CM
ACLX

Caption Management’s Arcellx ACLX Stock Holding History

Caption Management’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 		$25.8M Sell
225,000
-25,000
-10% -$2.21M 0.15% 137
2025
Q4 		$16.3M Buy
+250,000
New +$19.9M 0.11% 222
2025
Q3 		– Sell
-133,600
Closed -$8.8M – 1617
2025
Q2 		$8.8M Sell
133,600
-142,000
-52% -$8.84M 0.1% 239
2025
Q1 		$18.1M Buy
275,600
+170,600
+162% +$11.6M 0.17% 107
2024
Q4 		$8.05M Sell
105,000
-110,700
-51% -$9.56M 0.08% 241
2024
Q3 		$18M Buy
+215,700
New +$14.4M 0.29% 78
2024
Q1 		– Sell
-25,000
Closed -$1.39M – 1138
2023
Q4 		$1.39M Buy
+25,000
New +$1.13M 0.02% 727
2023
Q2 		– Sell
-12,500
Closed -$385K – 1066
2023
Q1 		$385K Buy
+12,500
New +$379K 0.01% 837

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

Caption Management's ACLX Position: Q1 2026 in Review

Caption Management sold out of Arcellx (ACLX) in Q1 2026, closing a stake of 1,825 shares — an estimated $161K sold.

Caption Management first reported a position in ACLX in Q3 2024 and held it in 5 quarters. The position peaked at $4.4M in Q1 2025. 239 funds tracked by Wall St. Rank hold ACLX as of Q1 2026.

  • Caption Management reported no remaining Arcellx position as of Q1 2026 after selling out during the quarter.
  • Caption Management sold 1,825 Arcellx shares in Q1 2026, an estimated $161K.
  • Caption Management first reported a position in Arcellx in Q3 2024 and held it in 5 quarters.
  • Caption Management's Arcellx position peaked at $4.4M in Q1 2025.
  • 239 funds tracked by Wall St. Rank held Arcellx as of Q1 2026.

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