BLAIR WILLIAM & CO/IL is an institutional investment manager that files quarterly 13F reports with the SEC. As of Q1 2026, the fund manages $34.9B in reported equity holdings across 1922 positions. The largest holdings are AAPL (4.3%), MSFT (3.7%), AMZN (3.6%), NVDA (2.7%), GOOGL (2.5%). The portfolio is concentrated in Other (87.2%), Communication Services (3.5%), Financial Services (2.8%). Data sourced from SEC EDGAR 13F filings (CIK 902367).