Position history for WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC's holdings in ARGENX SE
WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC holds 266,067 shares of ARGX (ARGENX SE), worth $194.4M as of 2026-Q1. The position was increased (+19.0% shares). ARGX represents 0.6% of WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC's portfolio.
Current Value
$194.4M
Current Shares
266,067
Total Value Change
+$6.3M
Total Shares Change
+42,401
Other major holders of ARGX: UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC, BNP PARIBAS FINANCIAL MARKETS
Increased |
| 266,067 |
+19.0% |
| $194.4M |
| 0.6% |
| $748.72 |
51 |
| 2025-Q4 | New | 223,666 | - | $188.1M | 0.5% | $837.90 | 60 |