{
  "page": "compare",
  "query": {
    "a": "BGSIX",
    "b": "SEMI"
  },
  "retrieved_at": "2026-07-07T18:28:09+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": "BlackRock Technology Opportunities Fund",
    "ticker": "BGSIX",
    "slug": "BGSIX",
    "series_id": "S000001510",
    "html_url": "https://fundwatcher.app/funds/BGSIX/"
  },
  "fund_b": {
    "name": "Columbia Select Technology ETF",
    "ticker": "SEMI",
    "slug": "SEMI",
    "series_id": "S000075502",
    "html_url": "https://fundwatcher.app/funds/SEMI/"
  },
  "overlap": {
    "coverage_a_by_b": "0.5483338227296403418521901412",
    "coverage_b_by_a": "0.5483338227296403418521901412",
    "shared_count": 20,
    "as_of": {
      "a": "2026-02-27",
      "b": "2026-01-31"
    },
    "a_top": [
      {
        "name": "NVIDIA CORP",
        "value": "787212290.02",
        "weight": "0.11777989",
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      },
      {
        "name": "BROADCOM INC",
        "value": "480002126.45",
        "weight": "0.07181620",
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      },
      {
        "name": "APPLE INC",
        "value": "401675122.80",
        "weight": "0.06009719",
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      },
      {
        "name": "MICROSOFT CORP",
        "value": "357432674.00",
        "weight": "0.05347780",
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      },
      {
        "name": "TAIWAN SEMIC MFG CO LTD SP ADR",
        "value": "323798938.56",
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      },
      {
        "name": "SAMSUNG ELECTRONICS CO LTD",
        "value": "308641448.34",
        "weight": "0.04617783",
        "shared": false
      },
      {
        "name": "SK HYNIX INC",
        "value": "294211668.69",
        "weight": "0.04401890",
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      },
      {
        "name": "ALPHABET INC CL A",
        "value": "290063374.56",
        "weight": "0.04339824",
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      },
      {
        "name": "LAM RESEARCH CORP",
        "value": "281662032.50",
        "weight": "0.04214127",
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      },
      {
        "name": "ADVANTEST CORP",
        "value": "236480283.43",
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      },
      {
        "name": "MONOLITHIC POWER SYS INC",
        "value": "147756282.00",
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      },
      {
        "name": "META PLATFORMS INC CL A",
        "value": "146823789.06",
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      },
      {
        "name": "ADV MICRO DEVICE",
        "value": "146223173.29",
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      },
      {
        "name": "DATABRICKS INC SER L PC PP",
        "value": "141163421.76",
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      {
        "name": "SNOWFLAKE INC CL A",
        "value": "132684344.65",
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      },
      {
        "name": "AMAZON.COM INC",
        "value": "119159250.00",
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      },
      {
        "name": "TESLA INC",
        "value": "108942149.07",
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      {
        "name": "LUMENTUM HOLDINGS INC",
        "value": "105403546.71",
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      {
        "name": "ARISTA NETWORKS INC",
        "value": "101224639.50",
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      },
      {
        "name": "INTEL CORP",
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      {
        "name": "VERTIV HOLDINGS CO",
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      {
        "name": "ORACLE CORP",
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      {
        "name": "SIEMENS ENERGY AG",
        "value": "85642955.94",
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      {
        "name": "BlackRock Cash Funds: Institutional, SL Agency Shares",
        "value": "83563250.99",
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      {
        "name": "SOFTBANK GROUP CORP",
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      {
        "name": "ASML Holding NV",
        "value": "76245885.09",
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      {
        "name": "CROWDSTRIKE HOLDINGS INC",
        "value": "71963250.80",
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      {
        "name": "PALO ALTO NETWORKS INC",
        "value": "71684726.88",
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      {
        "name": "ANTHROPIC PBC SERIES F PC PP",
        "value": "65718940.56",
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      {
        "name": "TAKE-TWO INTERACTV SOFTWR INC",
        "value": "61803126.68",
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      {
        "name": "CORNING INC",
        "value": "57116278.94",
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      {
        "name": "ECHOSTAR CORP CL A",
        "value": "52703399.64",
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      {
        "name": "FLEX LTD",
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      {
        "name": "HYUNDAI MOTOR CO",
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      {
        "name": "ELITE MATERIAL",
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      {
        "name": "CISCO SYSTEMS INC",
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      {
        "name": "SPOTIFY TECHNOLOGY SA",
        "value": "48336902.86",
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      {
        "name": "MERCADOLIBRE INC",
        "value": "46429990.86",
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      {
        "name": "KRATOS DEFENSE and SEC SOLTN INC",
        "value": "43293298.62",
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      },
      {
        "name": "CADENCE DESIGN SYSTEMS INC",
        "value": "41340024.00",
        "weight": "0.00618515",
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      },
      {
        "name": "MONGODB INC CL A",
        "value": "38120257.38",
