Security record
ACLX
Arcellx, Inc. · Healthcare · Biotechnology
79Tracked holders
-11Δ holders
20.14MShares held
$2.28BReported value
+11New positions
−23Exits
Momentum inputs (comparable managers):
holder breadth -12.2% ·
share flow -20.2% ·
net new positions -15.2%
— formula
Broad distribution — falling shares and fewer holders
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q1 2026
Ownership over time
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q1 2026 | 79 | -11 | 20.14M | $2.28B | +11 | −23 |
| Q4 2025 | 90 | +2 | 26.91M | $1.75B | +4 | −1 |
| Q3 2025 | 15 | -1 | 21.54M | $1.77B | — | −2 |
| Q2 2025 | 14 | -2 | 18.84M | $1.24B | — | −2 |
| Q1 2025 | 13 | 0 | 6.16M | $404.16M | +1 | −1 |
| Q4 2024 | 13 | +2 | 5.38M | $412.92M | +4 | −2 |
| Q3 2024 | 10 | +1 | 3.34M | $279.00M | +2 | −1 |
| Q2 2024 | 9 | — | 3.07M | $169.41M | — | — |
Who holds it · Q1 2026
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | BlackRock ✦ (passive) | 3.95M | +11.2% | $452.99M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 2 | BlackRock ✦ (passive) | 3.95M | +11.2% | $452.99M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 3 | BlackRock ✦ (passive) | 3.95M | +11.2% | $452.99M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 4 | BlackRock ✦ (passive) | 3.95M | +11.2% | $452.99M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 5 | BlackRock ✦ (passive) | 3.95M | +11.2% | $452.99M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 6 | BlackRock ✦ (passive) | 3.95M | +11.2% | $452.99M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 7 | BlackRock ✦ (passive) | 3.95M | +11.2% | $452.99M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 8 | BlackRock ✦ (passive) | 3.95M | +11.2% | $452.99M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 9 | BlackRock ✦ (passive) | 3.95M | +11.2% | $452.99M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 10 | BlackRock ✦ (passive) | 3.95M | +11.2% | $452.99M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 11 | BlackRock ✦ (passive) | 3.95M | +11.2% | $452.99M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 12 | BlackRock ✦ (passive) | 3.95M | +11.2% | $452.99M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 13 | BlackRock ✦ (passive) | 3.95M | +11.2% | $452.99M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 14 | BlackRock ✦ (passive) | 3.95M | +11.2% | $452.99M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 15 | Vanguard Capital Management Llc | 2.43M | — | $278.46M | 0.0% | n/c | 1 | SEC ↗ |
| 16 | FIL Ltd | 2.34M | New | $268.59M | 0.2% | New | 1 | SEC ↗ |
| 17 | State Street Global Advisors ✦ (passive) | 1.68M | -16.1% | $192.43M | 0.0% | ▼ Trim | 6 | SEC ↗ |
| 18 | Goldman Sachs Group ✦ | 1.31M | +96.3% | $150.66M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 19 | Goldman Sachs Group ✦ | 1.31M | +96.3% | $150.66M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 20 | Geode Capital Management ✦ (passive) | 1.03M | +7.4% | $118.14M | 0.0% | ▲ Add | 8 | SEC ↗ |
| 21 | Geode Capital Management ✦ (passive) | 1.03M | +7.4% | $118.14M | 0.0% | ▲ Add | 8 | SEC ↗ |
| 22 | Morgan Stanley ✦ | 925.81K | +78.6% | $106.30M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 23 | Morgan Stanley ✦ | 925.81K | +78.6% | $106.30M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 24 | Morgan Stanley ✦ | 925.81K | +78.6% | $106.30M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 25 | Morgan Stanley ✦ | 925.81K | +78.6% | $106.30M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 26 | Morgan Stanley ✦ | 925.81K | +78.6% | $106.30M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 27 | Morgan Stanley ✦ | 925.81K | +78.6% | $106.30M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 28 | Morgan Stanley ✦ | 925.81K | +78.6% | $106.30M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 29 | Morgan Stanley ✦ | 925.81K | +78.6% | $106.30M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 30 | JPMorgan Chase ✦ | 593.57K | -59.2% | $68.12M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 31 | JPMorgan Chase ✦ | 593.57K | -59.2% | $68.12M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 32 | JPMorgan Chase ✦ | 593.57K | -59.2% | $68.12M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 33 | JPMorgan Chase ✦ | 593.57K | -59.2% | $68.12M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 34 | JPMorgan Chase ✦ | 593.57K | -59.2% | $68.12M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 35 | JPMorgan Chase ✦ | 593.57K | -59.2% | $68.12M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 36 | JPMorgan Chase ✦ | 593.57K | -59.2% | $68.12M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 37 | JPMorgan Chase ✦ | 593.57K | -59.2% | $68.12M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 38 | JPMorgan Chase ✦ | 593.57K | -59.2% | $68.12M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 39 | Millennium Management ✦ | 502.85K | +5600.6% | $57.74M | 0.0% | ▲ Add | 6 | SEC ↗ |
