William Blair Investment Management, LLC - Q42025 Holdings

William Blair Investment Management, LLC holds 413 stocks with a total portfolio value of $ 35.85B as of Q42025. In Q42025, William Blair Investment Management, LLC added 45 new positions, increased stakes in 107 stocks, reduced 258 holdings, and fully exited 46 positions. The largest holding is Nvidia Corporation (NVDA), representing 5.53% of the total portfolio.