{
  "page": "compare",
  "query": {
    "a": "VTIP",
    "b": "RRPAX"
  },
  "retrieved_at": "2026-07-07T17:59:29+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": "VANGUARD SHORT-TERM INFLATION-PROTECTED SECURITIES INDEX FUND",
    "ticker": "VTIP",
    "slug": "VTIP",
    "series_id": "S000038501",
    "html_url": "https://fundwatcher.app/funds/VTIP/"
  },
  "fund_b": {
    "name": "SIIT REAL RETURN FUND",
    "ticker": "RRPAX",
    "slug": "RRPAX",
    "series_id": "S000013606",
    "html_url": "https://fundwatcher.app/funds/RRPAX/"
  },
  "overlap": {
    "coverage_a_by_b": "0.8179533852960554970539668418",
    "coverage_b_by_a": "0.8179533852960554970539668418",
    "shared_count": 20,
    "as_of": {
      "a": "2026-03-31",
      "b": "2026-02-28"
    },
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      },
      {
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      },
      {
        "name": "U.S. Treasury Inflation-Protected Indexed Notes",
        "value": "3485125501.61",
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      },
      {
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      },
      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES 2.375% 10/15/2028",
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      },
      {
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      },
      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES 0-1/8% 04/15/2027",
        "value": "3162139708.61",
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      },
      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES 1.250 04/15/2028",
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      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES 0-1/8% 10/15/2026",
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        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES 0-1/8% 01/15/2031",
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      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES .125 07/15/2030",
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      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES 0-1/2% 01/15/2028",
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      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES 0-3/8% 07/15/2027",
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      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES 0-1/8%  07/15/2026",
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      },
      {
        "name": "U.S. Treasury Inflation-Protected Security 0.375%, due 01/15/27",
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      },
      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES 0-3/4% 07/15/2028",
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      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES .25%  07/15/29",
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      },
      {
        "name": "U.S. Treasury Notes",
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      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES .875% 01/15/2029",
        "value": "2143121343.87",
        "weight": "0.03266835",
        "shared": true
      },
      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES 3-7/8% 04/15/29",
        "value": "1503389783.97",
        "weight": "0.02291670",
        "shared": true
      },
      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES 2-3/8% 01/15/27",
        "value": "1285235292.45",
        "weight": "0.01959129",
        "shared": false
      },
      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES 3-5/8% 04/15/28",
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      },
      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES 1-3/4% 01/15/28",
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      },
      {
        "name": "Vanguard Market Liquidity Fund",
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    "b_top": [
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        "name": "U.S. Treasury Inflation-Linked Notes",
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      },
      {
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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": "U.S. TREASURY INFLATION-PROTECTED SECURITIES 2.375% 10/15/2028",
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        "shared": true
      },
      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES 1-5/8% 10/15/27",
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      },
      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES 1.250 04/15/2028",
        "value": "15910486.10",
        "weight": "0.05833360",
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      },
      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES 0-1/8% 01/15/2031",
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        "weight": "0.05831969",
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      },
      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES 0-1/8% 04/15/2027",
        "value": "15866672.04",
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      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES .125 07/15/2030",
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      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES 0-1/2% 01/15/2028",
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        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES 0-3/8% 07/15/2027",
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      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES .25%  07/15/29",
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        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES .875% 01/15/2029",
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      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES 3-7/8% 04/15/29",
        "value": "7556436.55",
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      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES 3-5/8% 04/15/28",
        "value": "6386832.01",
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      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES 1-3/4% 01/15/28",
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      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES 2-1/2% 01/15/29",
        "value": "5692878.06",
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    ]
  },
  "error": null,
  "sources": [
    {
      "label": "N-PORT (fund A)",
      "accession_no": "0000836906-26-000273",
      "as_of": "2026-03-31",
      "edgar_url": "https://www.sec.gov/Archives/edgar/data/836906/000083690626000273/0000836906-26-000273-index.htm"
    },
    {
      "label": "N-PORT (fund B)",
      "accession_no": "0002048251-26-003450",
      "as_of": "2026-02-28",
      "edgar_url": "https://www.sec.gov/Archives/edgar/data/939934/000204825126003450/0002048251-26-003450-index.htm"
    }
  ]
}