Security record · archived quarter
ACLX
Arcellx, Inc. · Healthcare · Biotechnology
15Tracked holders
-1Δ holders
21.54MShares held
$1.77BReported value
+0New positions
−2Exits
Momentum inputs (comparable managers):
holder breadth -6.2% ·
share flow +0.3% ·
net new positions -13.3%
— formula
Concentrated accumulation — rising shares among fewer holders
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q3 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 · Q3 2025
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | Fidelity (FMR) ✦ | 5.76M | -3.5% | $473.00M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 2 | Fidelity (FMR) ✦ | 5.76M | -3.5% | $473.00M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 3 | Fidelity (FMR) ✦ | 5.76M | -3.5% | $473.00M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 4 | Fidelity (FMR) ✦ | 5.76M | -3.5% | $473.00M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 5 | Fidelity (FMR) ✦ | 5.76M | -3.5% | $473.00M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 6 | The Vanguard Group ✦ (passive) | 3.91M | -1.0% | $320.77M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 7 | The Vanguard Group ✦ (passive) | 3.91M | -1.0% | $320.77M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 8 | The Vanguard Group ✦ (passive) | 3.91M | -1.0% | $320.77M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 9 | The Vanguard Group ✦ (passive) | 3.91M | -1.0% | $320.77M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 10 | The Vanguard Group ✦ (passive) | 3.91M | -1.0% | $320.77M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 11 | BlackRock ✦ (passive) | 3.39M | -2.3% | $278.15M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 12 | BlackRock ✦ (passive) | 3.39M | -2.3% | $278.15M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 13 | BlackRock ✦ (passive) | 3.39M | -2.3% | $278.15M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 14 | BlackRock ✦ (passive) | 3.39M | -2.3% | $278.15M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 15 | BlackRock ✦ (passive) | 3.39M | -2.3% | $278.15M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 16 | BlackRock ✦ (passive) | 3.39M | -2.3% | $278.15M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 17 | BlackRock ✦ (passive) | 3.39M | -2.3% | $278.15M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 18 | BlackRock ✦ (passive) | 3.39M | -2.3% | $278.15M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 19 | BlackRock ✦ (passive) | 3.39M | -2.3% | $278.15M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 20 | BlackRock ✦ (passive) | 3.39M | -2.3% | $278.15M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 21 | BlackRock ✦ (passive) | 3.39M | -2.3% | $278.15M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 22 | BlackRock ✦ (passive) | 3.39M | -2.3% | $278.15M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 23 | BlackRock ✦ (passive) | 3.39M | -2.3% | $278.15M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 24 | BlackRock ✦ (passive) | 3.39M | -2.3% | $278.15M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 25 | BlackRock ✦ (passive) | 3.39M | -2.3% | $278.15M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 26 | BlackRock ✦ (passive) | 3.39M | -2.3% | $278.15M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 27 | JPMorgan Chase ✦ | 1.77M | — | $144.91M | 0.0% | n/c | 1 | SEC ↗ |
| 28 | JPMorgan Chase ✦ | 1.77M | — | $144.91M | 0.0% | n/c | 1 | SEC ↗ |
| 29 | JPMorgan Chase ✦ | 1.77M | — | $144.91M | 0.0% | n/c | 1 | SEC ↗ |
| 30 | JPMorgan Chase ✦ | 1.77M | — | $144.91M | 0.0% | n/c | 1 | SEC ↗ |
| 31 | JPMorgan Chase ✦ | 1.77M | — | $144.91M | 0.0% | n/c | 1 | SEC ↗ |
| 32 | JPMorgan Chase ✦ | 1.77M | — | $144.91M | 0.0% | n/c | 1 | SEC ↗ |
