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WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC

CHICAGO, IL · CRD 173961 · IAPD ↗ · 312-236-1600

$65.60BRegulatory AUM
142Advisory reps
388Employees
18Clients
n/aPlanning clients
9Private funds
53States
3Disclosures
wealthSegment
ApprovedSEC status

Filing changes

55
April 2026 — WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC shrank from 152 to 142 advisory reps.
Advisory representative count fell materially — advisors are moving, or the firm is shrinking.
Recruiting & transitionsM&A & valuation
76
April 2025 — WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC grew from 146 to 152 advisory reps.
Advisory representative count grew materially (>=20% or >=5 reps).
CRMRecruiting & transitionsComplianceFinancial planning software

Data: SEC Form ADV monthly roster (public). Confirm on IAPD before acting.