Ameriprise
ACLX

Ameriprise’s Arcellx ACLX Stock Holding History

Ameriprise’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 		$444K Sell
3,869
-65,287
-94% -$5.76M ﹤0.01% 3632
2025
Q4 		$4.51M Sell
69,156
-96,493
-58% -$7.7M ﹤0.01% 2512
2025
Q3 		$13.6M Buy
165,649
+44,131
+36% +$3.18M ﹤0.01% 1678
2025
Q2 		$8M Buy
121,518
+66,081
+119% +$4.11M ﹤0.01% 1986
2025
Q1 		$3.64M Buy
55,437
+45,266
+445% +$3.07M ﹤0.01% 2538
2024
Q4 		$780K Sell
10,171
-945
-9% -$81.6K ﹤0.01% 3350
2024
Q3 		$928K Sell
11,116
-194
-2% -$12.9K ﹤0.01% 3254
2024
Q2 		$624K Sell
11,310
-2,933
-21% -$159K ﹤0.01% 3351
2024
Q1 		$991K Buy
14,243
+10,488
+279% +$665K ﹤0.01% 3173
2023
Q4 		$208K Buy
+3,755
New +$169K ﹤0.01% 3720

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

Ameriprise's ACLX Position: Q1 2026 in Review

Ameriprise reduced its Arcellx (ACLX) stake by 94% in Q1 2026, selling an estimated $5.76M and leaving 3,869 shares worth $444K. The position accounts for ﹤0.01% of the portfolio, ranked #3632.

Ameriprise first reported a position in ACLX in Q4 2023 and has held it in 10 quarters since. The position peaked at $13.6M in Q3 2025. 239 funds tracked by Wall St. Rank hold ACLX as of Q1 2026.

  • Ameriprise held 3,869 shares of Arcellx worth $444K as of Q1 2026.
  • Ameriprise sold 65,287 Arcellx shares in Q1 2026, an estimated $5.76M.
  • Arcellx made up ﹤0.01% of Ameriprise's portfolio in Q1 2026, its #3632 holding.
  • Ameriprise first reported a position in Arcellx in Q4 2023 and has held it in 10 quarters since.
  • Ameriprise's Arcellx position peaked at $13.6M in Q3 2025.
  • 239 funds tracked by Wall St. Rank held Arcellx as of Q1 2026.

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