Blair William & Co/il
William Blair & Company is a privately held, independent global investment banking, asset management, and private wealth management firm headquartered in Chicago, Illinois. Established in 1935, it remains 100% active employee-owned with approximately 2,033 employees as of mid-2025, including a significant proportion dedicated to investment management. The firm serves private and public pension funds, insurance companies, endowments, foundations, sovereign wealth funds, financial advisors, corporations, financial sponsors, and entrepreneurs, providing both advisory and direct investment services across more than 20 global offices.
Investment Strategy
William Blair employs a disciplined, repeatable, and collaborative active management investment process emphasizing strong, risk-adjusted returns for clients. Its teams use intensive fundamental research, insightful judgment, and broad-based expertise to manage a wide variety of equity and fixed income portfolios, including U.S. growth and core equity strategies. The firm tailors investment solutions for institutional, pooled fund, and high-net worth clients, and invests in both separately managed accounts and affiliated funds. Strategic diversification and active portfolio management are central, with client relationships and long-term value creation as core priorities.
Top Holdings
Equity Positions (1,793)
| Ticker | Security | Weight | Market Value | Shares | Avg Cost | Price | Change (QoQ) |
|---|---|---|---|---|---|---|---|
M MSFT | MICROSOFT CORP | 5.11% | $1.84B | 3,696,704 | $91.28 | $497.41 | +$425.0M |
A AMZN | AMAZON COM INC | 3.73% | $1.34B | 6,121,875 | $61.14 | $219.39 | +$172.8M |
A AAPL | APPLE INC | 3.43% | $1.24B | 6,026,880 | $38.78 | $205.17 | -$135.0M |
N NVDA | NVIDIA CORPORATION | 2.46% | $884.6M | 5,599,138 | $49.24 | $157.99 | +$301.5M |
V V | VISA INC | 2.04% | $735.3M | 2,071,053 | $66.76 | $355.05 | +$21.5M |