{
  "page": "compare",
  "query": {
    "a": "FBIIX",
    "b": "IAGG"
  },
  "retrieved_at": "2026-07-07T18:10:28+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": "Fidelity International Bond Index Fund",
    "ticker": "FBIIX",
    "slug": "FBIIX",
    "series_id": "S000066711",
    "html_url": "https://fundwatcher.app/funds/FBIIX/"
  },
  "fund_b": {
    "name": "iShares Core International Aggregate Bond ETF",
    "ticker": "IAGG",
    "slug": "IAGG",
    "series_id": "S000051261",
    "html_url": "https://fundwatcher.app/funds/IAGG/"
  },
  "overlap": {
    "coverage_a_by_b": "0.2379139288386823829508273817",
    "coverage_b_by_a": "0.2379139288386823829508273811",
    "shared_count": 1337,
    "as_of": {
      "a": "2026-03-31",
      "b": "2026-01-31"
    },
    "a_top": [
      {
        "name": "GERMANY FEDERAL REPUBLIC OF 2.2% 10/10/2030 REGS",
        "value": "19598143.61",
        "weight": "0.01589814",
        "shared": true
      },
      {
        "name": "SPTR TRS EQUITY SOFR+70 BOA",
        "value": "19263589.84",
        "weight": "0.01562674",
        "shared": false
      },
      {
        "name": "United Kingdom of Great Britain and Northern Ireland",
        "value": "17649391.56",
        "weight": "0.01431730",
        "shared": true
      },
      {
        "name": "French Republic Government Bonds OAT",
        "value": "14421988.96",
        "weight": "0.01169921",
        "shared": true
      },
      {
        "name": "GERMANY FEDERAL REPUBLIC OF 2.6% 08/15/2035 REGS",
        "value": "13332070.12",
        "weight": "0.01081506",
        "shared": true
      },
      {
        "name": "JAPAN GOVT 10-YR",
        "value": "11713989.48",
        "weight": "0.00950246",
        "shared": true
      },
      {
        "name": "UNITED KINGDOM GILT GBP REG S 4.375% 03-07-30",
        "value": "11088622.95",
        "weight": "0.00899516",
        "shared": true
      },
      {
        "name": "JAPAN GOVT 20-YR",
        "value": "9503315.86",
        "weight": "0.00770915",
        "shared": true
      },
      {
        "name": "GERMANY FEDERAL REPUBLIC OF 2.5% 08/15/2046 REGS",
        "value": "9250072.91",
        "weight": "0.00750372",
        "shared": true
      },
      {
        "name": "UNITED KINGDOM GILT GBP REG S 3.5% 01-22-45",
        "value": "9076188.83",
        "weight": "0.00736266",
        "shared": true
      },
      {
        "name": "French Republic Government Bonds OAT",
        "value": "8682009.48",
        "weight": "0.00704290",
        "shared": true
      },
      {
        "name": "French Republic Government Bonds OAT",
        "value": "8497666.29",
        "weight": "0.00689336",
        "shared": true
      },
      {
        "name": "French Republic Government Bonds OAT",
        "value": "8470738.77",
        "weight": "0.00687152",
        "shared": true
      },
      {
        "name": "Bundesrepublik Deutschland Bundesanleihe",
        "value": "8125325.55",
        "weight": "0.00659131",
        "shared": false
      },
      {
        "name": "French Republic Government Bonds OAT",
        "value": "8029034.64",
        "weight": "0.00651320",
        "shared": true
      },
      {
        "name": "GERMANY FEDERAL REPUBLIC OF 1.7% 08/15/2032 REGS",
        "value": "7561640.44",
        "weight": "0.00613405",
        "shared": true
      },
      {
        "name": "JAPAN GOVT 10-YR",
        "value": "7447452.37",
        "weight": "0.00604142",
        "shared": true
      },
      {
        "name": "JAPAN GOVT 40-YR",
        "value": "7357200.35",
        "weight": "0.00596821",
        "shared": true
      },
      {
        "name": "Bundesobligation",
        "value": "7112683.49",
        "weight": "0.00576985",
        "shared": false
      },
      {
        "name": "Segretariato Generale Della Presidenza Della Repubblica",
        "value": "6950592.20",
        "weight": "0.00563836",
        "shared": true
      },
      {
        "name": "ITALY REPUBLIC OF 2.65% 06/15/2028 REGS",
        "value": "6941303.60",
        "weight": "0.00563083",
        "shared": true
      },
      {
        "name": "ITALY REPUBLIC OF 3.45% 07/15/2027 REGS",
