BlackRock’s Arcellx ACLX Stock Holding History
Bought
Maintained
Sold
| Quarter | Market Value | Status | Shares |
Change in Stake | Trade Value | Portfolio Weight | Portfolio Position | |
|---|---|---|---|---|---|---|---|---|
|
2026
Q2 | – | Sell |
-3,945,238
| Closed | -$453M | – | 5697 |
|
|
2026
Q1 | $453M | Buy |
3,945,238
+396,451
| +11% | +$35M | 0.01% | 1189 |
|
|
2025
Q4 | $231M | Buy |
3,548,787
+160,891
| +5% | +$12.8M | ﹤0.01% | 1587 |
|
|
2025
Q3 | $278M | Sell |
3,387,896
-80,288
| -2% | -$5.78M | ﹤0.01% | 1463 |
|
|
2025
Q2 | $228M | Sell |
3,468,184
-499,385
| -13% | -$31.1M | ﹤0.01% | 1546 |
|
|
2025
Q1 | $260M | Buy |
3,967,569
+113,548
| +3% | +$7.69M | 0.01% | 1442 |
|
|
2024
Q4 | $296M | Sell |
3,854,021
-392,671
| -9% | -$33.9M | 0.01% | 1429 |
|
|
2024
Q3 | $355M | Buy |
4,246,692
+730,328
| +21% | +$48.6M | 0.01% | 1315 |
|
|
2024
Q2 | $194M | Buy |
3,516,364
+450,296
| +15% | +$24.5M | ﹤0.01% | 1636 |
|
|
2024
Q1 | $213M | Buy |
3,066,068
+47,530
| +2% | +$3.01M | 0.01% | 1606 |
|
|
2023
Q4 | $168M | Buy |
3,018,538
+310,876
| +11% | +$14M | ﹤0.01% | 1760 |
|
|
2023
Q3 | $97.2M | Buy |
2,707,662
+105,177
| +4% | +$3.63M | ﹤0.01% | 2010 |
|
|
2023
Q2 | $82.3M | Buy |
2,602,485
+380,128
| +17% | +$14.5M | ﹤0.01% | 2176 |
|
|
2023
Q1 | $68.5M | Buy |
2,222,357
+15,178
| +0.7% | +$460K | ﹤0.01% | 2252 |
|
|
2022
Q4 | $68.4M | Buy |
2,207,179
+401,076
| +22% | +$9.2M | ﹤0.01% | 2254 |
|
|
2022
Q3 | $33.9M | Buy |
1,806,103
+1,203,592
| +200% | +$23M | ﹤0.01% | 2726 |
|
|
2022
Q2 | $10.9M | Buy |
602,511
+102,406
| +20% | +$1.32M | ﹤0.01% | 3465 |
|
|
2022
Q1 | $7.01M | Buy |
+500,105
| New | +$8.36M | ﹤0.01% | 3774 |
|
Other funds holding ACLX
BlackRock's ACLX Position: Q2 2026 in Review
BlackRock sold out of Arcellx (ACLX) in Q2 2026, closing a stake of 3,945,238 shares — an estimated $453M sold.
BlackRock first reported a position in ACLX in Q1 2022 and held it in 17 quarters. The position peaked at $453M in Q1 2026. 2 funds tracked by Wall St. Rank hold ACLX as of Q2 2026.
- BlackRock reported no remaining Arcellx position as of Q2 2026 after selling out during the quarter.
- BlackRock sold 3,945,238 Arcellx shares in Q2 2026, an estimated $453M.
- BlackRock first reported a position in Arcellx in Q1 2022 and held it in 17 quarters.
- BlackRock's Arcellx position peaked at $453M in Q1 2026.
- 2 funds tracked by Wall St. Rank held Arcellx as of Q2 2026.
Based on BlackRock's 13F filing for Q2 2026, filed 7 Aug 2026.