XT
ACLX

XTX Topco’s Arcellx ACLX Stock Holding History

XTX Topco’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
Q1 		– Sell
-72,583
Closed -$4.73M – 3777
2025
Q4 		$4.73M Buy
+72,583
New +$5.79M 0.12% 148
2025
Q3 		– Sell
-16,787
Closed -$1.11M – 2485
2025
Q2 		$1.11M Buy
+16,787
New +$1.05M 0.05% 604
2024
Q2 		– Sell
-4,062
Closed -$283K – 1798
2024
Q1 		$283K Buy
+4,062
New +$258K 0.04% 907

Other funds holding ACLX

GS
Gilead Sciences Foster City, California $2.12B AUM 143.53% 1-Year Est. Return
PBA
Paradigm Biocapital Advisors New York $4.89B AUM 251.12% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
NMC
NEA Management Company Timonium, Maryland $1.76B AUM 223.33% 1-Year Est. Return
PCM
Pentwater Capital Management Naples, Florida $19.3B AUM 58.13% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
SOCM
SR One Capital Management Wayne, Pennsylvania $915M AUM 209.71% 1-Year Est. Return
Fidelity International
Fidelity International Hamilton, Bermuda $129B AUM 30.83% 1-Year Est. Return
HI
HBK Investments Dallas, Texas $9.85B AUM 55.6% 1-Year Est. Return

XTX Topco's ACLX Position: Q1 2026 in Review

XTX Topco sold out of Arcellx (ACLX) in Q1 2026, closing a stake of 72,583 shares — an estimated $4.73M sold.

XTX Topco first reported a position in ACLX in Q1 2024 and held it in 3 quarters. The position peaked at $4.73M in Q4 2025. 239 funds tracked by Wall St. Rank hold ACLX as of Q1 2026.

  • XTX Topco reported no remaining Arcellx position as of Q1 2026 after selling out during the quarter.
  • XTX Topco sold 72,583 Arcellx shares in Q1 2026, an estimated $4.73M.
  • XTX Topco first reported a position in Arcellx in Q1 2024 and held it in 3 quarters.
  • XTX Topco's Arcellx position peaked at $4.73M in Q4 2025.
  • 239 funds tracked by Wall St. Rank held Arcellx as of Q1 2026.

Based on XTX Topco's 13F filing for Q1 2026, filed 15 May 2026.