        "value": "6737630.24",
        "weight": "0.00546561",
        "shared": false
      },
      {
        "name": "Gouvernement De France",
        "value": "6345017.26",
        "weight": "0.00514712",
        "shared": true
      },
      {
        "name": "Canadian Government Bond",
        "value": "6251789.68",
        "weight": "0.00507149",
        "shared": true
      },
      {
        "name": "JAPAN GOVT 10-YR",
        "value": "6250069.22",
        "weight": "0.00507009",
        "shared": true
      },
      {
        "name": "ITALY REPUBLIC OF 3.25% 07/15/2032 144A REGS",
        "value": "6247979.57",
        "weight": "0.00506840",
        "shared": true
      },
      {
        "name": "French Republic Government Bonds OAT",
        "value": "6151848.00",
        "weight": "0.00499042",
        "shared": true
      },
      {
        "name": "SPANISH GOV'T",
        "value": "5994421.44",
        "weight": "0.00486271",
        "shared": true
      },
      {
        "name": "SPANISH GOV'T",
        "value": "5944340.91",
        "weight": "0.00482209",
        "shared": true
      },
      {
        "name": "GERMANY FEDERAL REPUBLIC OF 2% 12/16/2027 REGS",
        "value": "5769402.06",
        "weight": "0.00468017",
        "shared": false
      },
      {
        "name": "SPANISH GOV'T",
        "value": "5745835.00",
        "weight": "0.00466106",
        "shared": true
      },
      {
        "name": "UNITED KINGDOM GILT GBP REG S 1.125% 10-22-73",
        "value": "5571152.24",
        "weight": "0.00451935",
        "shared": true
      },
      {
        "name": "Segretariato Generale Della Presidenza Della Repubblica",
        "value": "5258101.79",
        "weight": "0.00426540",
        "shared": true
      },
      {
        "name": "EUROPEAN UNION 1.875% 05/25/2037 REGS",
        "value": "4909204.24",
        "weight": "0.00398238",
        "shared": false
      },
      {
        "name": "SPANISH GOV'T",
        "value": "4806385.54",
        "weight": "0.00389897",
        "shared": true
      },
      {
        "name": "JAPAN GOVT 10-YR",
        "value": "4781607.19",
        "weight": "0.00387887",
        "shared": true
      },
      {
        "name": "JAPAN GOVT 10-YR",
        "value": "4703387.41",
        "weight": "0.00381542",
        "shared": true
      },
      {
        "name": "Government of Canada",
        "value": "4585137.52",
        "weight": "0.00371949",
        "shared": true
      },
      {
        "name": "GERMANY FEDERAL REPUBLIC OF 2.1% 04/12/2029 REGS",
        "value": "4512431.56",
        "weight": "0.00366051",
        "shared": true
      },
      {
        "name": "JAPAN GOVT  5-YR",
        "value": "4456656.49",
        "weight": "0.00361527",
        "shared": true
      },
      {
        "name": "JAPAN GOVT 20-YR",
        "value": "4306876.75",
        "weight": "0.00349377",
        "shared": true
      },
      {
        "name": "GERMANY FEDERAL REPUBLIC OF 2.3% 02/15/2033 REGS",
        "value": "4260655.45",
        "weight": "0.00345627",
        "shared": true
      },
      {
        "name": "UNITED KINGDOM GILT GBP REG S 4.5% 06-07-28",
        "value": "4219421.95",
        "weight": "0.00342282",
        "shared": true
      },
      {
        "name": "UNITED KINGDOM GILT 4.250000% 07/31/2034",
        "value": "4139439.58",
        "weight": "0.00335794",
        "shared": true
      },
      {
        "name": "SPANISH GOV'T",
        "value": "4124504.95",
        "weight": "0.00334582",
        "shared": true
      },
      {
        "name": "French Republic Government Bonds OAT",
        "value": "4086605.76",
        "weight": "0.00331508",
        "shared": true
      },
      {
        "name": "US DOLLARS",
        "value": "4048752.18",
        "weight": "0.00328437",
        "shared": false
      },
      {
        "name": "French Republic Government Bonds OAT",
        "value": "4039165.03",
        "weight": "0.00327660",
        "shared": true
      },
      {
        "name": "JAPAN GOVT 20-YR",
        "value": "3648153.89",
        "weight": "0.00295940",
        "shared": false
      },
      {
