Renaissance Technologies
ACLX

Renaissance Technologies’s Arcellx ACLX Stock Holding History

Renaissance Technologies’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 		$11.1M Buy
+96,400
New +$8.51M 0.02% 926
2025
Q2 		– Sell
-68,000
Closed -$4.46M – 3527
2025
Q1 		$4.46M Buy
68,000
+18,900
+38% +$1.28M 0.01% 1504
2024
Q4 		$3.77M Buy
+49,100
New +$4.24M 0.01% 1628
2024
Q3 		– Sell
-27,072
Closed -$1.49M – 3490
2024
Q2 		$1.49M Buy
+27,072
New +$1.47M ﹤0.01% 2069
2024
Q1 		– Sell
-61,100
Closed -$3.39M – 3662
2023
Q4 		$3.39M Buy
61,100
+7,300
+14% +$329K 0.01% 1602
2023
Q3 		$1.93M Sell
53,800
-290,867
-84% -$10M ﹤0.01% 1892
2023
Q2 		$10.9M Buy
344,667
+328,167
+1,989% +$12.5M 0.02% 977
2023
Q1 		$508K Sell
16,500
-34,300
-68% -$1.04M ﹤0.01% 2877
2022
Q4 		$1.57M Buy
+50,800
New +$1.17M ﹤0.01% 2229
2022
Q3 		– Sell
-26,700
Closed -$483K – 3982
2022
Q2 		$483K Buy
+26,700
New +$345K ﹤0.01% 3182

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

Renaissance Technologies's ACLX Position: Q1 2026 in Review

Renaissance Technologies opened a new position in Arcellx (ACLX) in Q1 2026: 96,400 shares worth $11.1M. The stake represents 0.02% of the portfolio and ranks #926 among its holdings. This is a return to the name: Renaissance Technologies previously reported a position in ACLX as recently as Q1 2025.

Renaissance Technologies first reported a position in ACLX in Q2 2022 and has held it in 10 quarters since. 239 funds tracked by Wall St. Rank hold ACLX as of Q1 2026.

  • Renaissance Technologies held 96,400 shares of Arcellx worth $11.1M as of Q1 2026.
  • Arcellx was a new Renaissance Technologies position in Q1 2026.
  • Arcellx made up 0.02% of Renaissance Technologies's portfolio in Q1 2026, its #926 holding.
  • Renaissance Technologies first reported a position in Arcellx in Q2 2022 and has held it in 10 quarters since.
  • 239 funds tracked by Wall St. Rank held Arcellx as of Q1 2026.

Based on Renaissance Technologies's 13F filing for Q1 2026, filed 14 May 2026.