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 		$3.54M Sell
30,800
-2,500
-8% -$221K ﹤0.01% 4064
2025
Q4 		$2.17M Buy
+33,300
New +$2.66M ﹤0.01% 4660
2025
Q3 		– Sell
-82,000
Closed -$5.4M – 10664
2025
Q2 		$5.4M Buy
+82,000
New +$5.1M ﹤0.01% 2888
2025
Q1 		– Sell
-18,200
Closed -$1.4M – 9298
2024
Q4 		$1.4M Sell
18,200
-90,800
-83% -$7.84M ﹤0.01% 4789
2024
Q3 		$9.1M Buy
+109,000
New +$7.26M ﹤0.01% 2008
2024
Q2 		– Sell
-23,000
Closed -$1.6M – 9245
2024
Q1 		$1.6M Sell
23,000
-50,800
-69% -$3.22M ﹤0.01% 4530
2023
Q4 		$4.1M Buy
+73,800
New +$3.33M ﹤0.01% 3156
2023
Q3 		– Sell
-49,900
Closed -$1.58M – 8529
2023
Q2 		$1.58M Buy
+49,900
New +$1.91M ﹤0.01% 4520

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

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.