        "name": "ITALY REPUBLIC OF 1.5% 04/30/2045 144A REGS",
        "value": "3629618.27",
        "weight": "0.00294437",
        "shared": true
      }
    ],
    "b_top": [
      {
        "name": "CHINA PEOPLES REPUBLIC OF 2.68% 05/21/2030",
        "value": "89772220.56",
        "weight": "0.00783543",
        "shared": false
      },
      {
        "name": "China Government Bond",
        "value": "73710554.43",
        "weight": "0.00643355",
        "shared": false
      },
      {
        "name": "CHINA GOVT BOND",
        "value": "69526576.48",
        "weight": "0.00606836",
        "shared": false
      },
      {
        "name": "China Government Bond",
        "value": "63507532.28",
        "weight": "0.00554301",
        "shared": false
      },
      {
        "name": "CHINA GOVT BOND",
        "value": "60031208.48",
        "weight": "0.00523960",
        "shared": false
      },
      {
        "name": "China Development Bank",
        "value": "57748806.92",
        "weight": "0.00504039",
        "shared": false
      },
      {
        "name": "China Development Bank",
        "value": "54537624.20",
        "weight": "0.00476011",
        "shared": false
      },
      {
        "name": "CHINA GOVT BOND",
        "value": "51546875.16",
        "weight": "0.00449907",
        "shared": false
      },
      {
        "name": "CHINA GOVT BOND",
        "value": "49440074.23",
        "weight": "0.00431519",
        "shared": false
      },
      {
        "name": "CHINA GOVT BOND",
        "value": "46497900.13",
        "weight": "0.00405839",
        "shared": false
      },
      {
        "name": "CHINA GOVT BOND",
        "value": "46114767.20",
        "weight": "0.00402495",
        "shared": false
      },
      {
        "name": "China Development Bank",
        "value": "43779597.22",
        "weight": "0.00382114",
        "shared": false
      },
      {
        "name": "CHINA GOVT BOND CNY 3.19% 04-15-53",
        "value": "43150718.45",
        "weight": "0.00376625",
        "shared": false
      },
      {
        "name": "CHINA PEOPLES REPUBLIC OF 3.81% 09/14/2050",
        "value": "40797706.92",
        "weight": "0.00356087",
        "shared": false
      },
      {
        "name": "CHINA GOVT BOND",
        "value": "40466632.02",
        "weight": "0.00353198",
        "shared": false
      },
      {
        "name": "GERMANY FEDERAL REPUBLIC OF 0.5% 02/15/2028 REGS",
        "value": "37262031.49",
        "weight": "0.00325228",
        "shared": true
      },
      {
        "name": "China Development Bank",
        "value": "36986928.66",
        "weight": "0.00322826",
        "shared": false
      },
      {
        "name": "People's Republic of China",
        "value": "36909760.51",
        "weight": "0.00322153",
        "shared": false
      },
      {
        "name": "China Development Bank",
        "value": "36782382.13",
        "weight": "0.00321041",
        "shared": false
      },
      {
        "name": "CHINA GOVT BOND",
        "value": "35325310.81",
        "weight": "0.00308324",
        "shared": false
      },
      {
        "name": "CHINA GOVERNMENT BOND CNY 1.49% 12-25-31",
        "value": "35028699.02",
        "weight": "0.00305735",
        "shared": false
      },
      {
        "name": "Agricultural Development Bank of China",
        "value": "32953910.53",
        "weight": "0.00287626",
        "shared": false
      },
      {
        "name": "CHINA GOVT BOND",
        "value": "31045634.51",
        "weight": "0.00270970",
        "shared": false
      },
      {
        "name": "Agricultural Development Bank of China",
        "value": "30255246.63",
        "weight": "0.00264071",
        "shared": false
      },
      {
        "name": "China Development Bank",
        "value": "29273826.40",
        "weight": "0.00255505",
        "shared": false
      },
      {
        "name": "French Republic Government Bonds OAT",
        "value": "28865292.19",
        "weight": "0.00251940",
        "shared": true
      },
      {
        "name": "China Development Bank",
        "value": "28764531.31",
        "weight": "0.00251060",
