BBA
ACLX

Baker Bros. Advisors’s Arcellx ACLX Stock Holding History

Baker Bros. Advisors’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
2025
Q4 		– Sell
-166,825
Closed -$13.7M – 87
2025
Q3 		$13.7M Hold
166,825
– – 0.1% 56
2025
Q2 		$11M Buy
+166,825
New +$10.4M 0.11% 52

Other funds holding ACLX

T. Rowe Price Investment Management
T. Rowe Price Investment Management Baltimore, Maryland $145B AUM 22.78% 1-Year Est. Return
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
Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 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
VPC
Vestal Point Capital New York $3.58B AUM 189.12% 1-Year Est. Return
SOCM
SR One Capital Management Wayne, Pennsylvania $915M AUM 209.71% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

Baker Bros. Advisors's ACLX Position: Q4 2025 in Review

Baker Bros. Advisors sold out of Arcellx (ACLX) in Q4 2025, closing a stake of 166,825 shares — an estimated $13.7M sold.

Baker Bros. Advisors first reported a position in ACLX in Q2 2025 and held it in 2 quarters. The position peaked at $13.7M in Q3 2025. 218 funds tracked by Wall St. Rank hold ACLX as of Q4 2025.

  • Baker Bros. Advisors reported no remaining Arcellx position as of Q4 2025 after selling out during the quarter.
  • Baker Bros. Advisors sold 166,825 Arcellx shares in Q4 2025, an estimated $13.7M.
  • Baker Bros. Advisors first reported a position in Arcellx in Q2 2025 and held it in 2 quarters.
  • Baker Bros. Advisors's Arcellx position peaked at $13.7M in Q3 2025.
  • 218 funds tracked by Wall St. Rank held Arcellx as of Q4 2025.

Based on Baker Bros. Advisors's 13F filing for Q4 2025, filed 17 Feb 2026.