{
  "page": "compare",
  "query": {
    "a": "SSSWX",
    "b": "SSDOX"
  },
  "retrieved_at": "2026-07-07T16:43:14+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": "State Street Equity 500 Index Fund",
    "ticker": "SSSWX",
    "slug": "SSSWX",
    "series_id": "S000010695",
    "html_url": "https://fundwatcher.app/funds/SSSWX/"
  },
  "fund_b": {
    "name": "State Street Target Retirement 2055 Fund",
    "ticker": "SSDOX",
    "slug": "SSDOX",
    "series_id": "S000046024",
    "html_url": "https://fundwatcher.app/funds/SSDOX/"
  },
  "overlap": {
    "coverage_a_by_b": "0.3774343555393358660798907392",
    "coverage_b_by_a": "0.3774343555393358660798907392",
    "shared_count": 1,
    "as_of": {
      "a": "2026-03-31",
      "b": "2026-03-31"
    },
    "a_top": [
      {
        "name": "State Street Equity 500 Index II Portfolio",
        "value": "13535144311.47",
        "weight": "1.00000000",
        "shared": true
      }
    ],
    "b_top": [
      {
        "name": "State Street Global All Cap Equity ex-U.S. Index Portfolio",
        "value": "847127283.14",
        "weight": "0.39537390",
        "shared": false
      },
      {
        "name": "State Street Equity 500 Index II Portfolio",
        "value": "808690043.39",
        "weight": "0.37743436",
        "shared": true
      },
      {
        "name": "State Street Small/Mid Cap Equity Index Portfolio",
        "value": "278254401.76",
        "weight": "0.12986777",
        "shared": false
      },
      {
        "name": "State Street SPDR Portfolio L/T Trs ETF",
        "value": "203073240.80",
        "weight": "0.09477898",
        "shared": false
      },
      {
        "name": "State Street Navigator Securities Lending Portfolio II",
        "value": "5452893.35",
        "weight": "0.00254499",
        "shared": false
      }
    ]
  },
  "error": null,
  "sources": [
    {
      "label": "N-PORT (fund A)",
      "accession_no": "0001410368-26-055575",
      "as_of": "2026-03-31",
      "edgar_url": "https://www.sec.gov/Archives/edgar/data/1107414/000141036826055575/0001410368-26-055575-index.htm"
    },
    {
      "label": "N-PORT (fund B)",
      "accession_no": "0001410368-26-055471",
      "as_of": "2026-03-31",
      "edgar_url": "https://www.sec.gov/Archives/edgar/data/1107414/000141036826055471/0001410368-26-055471-index.htm"
    }
  ]
}