Simplex Trading
ACLX

Simplex Trading’s Arcellx ACLX Stock Holding History

Simplex Trading’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 		$4.72M Buy
41,100
+41,000
+41,000% +$3.62M ﹤0.01% 1157
2025
Q4 		$6.52K Sell
100
-4,600
-98% -$367K ﹤0.01% 7277
2025
Q3 		$385K Buy
4,700
+2,500
+114% +$180K ﹤0.01% 4156
2025
Q2 		$144K Sell
2,200
-5,100
-70% -$318K ﹤0.01% 4848
2025
Q1 		$478K Sell
7,300
-14,000
-66% -$948K ﹤0.01% 3450
2024
Q4 		$1.63M Buy
21,300
+20,000
+1,538% +$1.73M ﹤0.01% 2377
2024
Q3 		$108K Buy
+1,300
New +$86.6K ﹤0.01% 5141
2024
Q2 		– Sell
-6,000
Closed -$417K – 8644
2024
Q1 		$417K Sell
6,000
-41,100
-87% -$2.61M ﹤0.01% 4025
2023
Q4 		$2.61M Buy
+47,100
New +$2.12M ﹤0.01% 2142
2023
Q3 		– Sell
-100
Closed -$3K – 8521
2023
Q2 		$3K Sell
100
-19,400
-99% -$742K ﹤0.01% 8161
2023
Q1 		$600K Buy
19,500
+16,600
+572% +$504K ﹤0.01% 3085
2022
Q4 		$89K Sell
2,900
-100
-3% -$2.29K ﹤0.01% 5213
2022
Q3 		$56K Buy
+3,000
New +$57.4K ﹤0.01% 6268

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

Simplex Trading's ACLX Position: Q1 2026 in Review

Simplex Trading sold out of Arcellx (ACLX) in Q1 2026, closing a stake of 3,414 shares — an estimated $301K sold.

Simplex Trading first reported a position in ACLX in Q3 2022 and held it in 5 quarters. The position peaked at $304K in Q4 2023. 239 funds tracked by Wall St. Rank hold ACLX as of Q1 2026.

  • Simplex Trading reported no remaining Arcellx position as of Q1 2026 after selling out during the quarter.
  • Simplex Trading sold 3,414 Arcellx shares in Q1 2026, an estimated $301K.
  • Simplex Trading first reported a position in Arcellx in Q3 2022 and held it in 5 quarters.
  • Simplex Trading's Arcellx position peaked at $304K in Q4 2023.
  • 239 funds tracked by Wall St. Rank held Arcellx as of Q1 2026.

Based on Simplex Trading's 13F filing for Q1 2026, filed 14 May 2026.