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 ↗ ×14 |
| 2 | Vanguard Capital Management Llc | 2.43M | — | $278.46M | 0.0% | n/c | 1 | SEC ↗ |
| 3 | FIL Ltd | 2.34M | New | $268.59M | 0.2% | New | 1 | SEC ↗ |
| 4 | State Street Global Advisors ✦ (passive) | 1.68M | -16.1% | $192.43M | 0.0% | ▼ Trim | 6 | SEC ↗ |
| 5 | Goldman Sachs Group ✦ | 1.31M | +96.3% | $150.66M | 0.0% | ▲ Add | 3 | SEC ↗ ×2 |
| 6 | Geode Capital Management ✦ (passive) | 1.03M | +7.4% | $118.14M | 0.0% | ▲ Add | 8 | SEC ↗ ×2 |
| 7 | Morgan Stanley ✦ | 925.81K | +78.6% | $106.30M | 0.0% | ▲ Add | 3 | SEC ↗ ×8 |
| 8 | JPMorgan Chase ✦ | 593.57K | -59.2% | $68.12M | 0.0% | ▼ Trim | 3 | SEC ↗ ×9 |
| 9 | Millennium Management ✦ | 502.85K | +5600.6% | $57.74M | 0.0% | ▲ Add | 6 | SEC ↗ |
| 10 | Balyasny Asset Management L.P. | 479.76K | New | $55.09M | 0.1% | New | 1 | SEC ↗ |
| 11 | Tudor Investment Corp Et Al | 462.59K | +905.0% | $53.11M | 0.3% | ▲ Add | 2 | SEC ↗ |
| 12 | Bank Of America Corp /De/ | 452.33K | +5.7% | $51.94M | 0.0% | ▲ Add | 2 | SEC ↗ ×4 |
| 13 | Northern Trust Corp | 350.06K | +8.8% | $40.19M | 0.0% | ▲ Add | 2 | SEC ↗ ×5 |
| 14 | Charles Schwab Investment… | 346.09K | +1.9% | $39.74M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 15 | Alliancebernstein L.P. | 544.23K | +1234.2% | $35.48M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 16 | Qube Research & Technologies Ltd | 303.85K | +210.3% | $34.89M | 0.1% | ▲ Add | 2 | SEC ↗ |
| 17 | LMR Partners LLP | 212.50K | New | $24.40M | 0.3% | New | 1 | SEC ↗ ×2 |
| 18 | Barclays Plc | 207.64K | +5.5% | $23.84M | 0.0% | ▲ Add | 2 | SEC ↗ ×3 |
| 19 | Soros Fund Management ✦ | 200.00K | New | $22.96M | 0.4% | New | 1 | SEC ↗ |
| 20 | UBS Group AG | 194.71K | -38.5% | $22.36M | 0.0% | ▼ Trim | 2 | SEC ↗ ×3 |
| 21 | Man Group plc | 180.00K | +5318.4% | $20.67M | 0.0% | ▲ Add | 2 | SEC ↗ ×2 |
| 22 | Bnp Paribas Financial Markets | 151.56K | +4104.1% | $17.40M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 23 | Bank of New York Mellon Corp | 143.10K | +16.2% | $16.43M | 0.0% | ▲ Add | 2 | SEC ↗ ×8 |
| 24 | Fidelity (FMR) ✦ | 119.38K | -96.7% | $13.71M | 0.0% | ▼ Trim | 4 | SEC ↗ ×3 |
| 25 | Renaissance Technologies ✦ | 96.40K | New | $11.07M | 0.0% | New | 1 | SEC ↗ |
| 26 | Janus Henderson Group Plc | 90.28K | -90.2% | $10.37M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 27 | Nuveen, LLC | 85.29K | +4.1% | $9.79M | 0.0% | ▲ Add | 2 | SEC ↗ ×2 |
| 28 | Deutsche Bank Ag\ | 80.66K | -65.5% | $9.26M | 0.0% | ▼ Trim | 2 | SEC ↗ ×4 |
| 29 | Russell Investments Group, Ltd. | 61.91K | -52.6% | $7.11M | 0.0% | ▼ Trim | 2 | SEC ↗ ×2 |
| 30 | UBS AM, a distinct business unit of… | 57.29K | -64.4% | $6.58M | 0.0% | ▼ Trim | 2 | SEC ↗ ×9 |
| 31 | Swiss National Bank | 54.70K | 0.0% | $6.28M | 0.0% | Held | 2 | SEC ↗ |
| 32 | Invesco Ltd. | 47.28K | +17.1% | $5.43M | 0.0% | ▲ Add | 2 | SEC ↗ ×5 |
| 33 | T. Rowe Price ✦ | 45.95K | -97.2% | $5.28M | 0.0% | ▼ Trim | 8 | SEC ↗ ×2 |
| 34 | Rhumbline Advisers | 45.21K | +1.9% | $5.19M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 35 | California State Teachers… | 34.89K | +28.7% | $4.01M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 36 | Healthcare Of Ontario Pension Plan… | 30.00K | New | $3.44M | 0.0% | New | 1 | SEC ↗ |
| 37 | Squarepoint Ops LLC | 27.14K | -45.6% | $3.12M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 38 | Legal & General Group Plc | 21.89K | -26.0% | $2.51M | 0.0% | ▼ Trim | 2 | SEC ↗ ×3 |
| 39 | Citadel Advisors ✦ | 21.81K | -98.5% | $2.50M | 0.0% | ▼ Trim | 7 | SEC ↗ ×2 |
| 40 | MIRAE ASSET GLOBAL ETFS HOLDINGS… | 20.81K | +4.0% | $2.39M | 0.0% | ▲ Add | 2 | SEC ↗ ×2 |
| 41 | Susquehanna International Group, Llp | 19.20K | +164.6% | $2.20M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 42 | State Of Wisconsin Investment Board | 17.43K | -16.7% | $2.00M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 43 | Creative Planning | 15.65K | +113.9% | $1.80M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 44 | Wells Fargo & Company/Mn | 14.39K | -73.5% | $1.65M | 0.0% | ▼ Trim | 2 | SEC ↗ ×3 |
