Wellington Management Group
ACLX

Wellington Management Group’s Arcellx ACLX Stock Holding History

Wellington Management Group’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 		– Sell
-214,776
Closed -$14M – 1872
2025
Q4 		$14M Sell
214,776
-17,423
-8% -$1.39M ﹤0.01% 1155
2025
Q3 		$19.1M Sell
232,199
-9,210
-4% -$663K ﹤0.01% 1039
2025
Q2 		$15.9M Buy
241,409
+222,970
+1,209% +$13.9M ﹤0.01% 1051
2025
Q1 		$1.21M Sell
18,439
-1,254
-6% -$85K ﹤0.01% 1665
2024
Q4 		$1.51M Sell
19,693
-1,275
-6% -$110K ﹤0.01% 1639
2024
Q3 		$1.75M Buy
20,968
+2,768
+15% +$184K ﹤0.01% 1575
2024
Q2 		$1M Buy
18,200
+2,503
+16% +$136K ﹤0.01% 1676
2024
Q1 		$1.09M Buy
15,697
+1,628
+12% +$103K ﹤0.01% 1669
2023
Q4 		$781K Sell
14,069
-43,565
-76% -$1.97M ﹤0.01% 1661
2023
Q3 		$2.07M Buy
57,634
+1,432
+3% +$49.4K ﹤0.01% 1468
2023
Q2 		$1.78M Sell
56,202
-56,261
-50% -$2.15M ﹤0.01% 1499
2023
Q1 		$3.46M Buy
112,463
+43,794
+64% +$1.33M ﹤0.01% 1371
2022
Q4 		$2.13M Buy
+68,669
New +$1.58M ﹤0.01% 1495

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

Wellington Management Group's ACLX Position: Q1 2026 in Review

Wellington Management Group sold out of Arcellx (ACLX) in Q1 2026, closing a stake of 214,776 shares — an estimated $14M sold.

Wellington Management Group first reported a position in ACLX in Q4 2022 and held it in 13 quarters. The position peaked at $19.1M in Q3 2025. 239 funds tracked by Wall St. Rank hold ACLX as of Q1 2026.

  • Wellington Management Group reported no remaining Arcellx position as of Q1 2026 after selling out during the quarter.
  • Wellington Management Group sold 214,776 Arcellx shares in Q1 2026, an estimated $14M.
  • Wellington Management Group first reported a position in Arcellx in Q4 2022 and held it in 13 quarters.
  • Wellington Management Group's Arcellx position peaked at $19.1M in Q3 2025.
  • 239 funds tracked by Wall St. Rank held Arcellx as of Q1 2026.

Based on Wellington Management Group's 13F filing for Q1 2026, filed 15 May 2026.