        "weight": "0.00570342",
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      },
      {
        "name": "WESTERN DIGITAL CORP",
        "value": "37759220.30",
        "weight": "0.00564940",
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      },
      {
        "name": "CREDO TECHNOLOGY GROUP HOLDING LTD",
        "value": "36068197.01",
        "weight": "0.00539639",
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      },
      {
        "name": "ASE TECHNOLOGY H",
        "value": "33533967.64",
        "weight": "0.00501723",
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      },
      {
        "name": "COHERENT CORP",
        "value": "33165049.05",
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      {
        "name": "PALANTIR TECHNOLOGIES INC",
        "value": "31923701.43",
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      {
        "name": "RUBRIK INC-A",
        "value": "27801405.84",
        "weight": "0.00415955",
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      {
        "name": "AEROVIRONMENT INC",
        "value": "26596987.75",
        "weight": "0.00397935",
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      {
        "name": "BYTEDANCE LTD SER E-1 PC PP",
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      },
      {
        "name": "DATADOG INC CL A",
        "value": "24239787.84",
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    ],
    "b_top": [
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        "name": "NVIDIA CORP",
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      },
      {
        "name": "BROADCOM INC",
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      {
        "name": "APPLE INC",
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      {
        "name": "MICROSOFT CORP",
        "value": "2867452.56",
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      },
      {
        "name": "LAM RESEARCH CORP",
        "value": "2510628.84",
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      },
      {
        "name": "ALPHABET INC CL A",
        "value": "1841086.00",
        "weight": "0.04939031",
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      },
      {
        "name": "TAIWAN SEMIC MFG CO LTD SP ADR",
        "value": "1615116.16",
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      {
        "name": "AMAZON.COM INC",
        "value": "1404930.30",
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      {
        "name": "MICRON TECHNOLOGY INC",
        "value": "1395241.44",
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      {
        "name": "META PLATFORMS INC CL A",
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      },
      {
        "name": "ASML HOLDING-NY",
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      {
        "name": "APPLIED MATERIALS INC",
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      {
        "name": "GOLDMAN FINANCIAL SQ PRIME OBLIG",
        "value": "760649.29",
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      },
      {
        "name": "VISA INC-CLASS A",
        "value": "741496.32",
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      {
        "name": "SYNOPSYS INC",
        "value": "679533.02",
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      },
      {
        "name": "MASTERCARD INC CL A",
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      {
        "name": "CROWDSTRIKE HOLDINGS INC",
        "value": "535865.67",
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      },
      {
        "name": "ANALOG DEVICES INC",
        "value": "450465.12",
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      {
        "name": "NETFLIX INC",
        "value": "447005.46",
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      {
        "name": "ORACLE CORP",
        "value": "431199.60",
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      {
        "name": "SHOPIFY INC CL A",
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      {
        "name": "ARISTA NETWORKS INC",
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      {
        "name": "INTUIT INC",
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      {
        "name": "CISCO SYSTEMS INC",
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      {
        "name": "AMPHENOL CORPORATION CL A",
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      {
        "name": "NXP SEMICONDUCTORS NV",
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      {
        "name": "UBER TECHNOLOGIES INC",
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      {
        "name": "ADV MICRO DEVICE",
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      },
      {
        "name": "PALO ALTO NETWORKS INC",
        "value": "269702.28",
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      {
        "name": "SERVICENOW INC",
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      },
      {
        "name": "CADENCE DESIGN SYSTEMS INC",
        "value": "248053.32",
        "weight": "0.00665446",
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      },
      {
        "name": "INTL BUS MACH CORP",
        "value": "230025.00",
        "weight": "0.00617082",
        "shared": true
      },
      {
        "name": "ROBINHOOD MARKETS INC",
        "value": "224426.88",
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      },
      {
        "name": "MARVELL TECHNOLOGY INC",
        "value": "215293.76",
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      },
      {
        "name": "SNOWFLAKE INC CL A",
        "value": "163024.20",
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    ]
  },
  "error": null,
  "sources": [
    {
      "label": "N-PORT (fund A)",
      "accession_no": "0000940400-26-014713",
      "as_of": "2026-02-27",
      "edgar_url": "https://www.sec.gov/Archives/edgar/data/844779/000094040026014713/0000940400-26-014713-index.htm"
    },
    {
      "label": "N-PORT (fund B)",
      "accession_no": "0001410368-26-033308",
      "as_of": "2026-01-31",
      "edgar_url": "https://www.sec.gov/Archives/edgar/data/1551950/000141036826033308/0001410368-26-033308-index.htm"
    }
  ]
}