Security record · archived quarter
ACLX
Arcellx, Inc. · Healthcare · Biotechnology
90Tracked holders
+2Δ holders
26.91MShares held
$1.75BReported value
+4New positions
−1Exits
Momentum inputs (comparable managers):
holder breadth +2.3% ·
share flow -3.7% ·
net new positions +3.3%
— formula
Ownership fragmentation — more holders, smaller aggregate stake
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q4 2025
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 · Q4 2025
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | The Vanguard Group ✦ (passive) | 4.08M | +4.5% | $266.12M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 2 | The Vanguard Group ✦ (passive) | 4.08M | +4.5% | $266.12M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 3 | The Vanguard Group ✦ (passive) | 4.08M | +4.5% | $266.12M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 4 | The Vanguard Group ✦ (passive) | 4.08M | +4.5% | $266.12M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 5 | The Vanguard Group ✦ (passive) | 4.08M | +4.5% | $266.12M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 6 | Fidelity (FMR) ✦ | 3.56M | -38.1% | $232.36M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 7 | Fidelity (FMR) ✦ | 3.56M | -38.1% | $232.36M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 8 | Fidelity (FMR) ✦ | 3.56M | -38.1% | $232.36M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 9 | Fidelity (FMR) ✦ | 3.56M | -38.1% | $232.36M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 10 | Fidelity (FMR) ✦ | 3.56M | -38.1% | $232.36M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 11 | BlackRock ✦ (passive) | 3.55M | +4.8% | $231.38M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 12 | BlackRock ✦ (passive) | 3.55M | +4.8% | $231.38M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 13 | BlackRock ✦ (passive) | 3.55M | +4.8% | $231.38M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 14 | BlackRock ✦ (passive) | 3.55M | +4.8% | $231.38M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 15 | BlackRock ✦ (passive) | 3.55M | +4.8% | $231.38M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 16 | BlackRock ✦ (passive) | 3.55M | +4.8% | $231.38M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 17 | BlackRock ✦ (passive) | 3.55M | +4.8% | $231.38M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 18 | BlackRock ✦ (passive) | 3.55M | +4.8% | $231.38M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 19 | BlackRock ✦ (passive) | 3.55M | +4.8% | $231.38M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 20 | BlackRock ✦ (passive) | 3.55M | +4.8% | $231.38M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 21 | BlackRock ✦ (passive) | 3.55M | +4.8% | $231.38M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 22 | BlackRock ✦ (passive) | 3.55M | +4.8% | $231.38M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 23 | BlackRock ✦ (passive) | 3.55M | +4.8% | $231.38M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 24 | BlackRock ✦ (passive) | 3.55M | +4.8% | $231.38M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 25 | BlackRock ✦ (passive) | 3.55M | +4.8% | $231.38M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 26 | BlackRock ✦ (passive) | 3.55M | +4.8% | $231.38M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 27 | BlackRock ✦ (passive) | 3.55M | +4.8% | $231.38M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 28 | State Street Global Advisors ✦ (passive) | 2.00M | +31.0% | $130.30M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 29 | T. Rowe Price ✦ | 1.61M | +27.4% | $105.03M | 0.0% | ▲ Add | 7 | SEC ↗ |
