Marshall Wace
ACLX

Marshall Wace’s Arcellx ACLX Stock Holding History

Marshall Wace’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
-8,442
Closed -$550K – 3134
2025
Q4 		$550K Buy
+8,442
New +$673K ﹤0.01% 2201
2025
Q3 		– Sell
-111,808
Closed -$7.36M – 2839
2025
Q2 		$7.36M Buy
111,808
+96,408
+626% +$6M 0.01% 965
2025
Q1 		$1.01M Buy
+15,400
New +$1.04M ﹤0.01% 1776
2024
Q2 		– Sell
-3,300
Closed -$230K – 2490
2024
Q1 		$230K Buy
+3,300
New +$209K ﹤0.01% 2196

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

Marshall Wace's ACLX Position: Q1 2026 in Review

Marshall Wace sold out of Arcellx (ACLX) in Q1 2026, closing a stake of 8,442 shares — an estimated $550K sold.

Marshall Wace first reported a position in ACLX in Q1 2024 and held it in 4 quarters. The position peaked at $7.36M in Q2 2025. 239 funds tracked by Wall St. Rank hold ACLX as of Q1 2026.

  • Marshall Wace reported no remaining Arcellx position as of Q1 2026 after selling out during the quarter.
  • Marshall Wace sold 8,442 Arcellx shares in Q1 2026, an estimated $550K.
  • Marshall Wace first reported a position in Arcellx in Q1 2024 and held it in 4 quarters.
  • Marshall Wace's Arcellx position peaked at $7.36M in Q2 2025.
  • 239 funds tracked by Wall St. Rank held Arcellx as of Q1 2026.

Based on Marshall Wace's 13F filing for Q1 2026, filed 15 May 2026.