| 40 | Balyasny Asset Management L.P. | 479.76K | New | $55.09M | 0.1% | New | 1 | SEC ↗ |
| 41 | Tudor Investment Corp Et Al | 462.59K | +905.0% | $53.11M | 0.3% | ▲ Add | 2 | SEC ↗ |
| 42 | Bank Of America Corp /De/ | 452.33K | +5.7% | $51.94M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 43 | Bank Of America Corp /De/ | 452.33K | +5.7% | $51.94M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 44 | Bank Of America Corp /De/ | 452.33K | +5.7% | $51.94M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 45 | Bank Of America Corp /De/ | 452.33K | +5.7% | $51.94M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 46 | Northern Trust Corp | 350.06K | +8.8% | $40.19M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 47 | Northern Trust Corp | 350.06K | +8.8% | $40.19M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 48 | Northern Trust Corp | 350.06K | +8.8% | $40.19M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 49 | Northern Trust Corp | 350.06K | +8.8% | $40.19M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 50 | Northern Trust Corp | 350.06K | +8.8% | $40.19M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 51 | Charles Schwab Investment… | 346.09K | +1.9% | $39.74M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 52 | Alliancebernstein L.P. | 544.23K | +1234.2% | $35.48M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 53 | Qube Research & Technologies Ltd | 303.85K | +210.3% | $34.89M | 0.1% | ▲ Add | 2 | SEC ↗ |
| 54 | LMR Partners LLP | 212.50K | New | $24.40M | 0.3% | New | 1 | SEC ↗ |
| 55 | LMR Partners LLP | 212.50K | New | $24.40M | 0.3% | New | 1 | SEC ↗ |
| 56 | Barclays Plc | 207.64K | +5.5% | $23.84M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 57 | Barclays Plc | 207.64K | +5.5% | $23.84M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 58 | Barclays Plc | 207.64K | +5.5% | $23.84M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 59 | Soros Fund Management ✦ | 200.00K | New | $22.96M | 0.4% | New | 1 | SEC ↗ |
| 60 | UBS Group AG | 194.71K | -38.5% | $22.36M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 61 | UBS Group AG | 194.71K | -38.5% | $22.36M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 62 | UBS Group AG | 194.71K | -38.5% | $22.36M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 63 | Man Group plc | 180.00K | +5318.4% | $20.67M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 64 | Man Group plc | 180.00K | +5318.4% | $20.67M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 65 | Bnp Paribas Financial Markets | 151.56K | +4104.1% | $17.40M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 66 | Bank of New York Mellon Corp | 143.10K | +16.2% | $16.43M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 67 | Bank of New York Mellon Corp | 143.10K | +16.2% | $16.43M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 68 | Bank of New York Mellon Corp | 143.10K | +16.2% | $16.43M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 69 | Bank of New York Mellon Corp | 143.10K | +16.2% | $16.43M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 70 | Bank of New York Mellon Corp | 143.10K | +16.2% | $16.43M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 71 | Bank of New York Mellon Corp | 143.10K | +16.2% | $16.43M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 72 | Bank of New York Mellon Corp | 143.10K | +16.2% | $16.43M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 73 | Bank of New York Mellon Corp | 143.10K | +16.2% | $16.43M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 74 | Fidelity (FMR) ✦ | 119.38K | -96.7% | $13.71M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 75 | Fidelity (FMR) ✦ | 119.38K | -96.7% | $13.71M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 76 | Fidelity (FMR) ✦ | 119.38K | -96.7% | $13.71M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 77 | Renaissance Technologies ✦ | 96.40K | New | $11.07M | 0.0% | New | 1 | SEC ↗ |
