Fidelity Investments
ACLX

Fidelity Investments’s Arcellx ACLX Stock Holding History

Fidelity Investments’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 		$13.7M Sell
119,378
-3,444,350
-97% -$304M ﹤0.01% 1930
2025
Q4 		$232M Sell
3,563,728
-2,197,589
-38% -$175M 0.01% 805
2025
Q3 		$473M Sell
5,761,317
-210,834
-4% -$15.2M 0.02% 524
2025
Q2 		$393M Sell
5,972,151
-331,528
-5% -$20.6M 0.02% 581
2025
Q1 		$414M Sell
6,303,679
-1,652,954
-21% -$112M 0.03% 523
2024
Q4 		$610M Buy
7,956,633
+1,477,360
+23% +$128M 0.04% 404
2024
Q3 		$541M Sell
6,479,273
-8,061
-0.1% -$537K 0.03% 446
2024
Q2 		$358M Buy
6,487,334
+1,092,839
+20% +$59.4M 0.02% 576
2024
Q1 		$375M Buy
5,394,495
+1,015,326
+23% +$64.4M 0.03% 548
2023
Q4 		$243M Sell
4,379,169
-158,183
-3% -$7.14M 0.02% 671
2023
Q3 		$163M Sell
4,537,352
-153,646
-3% -$5.3M 0.01% 782
2023
Q2 		$148M Buy
4,690,998
+2,007,908
+75% +$76.8M 0.01% 840
2023
Q1 		$82.7M Buy
2,683,090
+1,389,490
+107% +$42.2M 0.01% 1054
2022
Q4 		$40.1M Buy
1,293,600
+504,932
+64% +$11.6M ﹤0.01% 1342
2022
Q3 		$14.8M Buy
788,668
+164,950
+26% +$3.16M ﹤0.01% 1728
2022
Q2 		$11.3M Buy
623,718
+623,705
+4,797,731% +$8.05M ﹤0.01% 1924
2022
Q1 		$0 Buy
+13
New +$217 ﹤0.01% 4904

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

Fidelity Investments's ACLX Position: Q1 2026 in Review

Fidelity Investments reduced its Arcellx (ACLX) stake by 97% in Q1 2026, selling an estimated $304M and leaving 119,378 shares worth $13.7M. The position accounts for ﹤0.01% of the portfolio, ranked #1930.

Fidelity Investments first reported a position in ACLX in Q1 2022 and has held it in 17 quarters since. The position peaked at $610M in Q4 2024. 239 funds tracked by Wall St. Rank hold ACLX as of Q1 2026.

  • Fidelity Investments held 119,378 shares of Arcellx worth $13.7M as of Q1 2026.
  • Fidelity Investments sold 3,444,350 Arcellx shares in Q1 2026, an estimated $304M.
  • Arcellx made up ﹤0.01% of Fidelity Investments's portfolio in Q1 2026, its #1930 holding.
  • Fidelity Investments first reported a position in Arcellx in Q1 2022 and has held it in 17 quarters since.
  • Fidelity Investments's Arcellx position peaked at $610M in Q4 2024.
  • 239 funds tracked by Wall St. Rank held Arcellx as of Q1 2026.

Based on Fidelity Investments's 13F filing for Q1 2026, filed 15 May 2026.