{
  "page": "compare",
  "query": {
    "a": "FSTQX",
    "b": "FBIIX"
  },
  "retrieved_at": "2026-07-07T14:17:36+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 Series International Developed Markets Bond Index Fund",
    "ticker": "FSTQX",
    "slug": "FSTQX",
    "series_id": "S000072687",
    "html_url": "https://fundwatcher.app/funds/FSTQX/"
  },
  "fund_b": {
    "name": "Fidelity International Bond Index Fund",
    "ticker": "FBIIX",
    "slug": "FBIIX",
    "series_id": "S000066711",
    "html_url": "https://fundwatcher.app/funds/FBIIX/"
  },
  "overlap": {
    "coverage_a_by_b": "0.3760078878551801144904685752",
    "coverage_b_by_a": "0.3760078878551801144904685751",
    "shared_count": 409,
    "as_of": {
      "a": "2026-03-31",
      "b": "2026-03-31"
    },
    "a_top": [
      {
        "name": "SPTR TRS EQUITY SOFR+70 BOA",
        "value": "240603319.92",
        "weight": "0.01505396",
        "shared": true
      },
      {
        "name": "Fidelity Cash Central Fund",
        "value": "160791847.98",
        "weight": "0.01006035",
        "shared": false
      },
      {
        "name": "UNITED KINGDOM GILT GBP REG S 4.5% 06-07-28",
        "value": "145689474.93",
        "weight": "0.00911543",
        "shared": true
      },
      {
        "name": "ITALY REPUBLIC OF 2.1% 08/26/2027 REGS",
        "value": "134834390.72",
        "weight": "0.00843626",
        "shared": false
      },
      {
        "name": "United Kingdom of Great Britain and Northern Ireland",
        "value": "130597762.21",
        "weight": "0.00817118",
        "shared": true
      },
      {
        "name": "JAPAN GOVT 10-YR",
        "value": "130352144.97",
        "weight": "0.00815581",
        "shared": true
      },
      {
        "name": "French Republic Government Bonds OAT",
        "value": "117592698.45",
        "weight": "0.00735749",
        "shared": true
      },
      {
        "name": "PORTUGUESE OT'S",
        "value": "109800115.82",
        "weight": "0.00686992",
        "shared": true
      },
      {
        "name": "GERMANY FEDERAL REPUBLIC OF 2.4% 10/19/2028 REGS",
        "value": "107564485.28",
        "weight": "0.00673004",
        "shared": false
      },
      {
        "name": "French Republic Government Bonds OAT",
        "value": "106362625.37",
        "weight": "0.00665485",
        "shared": true
      },
      {
        "name": "PORTUGUESE OT'S",
        "value": "102603323.34",
        "weight": "0.00641964",
        "shared": true
      },
      {
        "name": "French Republic Government Bonds OAT",
        "value": "92738532.62",
        "weight": "0.00580242",
        "shared": true
      },
      {
        "name": "UNITED KINGDOM GILT GBP REG S 3.5% 01-22-45",
        "value": "91172111.48",
        "weight": "0.00570441",
        "shared": true
      },
      {
        "name": "Republic of Austria Government Bonds",
        "value": "90251457.09",
        "weight": "0.00564681",
        "shared": true
      },
      {
        "name": "AUSTRALIAN GOVT.",
        "value": "89214533.94",
        "weight": "0.00558193",
        "shared": true
      },
      {
        "name": "AUSTRALIAN GOVT.",
        "value": "88358470.04",
        "weight": "0.00552837",
        "shared": true
      },
      {
        "name": "Republic of Austria Government Bonds",
        "value": "87640166.93",
        "weight": "0.00548343",
        "shared": true
      },
      {
        "name": "HELLENIC REPUBLIC GOVERNMENT BOND EUR REG S 3.9% 01-30-33",
        "value": "87550650.90",
        "weight": "0.00547783",
        "shared": true
      },
      {
        "name": "French Republic Government Bonds OAT",
        "value": "84041806.14",
        "weight": "0.00525829",
        "shared": true
      },
      {
        "name": "ITALY REPUBLIC OF 2.7% 10/01/2030 144A REGS",
        "value": "83596639.98",
        "weight": "0.00523044",
        "shared": true
      },
      {
        "name": "JAPAN GOVT 20-YR",
        "value": "83078993.09",
        "weight": "0.00519805",
        "shared": false
      },
      {
        "name": "UNITED KINGDOM GILT 4.250000% 07/31/2034",
        "value": "83043526.31",
        "weight": "0.00519583",
        "shared": true
      },
      {
        "name": "GERMANY FEDERAL REPUBLIC OF 2.6% 08/15/2035 REGS",
        "value": "82233104.84",
        "weight": "0.00514512",
        "shared": true
      },
      {
        "name": "SPANISH GOV'T",
        "value": "81625416.48",
        "weight": "0.00510710",
        "shared": true
      },
      {
        "name": "JAPAN GOVT 10-YR",
        "value": "80654763.58",
        "weight": "0.00504637",
        "shared": true
      },
      {
        "name": "FINNISH GOV'T",
        "value": "79853053.31",
        "weight": "0.00499621",
        "shared": true
      },
      {
        "name": "French Republic Government Bonds OAT",
        "value": "78842670.30",
        "weight": "0.00493299",
        "shared": true
      },
      {
        "name": "NETHERLANDS GOVT",
        "value": "78676385.90",
        "weight": "0.00492259",
        "shared": true
