{
  "page": "compare",
  "query": {
    "a": "DAT",
    "b": "XSW"
  },
  "retrieved_at": "2026-07-07T18:48:06+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": "ProShares Big Data Refiners ETF",
    "ticker": "DAT",
    "slug": "DAT",
    "series_id": "S000073423",
    "html_url": "https://fundwatcher.app/funds/DAT/"
  },
  "fund_b": {
    "name": "State Street(R) SPDR(R) S&P(R) Software & Services ETF",
    "ticker": "XSW",
    "slug": "XSW",
    "series_id": "S000012329",
    "html_url": "https://fundwatcher.app/funds/XSW/"
  },
  "overlap": {
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    "coverage_b_by_a": "0.1149843249236466796320105541",
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      "b": "2026-03-31"
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      },
      {
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        "name": "DYNATRACE INC",
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        "name": "MONGODB INC CL A",
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        "name": "ELASTIC NV",
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        "name": "RED VIOLET INC",
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        "name": "COGNYTE SOFTWARE LTD",
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        "name": "WEAVE COMMUNICATIONS INC",
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      {
        "name": "FX Forward Contract: CAD/USD SETTLE 2026-03-18",
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      },
      {
        "name": "Polish Zloty - New",
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      {
        "name": "ISRAELI SHEKEL",
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      {
        "name": "JAPANESE YEN",
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      {
        "name": "FX Forward Contract: AUD/USD SETTLE 2026-03-18",
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      {
        "name": "FX Spot Contract: EUR/USD SETTLE 2026-01-05",
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      },
      {
        "name": "NORWEGIAN KRONE",
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        "name": "COGNIZANT TECH SOLUTIONS CL A",
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        "name": "KLAVIYO INC-A",
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    ]
  },
  "error": null,
  "sources": [
    {
      "label": "N-PORT (fund A)",
      "accession_no": "0002071691-26-009157",
      "as_of": "2026-02-28",
      "edgar_url": "https://www.sec.gov/Archives/edgar/data/1174610/000207169126009157/0002071691-26-009157-index.htm"
    },
    {
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      "accession_no": "0001410368-26-055484",
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    }
  ]
}