13F Insight
Viewing historical filing for 2025Q4. View latest →
DOSSIER · 13F-HR · Q1 2026

WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC

$30.3B in tracked AUM across 413 positions as of Q1 2026.

WB
CIK 0001644956 · last filed Mar 31, 2026
Total AUM
$30.3B
as of Q1 2026
Holdings
413
—
positions
Whale Score
64
64
tracked
Activity
—
no data
changes this Q

Top 10 holdings

By portfolio weight as of Q1 2026.

#HoldingValueSharesWeight
Loading holdings…

Filing history

Filing history loading…