| 33 | JPMorgan Chase ✦ | 1.77M | — | $144.91M | 0.0% | n/c | 1 | SEC ↗ |
| 34 | JPMorgan Chase ✦ | 1.77M | — | $144.91M | 0.0% | n/c | 1 | SEC ↗ |
| 35 | JPMorgan Chase ✦ | 1.77M | — | $144.91M | 0.0% | n/c | 1 | SEC ↗ |
| 36 | JPMorgan Chase ✦ | 1.77M | — | $144.91M | 0.0% | n/c | 1 | SEC ↗ |
| 37 | JPMorgan Chase ✦ | 1.77M | — | $144.91M | 0.0% | n/c | 1 | SEC ↗ |
| 38 | JPMorgan Chase ✦ | 1.77M | — | $144.91M | 0.0% | n/c | 1 | SEC ↗ |
| 39 | JPMorgan Chase ✦ | 1.77M | — | $144.91M | 0.0% | n/c | 1 | SEC ↗ |
| 40 | JPMorgan Chase ✦ | 1.77M | — | $144.91M | 0.0% | n/c | 1 | SEC ↗ |
| 41 | JPMorgan Chase ✦ | 1.77M | — | $144.91M | 0.0% | n/c | 1 | SEC ↗ |
| 42 | JPMorgan Chase ✦ | 1.77M | — | $144.91M | 0.0% | n/c | 1 | SEC ↗ |
| 43 | State Street Global Advisors ✦ (passive) | 1.53M | -4.2% | $125.29M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 44 | T. Rowe Price ✦ | 1.26M | -12.1% | $103.78M | 0.0% | ▼ Trim | 6 | SEC ↗ |
| 45 | T. Rowe Price ✦ | 1.26M | -12.1% | $103.78M | 0.0% | ▼ Trim | 6 | SEC ↗ |
| 46 | Citadel Advisors ✦ | 1.02M | +414.9% | $83.86M | 0.1% | ▲ Add | 5 | SEC ↗ |
| 47 | Citadel Advisors ✦ | 1.02M | +414.9% | $83.86M | 0.1% | ▲ Add | 5 | SEC ↗ |
| 48 | Geode Capital Management ✦ (passive) | 926.30K | -3.7% | $76.06M | 0.0% | ▼ Trim | 6 | SEC ↗ |
| 49 | Geode Capital Management ✦ (passive) | 926.30K | -3.7% | $76.06M | 0.0% | ▼ Trim | 6 | SEC ↗ |
| 50 | Capital World Investors ✦ | 783.01K | 0.0% | $64.29M | 0.0% | Held | 4 | SEC ↗ |
| 51 | Goldman Sachs Group ✦ | 448.44K | — | $36.82M | 0.0% | n/c | 1 | SEC ↗ |
| 52 | Goldman Sachs Group ✦ | 448.44K | — | $36.82M | 0.0% | n/c | 1 | SEC ↗ |
| 53 | Morgan Stanley ✦ | 432.88K | — | $35.54M | 0.0% | n/c | 1 | SEC ↗ |
| 54 | Morgan Stanley ✦ | 432.88K | — | $35.54M | 0.0% | n/c | 1 | SEC ↗ |
| 55 | Morgan Stanley ✦ | 432.88K | — | $35.54M | 0.0% | n/c | 1 | SEC ↗ |
| 56 | Morgan Stanley ✦ | 432.88K | — | $35.54M | 0.0% | n/c | 1 | SEC ↗ |
| 57 | Morgan Stanley ✦ | 432.88K | — | $35.54M | 0.0% | n/c | 1 | SEC ↗ |
| 58 | Morgan Stanley ✦ | 432.88K | — | $35.54M | 0.0% | n/c | 1 | SEC ↗ |
| 59 | Morgan Stanley ✦ | 432.88K | — | $35.54M | 0.0% | n/c | 1 | SEC ↗ |
| 60 | Wellington Management ✦ | 232.20K | -3.8% | $19.06M | 0.0% | ▼ Trim | 6 | SEC ↗ |
| 61 | Wellington Management ✦ | 232.20K | -3.8% | $19.06M | 0.0% | ▼ Trim | 6 | SEC ↗ |
| 62 | Wellington Management ✦ | 232.20K | -3.8% | $19.06M | 0.0% | ▼ Trim | 6 | SEC ↗ |
| 63 | Wellington Management ✦ | 232.20K | -3.8% | $19.06M | 0.0% | ▼ Trim | 6 | SEC ↗ |
| 64 | Wellington Management ✦ | 232.20K | -3.8% | $19.06M | 0.0% | ▼ Trim | 6 | SEC ↗ |
| 65 | Wellington Management ✦ | 232.20K | -3.8% | $19.06M | 0.0% | ▼ Trim | 6 | SEC ↗ |
| 66 | Wellington Management ✦ | 232.20K | -3.8% | $19.06M | 0.0% | ▼ Trim | 6 | SEC ↗ |
| 67 | Millennium Management ✦ | 40.34K | -57.3% | $3.31M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 68 | AQR Capital Management ✦ | 31.71K | +270.6% | $2.60M | 0.0% | ▲ Add | 6 | SEC ↗ |
| 69 | AQR Capital Management ✦ | 31.71K | +270.6% | $2.60M | 0.0% | ▲ Add | 6 | SEC ↗ |
| 70 | AQR Capital Management ✦ | 31.71K | +270.6% | $2.60M | 0.0% | ▲ Add | 6 | SEC ↗ |
| 71 | AQR Capital Management ✦ | 31.71K | +270.6% | $2.60M | 0.0% | ▲ Add | 6 | SEC ↗ |
| 72 | AQR Capital Management ✦ | 31.71K | +270.6% | $2.60M | 0.0% | ▲ Add | 6 | SEC ↗ |
| 73 | Gotham Asset Management ✦ | 9.84K | 0.0% | $808,028 | 0.0% | Held | 6 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value — the conviction measure. ✦ = curated manager.
New buyers
| No new tracked buyers this quarter. |
Exited
| Marshall Wace | $7.36M | was 0.0% |
| Norges Bank | $738,903 | 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: Q3 2025 ·
Methodology ·
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