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES 0-3/4% 02/15/2045",
        "value": "13943787.52",
        "weight": "0.01400823",
        "shared": true
      },
      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES 1-3/4% 01/15/28",
        "value": "13432595.41",
        "weight": "0.01349468",
        "shared": true
      },
      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES 2 1/8% 02/15/40",
        "value": "13306987.07",
        "weight": "0.01336849",
        "shared": true
      },
      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES 2-1/2% 01/15/29",
        "value": "13210099.90",
        "weight": "0.01327115",
        "shared": true
      },
      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES 0-5/8% 02/15/2043",
        "value": "12853097.29",
        "weight": "0.01291250",
        "shared": true
      },
      {
        "name": "U.S. Treasury Inflation-Indexed Notes",
        "value": "12680991.00",
        "weight": "0.01273960",
        "shared": false
      },
      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES 1% 02/15/46",
        "value": "11167880.18",
        "weight": "0.01121950",
        "shared": true
      },
      {
        "name": "U.S. Treasury Inflation-Protected Indexed Bonds",
        "value": "10739749.69",
        "weight": "0.01078939",
        "shared": true
      },
      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES 0-7/8% 02/15/2047",
        "value": "9821984.51",
        "weight": "0.00986738",
        "shared": true
      },
      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES 1% 02/15/48",
        "value": "9264000.12",
        "weight": "0.00930682",
        "shared": true
      },
      {
        "name": "U.S. Treasury Inflation-Protected Notes 2.125%, Due 02/15/2054",
        "value": "8700744.66",
        "weight": "0.00874096",
        "shared": true
      },
      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES 1.50% 2/15/2053",
        "value": "8410266.72",
        "weight": "0.00844914",
        "shared": true
      },
      {
        "name": "U.S. Treasury Inflation Linked Bonds",
        "value": "8128643.04",
        "weight": "0.00816621",
        "shared": true
      },
      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES 0.25% 02/15/2050",
        "value": "6834935.73",
        "weight": "0.00686653",
        "shared": true
      },
      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES 0-1/8%  02/15/2052",
        "value": "6746157.89",
        "weight": "0.00677734",
        "shared": true
      },
      {
        "name": "U.S. Treasury Inflation-Protected Indexed Bonds",
        "value": "6318928.71",
        "weight": "0.00634813",
        "shared": true
      },
      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES 3-3/8% 04/15/32",
        "value": "6136518.02",
        "weight": "0.00616488",
        "shared": true
      },
      {
        "name": "UNITED STATES TREASURY INFLATION INDEXED BONDS I/L 2.375% 02-15-56",
        "value": "4373628.13",
        "weight": "0.00439384",
        "shared": false
      },
      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES 0-1/8% 10/15/2026",
        "value": "0.03",
        "weight": "0.00000000",
        "shared": false
      }
    ]
  },
  "error": null,
  "sources": [
    {
      "label": "N-PORT (fund A)",
      "accession_no": "0000898745-26-000443",
      "as_of": "2026-01-31",
      "edgar_url": "https://www.sec.gov/Archives/edgar/data/898745/000089874526000443/0000898745-26-000443-index.htm"
    },
    {
      "label": "N-PORT (fund B)",
      "accession_no": "0001410368-26-055586",
      "as_of": "2026-03-31",
      "edgar_url": "https://www.sec.gov/Archives/edgar/data/1064642/000141036826055586/0001410368-26-055586-index.htm"
    }
  ]
}