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WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC

WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC is a Mutual Fund institutional filer with the SEC under CIK 1644956, reporting 403 portfolio positions, with 20 historical 13F filings on file. Most recent reporting period: 2026-06-30.

A Form 13F reports a manager's US-listed stock and option positions only. It does not include real estate, private funds, bonds, cash or non-US holdings, so a 13F portfolio value is not the firm's total assets under management (AUM).

  • State of incorporation: DE
  • Filing type: 13F-HR
  • Latest reporting period: 2026-06-30
  • Last filed: 2026-08-12

Top 10 portfolio positions

The largest reported holdings in WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC's most recent 13F filing, ranked by reported market value.

  1. TAIWAN SEMICONDUCTOR MANUFAC (TSM)
  2. NVIDIA CORPORATION (NVDA)
  3. ALPHABET INC (GOOGL)
  4. APPLE INC (AAPL)
  5. BROADCOM INC (AVGO)
  6. MICROSOFT CORP (MSFT)
  7. META PLATFORMS INC (META)
  8. AMAZON COM INC (AMZN)
  9. MASTERCARD INCORPORATED (MA)
  10. ADVANCED MICRO DEVICES INC (AMD)
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