Hudson Bay Capital Management
ACLX

Hudson Bay Capital Management’s Arcellx ACLX Stock Holding History

Hudson Bay Capital Management’s Portfolio ACLX Stock Details ACLX Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		– Sell
-122,900
Closed -$14.1M – 1340
2026
Q1 		$14.1M Sell
122,900
-278,042
-69% -$24.5M 0.05% 245
2025
Q4 		$26.1M Buy
+400,942
New +$32M 0.09% 197

Other funds holding ACLX

DekaBank Deutsche Girozentrale
DekaBank Deutsche Girozentrale Frankfurt, Germany $59.2B AUM 26.02% 1-Year Est. Return
IA
IFP Advisors Tampa, Florida $5.54B AUM 27.43% 1-Year Est. Return

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

Hudson Bay Capital Management sold out of Arcellx (ACLX) in Q2 2026, closing a stake of 122,900 shares — an estimated $14.1M sold.

Hudson Bay Capital Management first reported a position in ACLX in Q4 2025 and held it in 2 quarters. The position peaked at $26.1M in Q4 2025. 2 funds tracked by Wall St. Rank hold ACLX as of Q2 2026.

  • Hudson Bay Capital Management reported no remaining Arcellx position as of Q2 2026 after selling out during the quarter.
  • Hudson Bay Capital Management sold 122,900 Arcellx shares in Q2 2026, an estimated $14.1M.
  • Hudson Bay Capital Management first reported a position in Arcellx in Q4 2025 and held it in 2 quarters.
  • Hudson Bay Capital Management's Arcellx position peaked at $26.1M in Q4 2025.
  • 2 funds tracked by Wall St. Rank held Arcellx as of Q2 2026.

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