| 30 | T. Rowe Price ✦ | 1.61M | +27.4% | $105.03M | 0.0% | ▲ Add | 7 | SEC ↗ |
| 31 | Citadel Advisors ✦ | 1.50M | +46.9% | $97.81M | 0.1% | ▲ Add | 6 | SEC ↗ |
| 32 | Citadel Advisors ✦ | 1.50M | +46.9% | $97.81M | 0.1% | ▲ Add | 6 | SEC ↗ |
| 33 | JPMorgan Chase ✦ | 1.45M | -17.6% | $94.83M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 34 | JPMorgan Chase ✦ | 1.45M | -17.6% | $94.83M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 35 | JPMorgan Chase ✦ | 1.45M | -17.6% | $94.83M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 36 | JPMorgan Chase ✦ | 1.45M | -17.6% | $94.83M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 37 | JPMorgan Chase ✦ | 1.45M | -17.6% | $94.83M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 38 | JPMorgan Chase ✦ | 1.45M | -17.6% | $94.83M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 39 | JPMorgan Chase ✦ | 1.45M | -17.6% | $94.83M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 40 | Geode Capital Management ✦ (passive) | 958.06K | +3.4% | $62.48M | 0.0% | ▲ Add | 7 | SEC ↗ |
| 41 | Geode Capital Management ✦ (passive) | 958.06K | +3.4% | $62.48M | 0.0% | ▲ Add | 7 | SEC ↗ |
| 42 | Janus Henderson Group Plc | 919.58K | — | $59.96M | 0.0% | n/c | 1 | SEC ↗ |
| 43 | Janus Henderson Group Plc | 919.58K | — | $59.96M | 0.0% | n/c | 1 | SEC ↗ |
| 44 | Janus Henderson Group Plc | 919.58K | — | $59.96M | 0.0% | n/c | 1 | SEC ↗ |
| 45 | Goldman Sachs Group ✦ | 668.48K | +49.1% | $43.58M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 46 | Goldman Sachs Group ✦ | 668.48K | +49.1% | $43.58M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 47 | Bamco Inc /Ny/ | 609.70K | — | $39.75M | 0.1% | n/c | 1 | SEC ↗ |
| 48 | Morgan Stanley ✦ | 518.40K | +19.8% | $33.80M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 49 | Morgan Stanley ✦ | 518.40K | +19.8% | $33.80M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 50 | Morgan Stanley ✦ | 518.40K | +19.8% | $33.80M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 51 | Morgan Stanley ✦ | 518.40K | +19.8% | $33.80M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 52 | Morgan Stanley ✦ | 518.40K | +19.8% | $33.80M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 53 | Morgan Stanley ✦ | 518.40K | +19.8% | $33.80M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 54 | Morgan Stanley ✦ | 518.40K | +19.8% | $33.80M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 55 | Morgan Stanley ✦ | 518.40K | +19.8% | $33.80M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 56 | Bank Of America Corp /De/ | 427.77K | — | $27.89M | 0.0% | n/c | 1 | SEC ↗ |
| 57 | Bank Of America Corp /De/ | 427.77K | — | $27.89M | 0.0% | n/c | 1 | SEC ↗ |
| 58 | Bank Of America Corp /De/ | 427.77K | — | $27.89M | 0.0% | n/c | 1 | SEC ↗ |
| 59 | Bank Of America Corp /De/ | 427.77K | — | $27.89M | 0.0% | n/c | 1 | SEC ↗ |
| 60 | Bank Of America Corp /De/ | 427.77K | — | $27.89M | 0.0% | n/c | 1 | SEC ↗ |
| 61 | Bank Of America Corp /De/ | 427.77K | — | $27.89M | 0.0% | n/c | 1 | SEC ↗ |
| 62 | American Century Companies Inc | 419.08K | — | $27.32M | 0.0% | n/c | 1 | SEC ↗ |
| 63 | Pictet Asset Management Holding SA | 342.61K | — | $22.34M | 0.0% | n/c | 1 | SEC ↗ |
