{
  "page": "compare",
  "query": {
    "a": "IBTP",
    "b": "IEF"
  },
  "retrieved_at": "2026-07-07T15:56:54+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": "iShares iBonds Dec 2034 Term Treasury ETF",
    "ticker": "IBTP",
    "slug": "IBTP",
    "series_id": "S000085229",
    "html_url": "https://fundwatcher.app/funds/IBTP/"
  },
  "fund_b": {
    "name": "iShares 7-10 Year Treasury Bond ETF",
    "ticker": "IEF",
    "slug": "IEF",
    "series_id": "S000004358",
    "html_url": "https://fundwatcher.app/funds/IEF/"
  },
  "overlap": {
    "coverage_a_by_b": "0.3403960125303311007109767887",
    "coverage_b_by_a": "0.3403960125303311007109767887",
    "shared_count": 5,
    "as_of": {
      "a": "2026-01-31",
      "b": "2026-02-28"
    },
    "a_top": [
      {
        "name": "US TREASURY N/B",
        "value": "58555512.00",
        "weight": "0.25480081",
        "shared": true
      },
      {
        "name": "US TREASURY N/B",
        "value": "57947878.26",
        "weight": "0.25215673",
        "shared": true
      },
      {
        "name": "US TREASURY N/B",
        "value": "56872591.02",
        "weight": "0.24747768",
        "shared": true
      },
      {
        "name": "US TREASURY N/B",
        "value": "56412985.99",
        "weight": "0.24547774",
        "shared": true
      },
      {
        "name": "BlackRock Cash Funds: Treasury, SL Agency Shares",
        "value": "20000.00",
        "weight": "0.00008703",
        "shared": true
      }
    ],
    "b_top": [
      {
        "name": "US TREASURY N/B",
        "value": "4308063870.12",
        "weight": "0.08894838",
        "shared": true
      },
      {
        "name": "US TREASURY N/B",
        "value": "4280386544.20",
        "weight": "0.08837693",
        "shared": true
      },
      {
        "name": "US TREASURY N/B",
        "value": "4274053552.04",
        "weight": "0.08824617",
        "shared": false
      },
      {
        "name": "US TREASURY N/B",
        "value": "4258021119.95",
        "weight": "0.08791515",
        "shared": false
      },
      {
        "name": "US TREASURY N/B",
        "value": "4257716014.63",
        "weight": "0.08790885",
        "shared": false
      },
      {
        "name": "US TREASURY N/B",
        "value": "4212501504.04",
        "weight": "0.08697531",
        "shared": true
      },
      {
        "name": "US TREASURY N/B",
        "value": "4169060510.44",
        "weight": "0.08607839",
        "shared": false
      },
      {
        "name": "US TREASURY N/B",
        "value": "4014072917.26",
        "weight": "0.08287837",
        "shared": false
      },
      {
        "name": "US TREASURY N/B",
        "value": "3681335701.72",
        "weight": "0.07600836",
        "shared": true
      },
      {
        "name": "US TREASURY N/B",
        "value": "3530803734.26",
        "weight": "0.07290033",
        "shared": false
      },
      {
        "name": "US TREASURY N/B",
        "value": "3115594959.08",
        "weight": "0.06432754",
        "shared": false
      },
      {
        "name": "US TREASURY N/B",
        "value": "2234043547.06",
        "weight": "0.04612619",
        "shared": false
      },
      {
        "name": "US TREASURY N/B",
        "value": "730667345.63",
        "weight": "0.01508605",
        "shared": false
      },
      {
        "name": "US TREASURY N/B",
        "value": "723875256.33",
        "weight": "0.01494582",
        "shared": false
      },
      {
        "name": "BlackRock Cash Funds: Treasury, SL Agency Shares",
        "value": "642438189.28",
        "weight": "0.01326439",
        "shared": true
      },
      {
        "name": "US TREASURY N/B",
        "value": "569854.83",
        "weight": "0.00001177",
        "shared": false
      },
      {
        "name": "US TREASURY N/B",
        "value": "71955.00",
        "weight": "0.00000149",
        "shared": false
      },
      {
        "name": "US TREASURY N/B",
        "value": "15771.84",
        "weight": "0.00000033",
        "shared": false
      },
      {
        "name": "US TREASURY N/B",
        "value": "6569.06",
        "weight": "0.00000014",
        "shared": false
      },
      {
        "name": "US TREASURY N/B",
        "value": "2607.31",
        "weight": "0.00000005",
        "shared": false
      }
    ]
  },
  "error": null,
  "sources": [
    {
      "label": "N-PORT (fund A)",
      "accession_no": "0001410368-26-031709",
      "as_of": "2026-01-31",
      "edgar_url": "https://www.sec.gov/Archives/edgar/data/1100663/000141036826031709/0001410368-26-031709-index.htm"
    },
    {
      "label": "N-PORT (fund B)",
      "accession_no": "0002071691-26-008199",
      "as_of": "2026-02-28",
      "edgar_url": "https://www.sec.gov/Archives/edgar/data/1100663/000207169126008199/0002071691-26-008199-index.htm"
    }
  ]
}