Jane Street
ACLX

Jane Street’s Arcellx ACLX Stock Holding History

Jane Street’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 		$2.64M Buy
23,000
+3,800
+20% +$335K ﹤0.01% 4577
2025
Q4 		$1.25M Buy
19,200
+1,200
+7% +$95.7K ﹤0.01% 5691
2025
Q3 		$1.48M Sell
18,000
-31,800
-64% -$2.29M ﹤0.01% 5496
2025
Q2 		$3.28M Sell
49,800
-51,400
-51% -$3.2M ﹤0.01% 3620
2025
Q1 		$6.64M Sell
101,200
-1,700
-2% -$115K ﹤0.01% 2500
2024
Q4 		$7.89M Sell
102,900
-9,900
-9% -$855K ﹤0.01% 2115
2024
Q3 		$9.42M Buy
+112,800
New +$7.51M ﹤0.01% 1970
2024
Q1 		– Sell
-132,900
Closed -$7.38M – 9100
2023
Q4 		$7.38M Buy
+132,900
New +$6M ﹤0.01% 2338

Other funds holding ACLX

GS
Gilead Sciences Foster City, California $1.65B AUM 166.99% 1-Year Est. Return
PBA
Paradigm Biocapital Advisors New York $4.89B AUM 251.12% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 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

Jane Street's ACLX Position: Q1 2026 in Review

Jane Street sold out of Arcellx (ACLX) in Q1 2026, closing a stake of 54,670 shares — an estimated $4.83M sold.

Jane Street first reported a position in ACLX in Q1 2023 and held it in 9 quarters. The position peaked at $6.11M in Q3 2025. 239 funds tracked by Wall St. Rank hold ACLX as of Q1 2026.

  • Jane Street reported no remaining Arcellx position as of Q1 2026 after selling out during the quarter.
  • Jane Street sold 54,670 Arcellx shares in Q1 2026, an estimated $4.83M.
  • Jane Street first reported a position in Arcellx in Q1 2023 and held it in 9 quarters.
  • Jane Street's Arcellx position peaked at $6.11M in Q3 2025.
  • 239 funds tracked by Wall St. Rank held Arcellx as of Q1 2026.

Based on Jane Street's 13F filing for Q1 2026, filed 12 May 2026.