TS
ACLX

Thomas Steyer’s Arcellx ACLX Stock Holding History

Thomas Steyer’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
-4,000
Closed -$261K – 174
2025
Q4 		$261K Hold
4,000
– – ﹤0.01% 119
2025
Q3 		$328K Hold
4,000
– – ﹤0.01% 99
2025
Q2 		$263K Hold
4,000
– – ﹤0.01% 110
2025
Q1 		$262K Hold
4,000
– – ﹤0.01% 110
2024
Q4 		$307K Hold
4,000
– – ﹤0.01% 111
2024
Q3 		$334K Hold
4,000
– – ﹤0.01% 119
2024
Q2 		$221K Hold
4,000
– – ﹤0.01% 131
2024
Q1 		$278K Hold
4,000
– – ﹤0.01% 133
2023
Q4 		$222K Buy
+4,000
New +$180K ﹤0.01% 123

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 $5.34B AUM 380.18% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
NMC
NEA Management Company Timonium, Maryland $1.59B AUM 234.06% 1-Year Est. Return
PCM
Pentwater Capital Management Naples, Florida $16.4B AUM 55.44% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
SOCM
SR One Capital Management Wayne, Pennsylvania $1.04B AUM 262.99% 1-Year Est. Return
Fidelity International
Fidelity International Hamilton, Bermuda $139B AUM 29.06% 1-Year Est. Return
HI
HBK Investments Dallas, Texas $10.2B AUM 67.73% 1-Year Est. Return

Thomas Steyer's ACLX Position: Q1 2026 in Review

Thomas Steyer sold out of Arcellx (ACLX) in Q1 2026, closing a stake of 4,000 shares — an estimated $261K sold.

Thomas Steyer first reported a position in ACLX in Q4 2023 and held it in 9 quarters. The position peaked at $334K in Q3 2024. 240 funds tracked by Wall St. Rank hold ACLX as of Q1 2026.

  • Thomas Steyer reported no remaining Arcellx position as of Q1 2026 after selling out during the quarter.
  • Thomas Steyer sold 4,000 Arcellx shares in Q1 2026, an estimated $261K.
  • Thomas Steyer first reported a position in Arcellx in Q4 2023 and held it in 9 quarters.
  • Thomas Steyer's Arcellx position peaked at $334K in Q3 2024.
  • 240 funds tracked by Wall St. Rank held Arcellx as of Q1 2026.

Based on Farallon Capital Management's 13F filing for Q1 2026, filed 15 May 2026.