HCA
ACLX

Harbor Capital Advisors’s Arcellx ACLX Stock Holding History

Harbor Capital Advisors’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
-24,121
Closed -$1.57M – 1217
2025
Q4 		$1.57M Buy
24,121
+2,447
+11% +$195K 0.12% 233
2025
Q3 		$1.78M Sell
21,674
-3,047
-12% -$219K 0.14% 197
2025
Q2 		$1.63M Buy
24,721
+1,885
+8% +$117K 0.07% 353
2025
Q1 		$1.5M Sell
22,836
-629
-3% -$42.6K 0.07% 343
2024
Q4 		$1.8M Sell
23,465
-4,431
-16% -$383K 0.08% 319
2024
Q3 		$2.33M Buy
27,896
+7,534
+37% +$502K 0.1% 275
2024
Q2 		$1.12M Buy
20,362
+1,568
+8% +$85.2K 0.09% 326
2024
Q1 		$1.31M Buy
+18,794
New +$1.19M 0.17% 156

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

Harbor Capital Advisors's ACLX Position: Q1 2026 in Review

Harbor Capital Advisors sold out of Arcellx (ACLX) in Q1 2026, closing a stake of 24,121 shares — an estimated $1.57M sold.

Harbor Capital Advisors first reported a position in ACLX in Q1 2024 and held it in 8 quarters. The position peaked at $2.33M in Q3 2024. 239 funds tracked by Wall St. Rank hold ACLX as of Q1 2026.

  • Harbor Capital Advisors reported no remaining Arcellx position as of Q1 2026 after selling out during the quarter.
  • Harbor Capital Advisors sold 24,121 Arcellx shares in Q1 2026, an estimated $1.57M.
  • Harbor Capital Advisors first reported a position in Arcellx in Q1 2024 and held it in 8 quarters.
  • Harbor Capital Advisors's Arcellx position peaked at $2.33M in Q3 2024.
  • 239 funds tracked by Wall St. Rank held Arcellx as of Q1 2026.

Based on Harbor Capital Advisors's 13F filing for Q1 2026, filed 28 Apr 2026.