ARCELLX INC (ACLX)
Institutional ownership reported to the SEC as of Q2 2026, across 18 quarters.
2
Reporting holders
$4.9K
Reported value
0.0%
Held as options
-228
Holder change
Options share is the part of reported value carried in derivative lines rather than shares. A high figure means institutions are expressing a view on this security without owning much of it.
Holders
| Filer | Value | Shares | Their book | Held | Change |
|---|---|---|---|---|---|
| DekaBank Deutsche Girozentrale | $3.4K | 30,000 | 0.01% | 15q | HELD |
| IFP Advisors, Inc | $1.5K | 13 | 0.00% | 7q | +8.3% |
Five percent filings
Anyone crossing 5% of a company must say so within days - far sooner than the next quarterly holdings report. A 13D declares an intent to influence the company; a 13G is the passive version. See all activist filings →
| Filed | Form | Filer | % of class |
|---|---|---|---|
| 2026-08-14 | 13G/A | Paradigm BioCapital Advisors LPwith 3 co-filers | 0.0% |
Quarter by quarter
Coverage begins with the quarter ending 2018-12-31. Earlier filings exist only as occasional late amendments, too sparse to describe a market, so they are not shown.
| Quarter | Holders | Value | Shares | New | Added | Trimmed | Options |
|---|---|---|---|---|---|---|---|
| Q2 2026 | 2 | $4.9K | 30,013 | 0 | 1 | 0 | 0.0% |
| Q1 2026 | 230 | $6.2B | 54,554,134 | 83 | 59 | 55 | 2.8% |
| Q4 2025 | 203 | $3.6B | 53,916,620 | 40 | 66 | 66 | 1.1% |
| Q3 2025 | 196 | $4.6B | 55,829,752 | 28 | 52 | 71 | 0.4% |
| Q2 2025 | 192 | $3.8B | 57,586,869 | 28 | 56 | 75 | 2.0% |
| Q1 2025 | 191 | $3.9B | 57,609,061 | 25 | 66 | 66 | 1.8% |
| Q4 2024 | 198 | $4.3B | 55,151,287 | 34 | 69 | 54 | 1.6% |
| Q3 2024 | 170 | $4.1B | 45,786,914 | 37 | 56 | 55 | 6.5% |
| Q2 2024 | 153 | $2.6B | 46,659,061 | 20 | 70 | 47 | 0.4% |
| Q1 2024 | 165 | $3.2B | 45,354,213 | 33 | 64 | 51 | 0.5% |
| Q4 2023 | 143 | $2.5B | 44,474,826 | 33 | 50 | 39 | 1.1% |
| Q3 2023 | 116 | $1.6B | 44,380,901 | 10 | 52 | 34 | 0.1% |
| Q2 2023 | 122 | $1.4B | 45,299,489 | 31 | 60 | 29 | 0.2% |
| Q1 2023 | 100 | $1.4B | 45,224,500 | 13 | 40 | 37 | 0.1% |
| Q4 2022 | 100 | $1.1B | 35,682,105 | 42 | 29 | 21 | 0.2% |
| Q3 2022 | 74 | $804.5M | 42,814,123 | 21 | 35 | 15 | 0.1% |
| Q2 2022 | 67 | $621.5M | 34,934,209 | 23 | 24 | 13 | 0.0% |
| Q1 2022 | 48 | $357.9M | 26,873,190 | 47 | 0 | 0 | 0.0% |