| 45 | New York State Common Retirement… | 12.52K | +7.7% | $1.44M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 46 | Zurcher Kantonalbank (Zurich… | 12.31K | +10.8% | $1.41M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 47 | Manufacturers Life Insurance… | 11.96K | -79.1% | $1.37M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 48 | ProShare Advisors LLC | 11.38K | +29.0% | $1.31M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 49 | State Board Of Administration Of… | 10.85K | 0.0% | $1.25M | 0.0% | Held | 2 | SEC ↗ |
| 50 | Point72 Asset Management ✦ | 9.84K | New | $1.13M | 0.0% | New | 1 | SEC ↗ |
| 51 | Nomura Holdings Inc | 9.30K | New | $1.07M | 0.0% | New | 1 | SEC ↗ |
| 52 | Citigroup Inc | 7.82K | -95.0% | $897,433 | 0.0% | ▼ Trim | 2 | SEC ↗ ×2 |
| 53 | Voya Investment Management Llc | 6.38K | -96.2% | $732,322 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 54 | Mariner, LLC | 6.28K | +101.7% | $721,070 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 55 | Prudential Financial Inc | 6.04K | -63.9% | $693,513 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 56 | Quantinno Capital Management LP | 5.28K | +36.3% | $605,905 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 57 | Victory Capital Management Inc | 5.17K | -90.6% | $593,390 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 58 | Sei Investments Co | 4.49K | -71.3% | $515,765 | 0.0% | ▼ Trim | 2 | SEC ↗ ×2 |
| 59 | Pictet Asset Management Holding SA | 4.23K | -98.8% | $485,574 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 60 | Mercer Global Advisors Inc /Adv | 4.06K | -1.2% | $465,825 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 61 | Ameriprise Financial Inc | 3.87K | -94.4% | $444,238 | 0.0% | ▼ Trim | 2 | SEC ↗ ×2 |
| 62 | Mirae Asset Global Investments Co.… | 3.05K | +8.5% | $350,201 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 63 | Principal Financial Group Inc | 2.76K | New | $317,362 | 0.0% | New | 1 | SEC ↗ |
| 64 | CIBC Asset Management Inc | 2.51K | New | $287,969 | 0.0% | New | 1 | SEC ↗ |
| 65 | Universal- Beteiligungs- und… | 2.15K | -45.6% | $246,634 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 66 | CIBC Bancorp USA Inc. | 1.94K | — | $222,751 | 0.0% | n/c | 1 | SEC ↗ ×2 |
| 67 | Jones Financial Companies Lllp | 1.94K | +100.3% | $221,922 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 68 | Osaic Holdings, Inc. | 954 | +914.9% | $109,538 | 0.0% | ▲ Add | 2 | SEC ↗ ×3 |
| 69 | Us Bancorp \De\ | 909 | -4.1% | $104,371 | 0.0% | ▼ Trim | 2 | SEC ↗ ×2 |
| 70 | Pnc Financial Services Group, Inc. | 580 | +36.5% | $66,595 | 0.0% | ▲ Add | 2 | SEC ↗ ×3 |
| 71 | BNP Paribas Asset Management… | 485 | +32.5% | $55,688 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 72 | Rockefeller Capital Management L.P. | 484 | +399.0% | $55,573 | 0.0% | ▲ Add | 2 | SEC ↗ ×2 |
| 73 | Group One Trading Llc | 462 | -76.5% | $53,047 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 74 | Fifth Third Bancorp | 382 | New | $43,832 | 0.0% | New | 1 | SEC ↗ |
| 75 | Optiver Holding B.V. | 226 | +413.6% | $25,949 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 76 | Cwm, Llc | 77 | -61.7% | $8,841 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 77 | Royal Bank Of Canada | 59 | -94.2% | $7,000 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 78 | Assetmark, Inc | 18 | -64.0% | $2,067 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 79 | Northwestern Mutual Wealth… | 16 | -36.0% | $1,837 | 0.0% | ▼ Trim | 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% |
| Soros Fund Management | $22.96M | 0.4% |
| Renaissance Technologies | $11.07M | 0.0% |
| Healthcare Of Ontario Pension… | $3.44M | 0.0% |
| Point72 Asset Management | $1.13M | 0.0% |
| Nomura Holdings Inc | $1.07M | 0.0% |
| Principal Financial Group Inc | $317,362 | 0.0% |
| CIBC Asset Management Inc | $287,969 | 0.0% |
| Fifth Third Bancorp | $43,832 | 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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