      },
      {
        "name": "French Republic Government Bonds OAT",
        "value": "77973120.19",
        "weight": "0.00487859",
        "shared": true
      },
      {
        "name": "ITALY REPUBLIC OF 3.6% 10/01/2035 REGS",
        "value": "75630384.75",
        "weight": "0.00473201",
        "shared": true
      },
      {
        "name": "SINGAPORE REPUBLIC OF 3% 04/01/2029",
        "value": "75122273.38",
        "weight": "0.00470022",
        "shared": true
      },
      {
        "name": "CANADIAN GOVERNMENT /CAD/ REGD 3.50000000",
        "value": "74875863.17",
        "weight": "0.00468480",
        "shared": true
      },
      {
        "name": "NEW ZEALAND GVT",
        "value": "73559345.58",
        "weight": "0.00460243",
        "shared": false
      },
      {
        "name": "French Republic Government Bonds OAT",
        "value": "71384965.50",
        "weight": "0.00446638",
        "shared": true
      },
      {
        "name": "Service Public Federal Chancellerie Du Premier Ministre",
        "value": "70252468.19",
        "weight": "0.00439552",
        "shared": true
      },
      {
        "name": "IRISH GOVT",
        "value": "69132986.41",
        "weight": "0.00432548",
        "shared": true
      },
      {
        "name": "JAPAN GOVT 10-YR",
        "value": "69087446.40",
        "weight": "0.00432263",
        "shared": true
      },
      {
        "name": "Republic of Austria Government Bonds",
        "value": "68574254.31",
        "weight": "0.00429052",
        "shared": true
      },
      {
        "name": "PORTUGUESE OT'S",
        "value": "67914917.03",
        "weight": "0.00424927",
        "shared": true
      },
      {
        "name": "SPANISH GOV'T",
        "value": "67239816.83",
        "weight": "0.00420703",
        "shared": true
      },
      {
        "name": "Republic of Austria Government Bonds",
        "value": "66415056.68",
        "weight": "0.00415543",
        "shared": false
      },
      {
        "name": "Republic of Ireland",
        "value": "66122104.56",
        "weight": "0.00413710",
        "shared": true
      },
      {
        "name": "GERMANY FEDERAL REPUBLIC OF 2.2% 10/10/2030 REGS",
        "value": "66044611.13",
        "weight": "0.00413225",
        "shared": true
      },
      {
        "name": "NETHERLANDS GOVT",
        "value": "65744932.97",
        "weight": "0.00411350",
        "shared": true
      },
      {
        "name": "Kingdom of Belgium Government Bonds",
        "value": "65604940.97",
        "weight": "0.00410474",
        "shared": true
      },
      {
        "name": "GERMANY FEDERAL REPUBLIC OF 2% 12/16/2027 REGS",
        "value": "65592606.79",
        "weight": "0.00410397",
        "shared": true
      },
      {
        "name": "Commonwealth of Australia",
        "value": "64363864.56",
        "weight": "0.00402709",
        "shared": true
      },
      {
        "name": "FINNISH GOV'T",
        "value": "64260438.72",
        "weight": "0.00402062",
        "shared": true
      },
      {
        "name": "French Republic Government Bonds OAT",
        "value": "63631116.78",
        "weight": "0.00398124",
        "shared": true
      },
      {
        "name": "UNITED KINGDOM GILT GBP REG S 4.375% 03-07-30",
        "value": "63439082.42",
        "weight": "0.00396923",
        "shared": true
      }
    ],
    "b_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": true
      },
      {
        "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": true
      },
      {
        "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": false
      },
      {
        "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": false
      },
      {
        "name": "ITALY REPUBLIC OF 3.45% 07/15/2027 REGS",
        "value": "6737630.24",
        "weight": "0.00546561",
        "shared": true
      },
      {
        "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": false
      },
      {
        "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": true
      },
      {
        "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": false
      },
      {
        "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": false
      },
      {
        "name": "JAPAN GOVT 20-YR",
        "value": "4306876.75",
        "weight": "0.00349377",
        "shared": false
      },
      {
        "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": true
      },
      {
        "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": true
      },
      {
        "name": "ITALY REPUBLIC OF 1.5% 04/30/2045 144A REGS",
        "value": "3629618.27",
        "weight": "0.00294437",
        "shared": true
      }
    ]
  },
  "error": null,
  "sources": [
    {
      "label": "N-PORT (fund A)",
      "accession_no": "0000035402-26-003399",
      "as_of": "2026-03-31",
      "edgar_url": "https://www.sec.gov/Archives/edgar/data/215829/000003540226003399/0000035402-26-003399-index.htm"
    },
    {
      "label": "N-PORT (fund B)",
      "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"
    }
  ]
}