| 64 | Charles Schwab Investment… | 339.81K | — | $22.16M | 0.0% | n/c | 1 | SEC ↗ |
| 65 | Fisher Asset Management ✦ | 322.86K | New | $21.05M | 0.0% | New | 1 | SEC ↗ |
| 66 | Northern Trust Corp | 321.79K | — | $20.98M | 0.0% | n/c | 1 | SEC ↗ |
| 67 | Northern Trust Corp | 321.79K | — | $20.98M | 0.0% | n/c | 1 | SEC ↗ |
| 68 | Northern Trust Corp | 321.79K | — | $20.98M | 0.0% | n/c | 1 | SEC ↗ |
| 69 | Northern Trust Corp | 321.79K | — | $20.98M | 0.0% | n/c | 1 | SEC ↗ |
| 70 | Northern Trust Corp | 321.79K | — | $20.98M | 0.0% | n/c | 1 | SEC ↗ |
| 71 | Northern Trust Corp | 321.79K | — | $20.98M | 0.0% | n/c | 1 | SEC ↗ |
| 72 | UBS Group AG | 316.61K | — | $20.64M | 0.0% | n/c | 1 | SEC ↗ |
| 73 | UBS Group AG | 316.61K | — | $20.64M | 0.0% | n/c | 1 | SEC ↗ |
| 74 | UBS Group AG | 316.61K | — | $20.64M | 0.0% | n/c | 1 | SEC ↗ |
| 75 | UBS Group AG | 316.61K | — | $20.64M | 0.0% | n/c | 1 | SEC ↗ |
| 76 | Td Asset Management Inc | 300.86K | — | $19.62M | 0.0% | n/c | 1 | SEC ↗ |
| 77 | Deutsche Bank Ag\ | 233.59K | — | $15.23M | 0.0% | n/c | 1 | SEC ↗ |
| 78 | Deutsche Bank Ag\ | 233.59K | — | $15.23M | 0.0% | n/c | 1 | SEC ↗ |
| 79 | Deutsche Bank Ag\ | 233.59K | — | $15.23M | 0.0% | n/c | 1 | SEC ↗ |
| 80 | Deutsche Bank Ag\ | 233.59K | — | $15.23M | 0.0% | n/c | 1 | SEC ↗ |
| 81 | Wellington Management ✦ | 214.78K | -7.5% | $14.00M | 0.0% | ▼ Trim | 7 | SEC ↗ |
| 82 | Wellington Management ✦ | 214.78K | -7.5% | $14.00M | 0.0% | ▼ Trim | 7 | SEC ↗ |
| 83 | Wellington Management ✦ | 214.78K | -7.5% | $14.00M | 0.0% | ▼ Trim | 7 | SEC ↗ |
| 84 | Wellington Management ✦ | 214.78K | -7.5% | $14.00M | 0.0% | ▼ Trim | 7 | SEC ↗ |
| 85 | Wellington Management ✦ | 214.78K | -7.5% | $14.00M | 0.0% | ▼ Trim | 7 | SEC ↗ |
| 86 | Wellington Management ✦ | 214.78K | -7.5% | $14.00M | 0.0% | ▼ Trim | 7 | SEC ↗ |
| 87 | Wellington Management ✦ | 214.78K | -7.5% | $14.00M | 0.0% | ▼ Trim | 7 | SEC ↗ |
| 88 | Barclays Plc | 196.77K | — | $12.83M | 0.0% | n/c | 1 | SEC ↗ |
| 89 | Barclays Plc | 196.77K | — | $12.83M | 0.0% | n/c | 1 | SEC ↗ |
| 90 | Voya Investment Management Llc | 168.68K | — | $11.00M | 0.0% | n/c | 1 | SEC ↗ |
| 91 | Voya Investment Management Llc | 168.68K | — | $11.00M | 0.0% | n/c | 1 | SEC ↗ |
| 92 | Voya Investment Management Llc | 168.68K | — | $11.00M | 0.0% | n/c | 1 | SEC ↗ |
| 93 | UBS AM, a distinct business unit of… | 161.03K | — | $10.50M | 0.0% | n/c | 1 | SEC ↗ |
| 94 | UBS AM, a distinct business unit of… | 161.03K | — | $10.50M | 0.0% | n/c | 1 | SEC ↗ |
| 95 | UBS AM, a distinct business unit of… | 161.03K | — | $10.50M | 0.0% | n/c | 1 | SEC ↗ |
| 96 | UBS AM, a distinct business unit of… | 161.03K | — | $10.50M | 0.0% | n/c | 1 | SEC ↗ |
| 97 | UBS AM, a distinct business unit of… | 161.03K | — | $10.50M | 0.0% | n/c | 1 | SEC ↗ |
| 98 | UBS AM, a distinct business unit of… | 161.03K | — | $10.50M | 0.0% | n/c | 1 | SEC ↗ |
| 99 | UBS AM, a distinct business unit of… | 161.03K | — | $10.50M | 0.0% | n/c | 1 | SEC ↗ |
| 100 | UBS AM, a distinct business unit of… | 161.03K | — | $10.50M | 0.0% | n/c | 1 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value — the conviction measure. ✦ = curated manager.
New buyers
| Fisher Asset Management | $21.05M | 0.0% |
Exited
| Capital World Investors | $64.29M | 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: Q4 2025 ·
Methodology ·
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