LP
ACLX

LMR Partners’s Arcellx ACLX Stock Holding History

LMR Partners’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 		$24.4M Buy
+212,495
New +$18.8M 0.05% 185
2023
Q4 		– Sell
-8,116
Closed -$291K – 976
2023
Q3 		$291K Hold
8,116
– – ﹤0.01% 609
2023
Q2 		$257K Sell
8,116
-2,092
-20% -$80K ﹤0.01% 564
2023
Q1 		$315K Buy
+10,208
New +$310K ﹤0.01% 792
2022
Q3 		– Sell
-14,143
Closed -$256K – 1205
2022
Q2 		$256K Sell
14,143
-3,260
-19% -$42.1K ﹤0.01% 1030
2022
Q1 		$244K Buy
+17,403
New +$291K ﹤0.01% 1112

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

LMR Partners's ACLX Position: Q1 2026 in Review

LMR Partners opened a new position in Arcellx (ACLX) in Q1 2026: 212,495 shares worth $24.4M. The stake represents 0.05% of the portfolio and ranks #185 among its holdings. This is a return to the name: LMR Partners previously reported a position in ACLX as recently as Q3 2023.

LMR Partners first reported a position in ACLX in Q1 2022 and has held it in 6 quarters since. 239 funds tracked by Wall St. Rank hold ACLX as of Q1 2026.

  • LMR Partners held 212,495 shares of Arcellx worth $24.4M as of Q1 2026.
  • Arcellx was a new LMR Partners position in Q1 2026.
  • Arcellx made up 0.05% of LMR Partners's portfolio in Q1 2026, its #185 holding.
  • LMR Partners first reported a position in Arcellx in Q1 2022 and has held it in 6 quarters since.
  • 239 funds tracked by Wall St. Rank held Arcellx as of Q1 2026.

Based on LMR Partners's 13F filing for Q1 2026, filed 15 May 2026.