HS
ACLX

HighVista Strategies’s Arcellx ACLX Stock Holding History

HighVista Strategies’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
-75,002
Closed -$4.89M – 158
2025
Q4 		$4.89M Sell
75,002
-21,175
-22% -$1.69M 1.26% 23
2025
Q3 		$7.9M Buy
96,177
+60,463
+169% +$4.35M 1.94% 9
2025
Q2 		$2.35M Sell
35,714
-11,782
-25% -$733K 0.86% 30
2025
Q1 		$3.12M Buy
47,496
+3,692
+8% +$250K 1.2% 10
2024
Q4 		$3.36M Sell
43,804
-11,335
-21% -$979K 1.25% 16
2024
Q3 		$4.6M Buy
55,139
+4,099
+8% +$273K 1.59% 4
2024
Q2 		$2.82M Sell
51,040
-21,190
-29% -$1.15M 1.03% 23
2024
Q1 		$5.02M Hold
72,230
– – 1.79% 6
2023
Q4 		$4.01M Sell
72,230
-5,798
-7% -$262K 1.45% 15
2023
Q3 		$2.8M Buy
78,028
+15,159
+24% +$523K 1.3% 21
2023
Q2 		$1.99M Buy
62,869
+8,589
+16% +$328K 0.91% 33
2023
Q1 		$1.67M Buy
+54,280
New +$1.65M 1.36% 27

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 $4.89B AUM 251.12% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 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

HighVista Strategies's ACLX Position: Q1 2026 in Review

HighVista Strategies sold out of Arcellx (ACLX) in Q1 2026, closing a stake of 75,002 shares — an estimated $4.89M sold.

HighVista Strategies first reported a position in ACLX in Q1 2023 and held it in 12 quarters. The position peaked at $7.9M in Q3 2025. 239 funds tracked by Wall St. Rank hold ACLX as of Q1 2026.

  • HighVista Strategies reported no remaining Arcellx position as of Q1 2026 after selling out during the quarter.
  • HighVista Strategies sold 75,002 Arcellx shares in Q1 2026, an estimated $4.89M.
  • HighVista Strategies first reported a position in Arcellx in Q1 2023 and held it in 12 quarters.
  • HighVista Strategies's Arcellx position peaked at $7.9M in Q3 2025.
  • 239 funds tracked by Wall St. Rank held Arcellx as of Q1 2026.

Based on HighVista Strategies's 13F filing for Q1 2026, filed 15 May 2026.