SOCM
ACLX

SR One Capital Management’s Arcellx ACLX Stock Holding History

SR One Capital 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 		$269M Hold
2,346,630
– – 29.43% 1
2025
Q4 		$153M Hold
2,346,630
– – 21.66% 2
2025
Q3 		$193M Hold
2,346,630
– – 27.86% 1
2025
Q2 		$155M Hold
2,346,630
– – 33.49% 1
2025
Q1 		$154M Hold
2,346,630
– – 39.54% 1
2024
Q4 		$180M Hold
2,346,630
– – 43.88% 1
2024
Q3 		$196M Hold
2,346,630
– – 39.29% 1
2024
Q2 		$130M Hold
2,346,630
– – 40.55% 1
2024
Q1 		$163M Sell
2,346,630
-800,000
-25% -$50.7M 44.83% 1
2023
Q4 		$175M Sell
3,146,630
-800,000
-20% -$36.1M 73.33% 1
2023
Q3 		$142M Hold
3,946,630
– – 72.57% 1
2023
Q2 		$125M Sell
3,946,630
-1,553,377
-28% -$59.4M 53.81% 1
2023
Q1 		$169M Hold
5,500,007
– – 63.12% 1
2022
Q4 		$170M Hold
5,500,007
– – 62.2% 1
2022
Q3 		$103M Hold
5,500,007
– – 47.19% 1
2022
Q2 		$99.4M Hold
5,500,007
– – 48.67% 1
2022
Q1 		$77.1M Buy
+5,500,007
New +$92M 39.48% 2

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
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
T. Rowe Price Investment Management
T. Rowe Price Investment Management Baltimore, Maryland $145B AUM 22.78% 1-Year Est. Return

SR One Capital Management's ACLX Position: Q1 2026 in Review

SR One Capital Management held its Arcellx (ACLX) position steady in Q1 2026 at 2,346,630 shares worth $269M. The position accounts for 29.43% of the portfolio, ranked #1.

SR One Capital Management first reported a position in ACLX in Q1 2022 and has held it in 17 quarters since. 239 funds tracked by Wall St. Rank hold ACLX as of Q1 2026.

  • SR One Capital Management held 2,346,630 shares of Arcellx worth $269M as of Q1 2026.
  • SR One Capital Management left its Arcellx share count unchanged in Q1 2026.
  • Arcellx made up 29.43% of SR One Capital Management's portfolio in Q1 2026, its #1 holding.
  • SR One Capital Management first reported a position in Arcellx in Q1 2022 and has held it in 17 quarters since.
  • 239 funds tracked by Wall St. Rank held Arcellx as of Q1 2026.

Based on SR One Capital Management's 13F filing for Q1 2026, filed 14 May 2026.