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 Q2	$4.64M	Sell	5,000 -25,000	-83%	-$20.6M	0.01%	586
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 Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return

T. Rowe Price Associates Baltimore, Maryland $999B AUM 46.22% 1-Year Est. Return

Jupiter Topco New York $245B AUM

Capital World Investors Los Angeles, California $846B AUM 46.74% 1-Year Est. Return

Artisan Partners Milwaukee, Wisconsin $63.1B AUM 35.51% 1-Year Est. Return

ACA

Avoro Capital Advisors New York $11.1B AUM 207.82% 1-Year Est. Return

Wellington Management Group Boston, Massachusetts $580B AUM 38.23% 1-Year Est. Return

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

RTW Investments New York $11.7B AUM 174.13% 1-Year Est. Return

Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return

Hudson Bay Capital Management's ARGX Position: Q2 2026 in Review

Hudson Bay Capital Management reduced its argenx (ARGX) stake by 83% in Q2 2026, selling an estimated $20.6M and leaving 5,000 shares worth $4.64M. The position accounts for 0.01% of the portfolio, ranked #586.

Hudson Bay Capital Management first reported a position in ARGX in Q1 2023 and has held it in 11 quarters since. The position peaked at $37.7M in Q4 2023. 508 funds tracked by Wall St. Rank hold ARGX as of Q2 2026.

Hudson Bay Capital Management held 5,000 shares of argenx worth $4.64M as of Q2 2026.
Hudson Bay Capital Management sold 25,000 argenx shares in Q2 2026, an estimated $20.6M.
argenx made up 0.01% of Hudson Bay Capital Management's portfolio in Q2 2026, its #586 holding.
Hudson Bay Capital Management first reported a position in argenx in Q1 2023 and has held it in 11 quarters since.
Hudson Bay Capital Management's argenx position peaked at $37.7M in Q4 2023.
508 funds tracked by Wall St. Rank held argenx as of Q2 2026.

Based on Hudson Bay Capital Management's 13F filing for Q2 2026, filed 14 Aug 2026.