Hudson Bay Capital Management
ARGX icon

Hudson Bay Capital Management’s argenx ARGX Stock Holding History

Hudson Bay Capital Management’s Portfolio ARGX Stock Details ARGX Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$21.9M Buy
30,000
+8,178
+37% +$6.4M 0.08% 177
2025
Q4 		$18.4M Buy
21,822
+11,322
+108% +$9.69M 0.06% 233
2025
Q3 		$7.74M Sell
10,500
-57,423
-85% -$37.9M 0.03% 420
2025
Q2 		$37.4M Buy
+67,923
New +$39.4M 0.13% 127
2024
Q3 		– Sell
-15,000
Closed -$6.45M – 857
2024
Q2 		$6.45M Buy
15,000
+823
+6% +$315K 0.03% 330
2024
Q1 		$5.58M Sell
14,177
-84,826
-86% -$32.9M 0.03% 280
2023
Q4 		$37.7M Buy
99,003
+31,000
+46% +$14.4M 0.24% 65
2023
Q3 		$33.4M Buy
68,003
+31,067
+84% +$15.2M 0.26% 63
2023
Q2 		$14.4M Sell
36,936
-4,335
-11% -$1.71M 0.1% 133
2023
Q1 		$15.4M Buy
+41,271
New +$15.3M 0.13% 121

Other funds holding ARGX

Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
T. Rowe Price Associates
T. Rowe Price Associates Baltimore, Maryland $865B AUM 30.76% 1-Year Est. Return
Janus Henderson Group
Janus Henderson Group London, United Kingdom $209B AUM 37.72% 1-Year Est. Return
Capital World Investors
Capital World Investors Los Angeles, California $733B AUM 35.63% 1-Year Est. Return
Artisan Partners
Artisan Partners Milwaukee, Wisconsin $62.3B AUM 26.25% 1-Year Est. Return
Wellington Management Group
Wellington Management Group Boston, Massachusetts $535B AUM 26.23% 1-Year Est. Return
ACA
Avoro Capital Advisors New York $10.2B AUM 149.19% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
RI
RTW Investments New York $10B AUM 135.35% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.02T AUM 30.18% 1-Year Est. Return

Hudson Bay Capital Management's ARGX Position: Q1 2026 in Review

Hudson Bay Capital Management increased its argenx (ARGX) stake by 37% in Q1 2026, buying an estimated $6.4M and bringing the position to 30,000 shares worth $21.9M. The position accounts for 0.08% of the portfolio, ranked #177.

Hudson Bay Capital Management first reported a position in ARGX in Q1 2023 and has held it in 10 quarters since. The position peaked at $37.7M in Q4 2023. 476 funds tracked by Wall St. Rank hold ARGX as of Q1 2026.

  • Hudson Bay Capital Management held 30,000 shares of argenx worth $21.9M as of Q1 2026.
  • Hudson Bay Capital Management bought 8,178 argenx shares in Q1 2026, an estimated $6.4M.
  • argenx made up 0.08% of Hudson Bay Capital Management's portfolio in Q1 2026, its #177 holding.
  • Hudson Bay Capital Management first reported a position in argenx in Q1 2023 and has held it in 10 quarters since.
  • Hudson Bay Capital Management's argenx position peaked at $37.7M in Q4 2023.
  • 476 funds tracked by Wall St. Rank held argenx as of Q1 2026.

Based on Hudson Bay Capital Management's 13F filing for Q1 2026, filed 13 May 2026.