        "shared": false
      },
      {
        "name": "CHINA GOVT BOND",
        "value": "26732843.80",
        "weight": "0.00233327",
        "shared": false
      },
      {
        "name": "French Republic Government Bonds OAT",
        "value": "26606278.31",
        "weight": "0.00232223",
        "shared": true
      },
      {
        "name": "French Republic Government Bonds OAT",
        "value": "25808732.28",
        "weight": "0.00225262",
        "shared": true
      },
      {
        "name": "French Republic Government Bonds OAT",
        "value": "25710835.01",
        "weight": "0.00224407",
        "shared": true
      },
      {
        "name": "DEUTSCHLAND REP",
        "value": "25676047.67",
        "weight": "0.00224104",
        "shared": false
      },
      {
        "name": "China Development Bank",
        "value": "25564494.21",
        "weight": "0.00223130",
        "shared": false
      },
      {
        "name": "GERMANY FEDERAL REPUBLIC OF 2.4% 11/15/2030 REGS",
        "value": "25457913.22",
        "weight": "0.00222200",
        "shared": false
      },
      {
        "name": "United Kingdom Gilt",
        "value": "25362099.62",
        "weight": "0.00221363",
        "shared": false
      },
      {
        "name": "SWITZERLAND CONFEDERATION 0% 06/22/2029 REGS",
        "value": "25195845.16",
        "weight": "0.00219912",
        "shared": true
      },
      {
        "name": "Agricultural Development Bank of China",
        "value": "24632074.36",
        "weight": "0.00214992",
        "shared": false
      },
      {
        "name": "JAPAN GOVT 10-YR",
        "value": "24290121.79",
        "weight": "0.00212007",
        "shared": true
      },
      {
        "name": "Agricultural Development Bank of China",
        "value": "24053733.30",
        "weight": "0.00209944",
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      },
      {
        "name": "China Development Bank",
        "value": "23443369.15",
        "weight": "0.00204617",
        "shared": false
      },
      {
        "name": "French Republic Government Bonds OAT",
        "value": "23332489.89",
        "weight": "0.00203649",
        "shared": true
      },
      {
        "name": "JAPAN GOVT 10-YR",
        "value": "23115521.26",
        "weight": "0.00201755",
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      },
      {
        "name": "Export-Import Bank of China/The",
        "value": "23011281.55",
        "weight": "0.00200845",
        "shared": false
      },
      {
        "name": "UNITED KINGDOM GILT GBP REG S 4.75% 10-22-43",
        "value": "22837494.81",
        "weight": "0.00199328",
        "shared": false
      },
      {
        "name": "French Republic Government Bonds OAT",
        "value": "22489631.32",
        "weight": "0.00196292",
        "shared": false
      },
      {
        "name": "French Republic Government Bonds OAT",
        "value": "22008620.13",
        "weight": "0.00192094",
        "shared": true
      },
      {
        "name": "REPUBLIC OF POLAND GOVERNMENT BOND PLN 1.25% 10-25-30",
        "value": "21500756.68",
        "weight": "0.00187661",
        "shared": false
      },
      {
        "name": "JAPAN GOVT 10-YR",
        "value": "21461552.12",
        "weight": "0.00187319",
        "shared": true
      },
      {
        "name": "French Republic Government Bonds OAT",
        "value": "21206487.82",
        "weight": "0.00185093",
        "shared": false
      },
      {
        "name": "French Republic Government Bonds OAT",
        "value": "21105420.00",
        "weight": "0.00184211",
        "shared": false
      }
    ]
  },
  "error": null,
  "sources": [
    {
      "label": "N-PORT (fund A)",
      "accession_no": "0000035402-26-003386",
      "as_of": "2026-03-31",
      "edgar_url": "https://www.sec.gov/Archives/edgar/data/35315/000003540226003386/0000035402-26-003386-index.htm"
    },
    {
      "label": "N-PORT (fund B)",
      "accession_no": "0001410368-26-031758",
      "as_of": "2026-01-31",
      "edgar_url": "https://www.sec.gov/Archives/edgar/data/1100663/000141036826031758/0001410368-26-031758-index.htm"
    }
  ]
}