Mariner
ACLX

Mariner’s Arcellx ACLX Stock Holding History

Mariner’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 		$721K Buy
6,280
+3,167
+102% +$280K ﹤0.01% 2213
2025
Q4 		$206K Sell
3,113
-4,202
-57% -$335K ﹤0.01% 3148
2025
Q3 		$601K Buy
7,315
+1,846
+34% +$133K ﹤0.01% 2285
2025
Q2 		$360K Sell
5,469
-1,596
-23% -$99.4K ﹤0.01% 2576
2025
Q1 		$463K Buy
7,065
+85
+1% +$5.76K ﹤0.01% 2262
2024
Q4 		$535K Buy
6,980
+1,915
+38% +$165K ﹤0.01% 2141
2024
Q3 		$423K Buy
5,065
+1,300
+35% +$86.6K ﹤0.01% 2277
2024
Q2 		$208K Sell
3,765
-2,306
-38% -$125K ﹤0.01% 2771
2024
Q1 		$422K Buy
6,071
+1,372
+29% +$87K ﹤0.01% 2166
2023
Q4 		$261K Buy
+4,699
New +$212K ﹤0.01% 2464

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

Mariner's ACLX Position: Q1 2026 in Review

Mariner increased its Arcellx (ACLX) stake by 102% in Q1 2026, buying an estimated $280K and bringing the position to 6,280 shares worth $721K. The position accounts for ﹤0.01% of the portfolio, ranked #2213.

Mariner first reported a position in ACLX in Q4 2023 and has held it in 10 quarters since. 239 funds tracked by Wall St. Rank hold ACLX as of Q1 2026.

  • Mariner held 6,280 shares of Arcellx worth $721K as of Q1 2026.
  • Mariner bought 3,167 Arcellx shares in Q1 2026, an estimated $280K.
  • Arcellx made up ﹤0.01% of Mariner's portfolio in Q1 2026, its #2213 holding.
  • Mariner first reported a position in Arcellx in Q4 2023 and has held it in 10 quarters since.
  • 239 funds tracked by Wall St. Rank held Arcellx as of Q1 2026.

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