{
  "page": "compare",
  "query": {
    "a": "TIPD",
    "b": "SPIP"
  },
  "retrieved_at": "2026-07-07T17:04:33+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": "Northern Trust 2055 Inflation-Linked Distributing Ladder ETF",
    "ticker": "TIPD",
    "slug": "TIPD",
    "series_id": "S000093509",
    "html_url": "https://fundwatcher.app/funds/TIPD/"
  },
  "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": "0.4430323147632758123557129687",
    "coverage_b_by_a": "0.4430323147632758123557129688",
    "shared_count": 26,
    "as_of": {
      "a": "2026-03-31",
      "b": "2026-03-31"
    },
    "a_top": [
      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES 2 1/8% 02/15/40",
        "value": "369622.20",
        "weight": "0.09273659",
        "shared": true
      },
      {
        "name": "U.S. Treasury Inflation-Protected Indexed Bonds",
        "value": "360670.14",
        "weight": "0.09049056",
        "shared": true
      },
      {
        "name": "U.S. Treasury Inflation-Protected Indexed Notes",
        "value": "261440.17",
        "weight": "0.06559419",
        "shared": true
      },
      {
        "name": "U.S. Treasury Notes",
        "value": "252998.24",
        "weight": "0.06347615",
        "shared": true
      },
      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES .125 07/15/2030",
        "value": "152137.18",
        "weight": "0.03817055",
        "shared": true
      },
      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES 0-1/8% 10/15/2026",
        "value": "151265.49",
        "weight": "0.03795185",
        "shared": true
      },
      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES 1-3/8% 02/15/2044",
        "value": "145237.18",
        "weight": "0.03643937",
        "shared": true
      },
      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES 0-1/8% 07/15/2031",
        "value": "142849.69",
        "weight": "0.03584036",
        "shared": true
      },
      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES 1-5/8% 10/15/27",
        "value": "140477.38",
        "weight": "0.03524516",
        "shared": true
      },
      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES 0-3/4% 02/15/2042",
        "value": "139667.03",
        "weight": "0.03504185",
        "shared": true
      },
      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES 2.375% 10/15/2028",
        "value": "138507.01",
        "weight": "0.03475080",
        "shared": true
      },
      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES 0-5/8% 07/15/2032",
        "value": "133071.57",
        "weight": "0.03338707",
        "shared": true
      },
      {
        "name": "U.S. Treasury Inflation-Protected Indexed Notes",
        "value": "132288.71",
        "weight": "0.03319066",
        "shared": true
      },
      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES 1.375 07/15/33",
        "value": "131896.14",
        "weight": "0.03309216",
        "shared": true
      },
      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES 0-5/8% 02/15/2043",
        "value": "131259.56",
        "weight": "0.03293245",
        "shared": true
      },
      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES 1% 02/15/46",
        "value": "128220.61",
        "weight": "0.03216999",
        "shared": true
      },
      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES 0-3/4% 02/15/2045",
        "value": "124965.24",
        "weight": "0.03135323",
        "shared": true
      },
      {
        "name": "U.S. Treasury Inflation-Protected Indexed Bonds",
        "value": "120685.59",
        "weight": "0.03027949",
        "shared": true
      },
      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES 0-7/8% 02/15/2047",
        "value": "120366.03",
        "weight": "0.03019931",
        "shared": true
      },
      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES 1% 02/15/48",
        "value": "119323.24",
        "weight": "0.02993768",
        "shared": true
      },
      {
        "name": "U.S. Treasury Inflation-Protected Notes 2.125%, Due 02/15/2054",
        "value": "117684.18",
        "weight": "0.02952645",
        "shared": true
      },
      {
        "name": "U.S. Treasury Inflation Linked Bonds",
        "value": "115236.56",
        "weight": "0.02891235",
        "shared": true
      },
      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES 1.50% 2/15/2053",
        "value": "105641.27",
        "weight": "0.02650493",
        "shared": true
      },
      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES 0.25% 02/15/2050",
        "value": "90172.83",
        "weight": "0.02262397",
        "shared": true
      },
      {
        "name": "U.S. Treasury Inflation-Protected Indexed Bonds",
        "value": "83662.16",
        "weight": "0.02099047",
        "shared": true
      },
      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES 0-1/8%  02/15/2052",
        "value": "76375.84",
        "weight": "0.01916236",
        "shared": true
      }
    ],
    "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": false
      },
      {
        "name": "U.S. Treasury Notes",
        "value": "32361977.56",
        "weight": "0.03251155",
        "shared": false
      },
      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES 0-1/8%  01/15/32",
        "value": "31422664.56",
        "weight": "0.03156789",
        "shared": false
      },
      {
        "name": "U.S. Treasury Inflation-Protected Notes 1.75%, Due 01/15/2034",
        "value": "31399010.14",
        "weight": "0.03154413",
        "shared": false
      },
      {
        "name": "U.S. Treasury Inflation-Linked Notes",
        "value": "31036021.30",
        "weight": "0.03117946",
        "shared": false
      },
      {
        "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",
        "weight": "0.02981868",
        "shared": false
      },
      {
        "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": false
      },
      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES .125 07/15/2030",
        "value": "28964958.59",
        "weight": "0.02909883",
        "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": false
      },
      {
        "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": false
      },
      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES 1.125% 01/15/2033",
        "value": "27565679.17",
        "weight": "0.02769308",
        "shared": false
      },
      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES 0-1/8% 01/15/2031",
        "value": "27165896.67",
        "weight": "0.02729145",
        "shared": false
      },
      {
        "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": false
      },
      {
        "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": false
      },
      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES .875% 01/15/2029",
        "value": "23172078.52",
        "weight": "0.02327918",
        "shared": false
      },
      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES 0-1/8% 04/15/2027",
        "value": "23121747.56",
        "weight": "0.02322861",
        "shared": false
      },
      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES 1.250 04/15/2028",
        "value": "22625103.88",
        "weight": "0.02272967",
        "shared": false
      },
      {
        "name": "U.S. TREASURY INFLATION-PROTECTED SECURITIES 3-7/8% 04/15/29",
        "value": "21667566.19",
        "weight": "0.02176771",
        "shared": false
      },
      {
        "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": false
      },
      {
        "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": false
      },
      {
        "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": false
      },
      {
        "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": false
      },
      {
        "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": true
      }
    ]
  },
  "error": null,
  "sources": [
    {
      "label": "N-PORT (fund A)",
      "accession_no": "0002071691-26-012333",
      "as_of": "2026-03-31",
      "edgar_url": "https://www.sec.gov/Archives/edgar/data/916620/000207169126012333/0002071691-26-012333-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"
    }
  ]
}