| 78 | Janus Henderson Group Plc | 90.28K | -90.2% | $10.37M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 79 | Nuveen, LLC | 85.29K | +4.1% | $9.79M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 80 | Nuveen, LLC | 85.29K | +4.1% | $9.79M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 81 | Deutsche Bank Ag\ | 80.66K | -65.5% | $9.26M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 82 | Deutsche Bank Ag\ | 80.66K | -65.5% | $9.26M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 83 | Deutsche Bank Ag\ | 80.66K | -65.5% | $9.26M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 84 | Deutsche Bank Ag\ | 80.66K | -65.5% | $9.26M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 85 | Russell Investments Group, Ltd. | 61.91K | -52.6% | $7.11M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 86 | Russell Investments Group, Ltd. | 61.91K | -52.6% | $7.11M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 87 | UBS AM, a distinct business unit of… | 57.29K | -64.4% | $6.58M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 88 | UBS AM, a distinct business unit of… | 57.29K | -64.4% | $6.58M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 89 | UBS AM, a distinct business unit of… | 57.29K | -64.4% | $6.58M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 90 | UBS AM, a distinct business unit of… | 57.29K | -64.4% | $6.58M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 91 | UBS AM, a distinct business unit of… | 57.29K | -64.4% | $6.58M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 92 | UBS AM, a distinct business unit of… | 57.29K | -64.4% | $6.58M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 93 | UBS AM, a distinct business unit of… | 57.29K | -64.4% | $6.58M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 94 | UBS AM, a distinct business unit of… | 57.29K | -64.4% | $6.58M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 95 | UBS AM, a distinct business unit of… | 57.29K | -64.4% | $6.58M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 96 | Swiss National Bank | 54.70K | 0.0% | $6.28M | 0.0% | Held | 2 | SEC ↗ |
| 97 | Invesco Ltd. | 47.28K | +17.1% | $5.43M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 98 | Invesco Ltd. | 47.28K | +17.1% | $5.43M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 99 | Invesco Ltd. | 47.28K | +17.1% | $5.43M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 100 | Invesco Ltd. | 47.28K | +17.1% | $5.43M | 0.0% | ▲ Add | 2 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value — the conviction measure. ✦ = curated manager.
New buyers
| FIL Ltd | $268.59M | 0.2% |
| Balyasny Asset Management L.P. | $55.09M | 0.1% |
| LMR Partners LLP | $24.40M | 0.3% |
| LMR Partners LLP | $24.40M | 0.3% |
| Soros Fund Management | $22.96M | 0.4% |
| Renaissance Technologies | $11.07M | 0.0% |
Exited
| Bamco Inc /Ny/ | $39.75M | was 0.1% |
| American Century Companies Inc | $27.32M | was 0.0% |
| Fisher Asset Management | $21.05M | was 0.0% |
| Td Asset Management Inc | $19.62M | was 0.0% |
| Wellington Management | $14.00M | was 0.0% |
| Raymond James Financial Inc | $7.79M | was 0.0% |
| Aberdeen Group plc | $3.94M | was 0.0% |
| Jane Street Group, Llc | $3.56M | was 0.0% |
| D. E. Shaw & Co. | $1.64M | was 0.0% |
| First Trust Advisors Lp | $1.36M | was 0.0% |
| Norges Bank | $1.09M | was 0.0% |
| HighTower Advisors, LLC | $818,782 | was 0.0% |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 236 holders, 55.96M shares, $5.94B reported. This is a different, older period than the tracked-universe figures above and the two are never mixed.
Frequently co-owned
What else this security's tracked holders most often hold — shared-ownership counts, not fundamental relationships.
Provenance: Ownership from parsed 13F common-stock positions (tracked universe, comparable sets for changes); insider rows from Forms 3/4/5; stakes from Schedules 13D/13G; every filing links to its original on SEC EDGAR.
Reporting period: Q1 2026 ·
Methodology ·
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