Who owns Alumis Inc.?
Institutional ownership of ALMS from SEC Form 13F filings across 135 reporting managers. All positions are from one synchronized reporting period — 2026-06-30 books, filed up to 45 days after quarter end — so every row is comparable.
135
13F holders
$1.36B
value, 2026 filers
43.5%
of shares outstanding (53.7M sh)
23
new positions (2026 filers)
Top institutional holders
ordered by shares owned · positions as of 2026-06-30· % of fund = share of the manager's own book · % of co. = share of ALMS's shares outstanding
| # | Manager | Shares | Value | % of fund | % of co. | Δ shares QoQ |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 8.2M | $231.3M | 0.0% | 6.7% | +14.6% |
| 2 | FMR LLC | 6.8M | $190.5M | 0.0% | 5.5% | +595.1% |
| 3 | Deep Track Capital, LP | 6.3M | $178.6M | 2.6% | 5.1% | -6.3% |
| 4 | PRICE T ROWE ASSOCIATES INC /MD/ | 5.2M | $146,325 | 0.0% | 4.2% | +58.2% |
| 5 | VANGUARD CAPITAL MANAGEMENT LLC | 4.2M | $118.6M | 0.0% | 3.4% | -47.7% |
| 6 | Jupiter Topco LLCNEW | 2.4M | $66.2M | 0.0% | 1.9% | new |
| 7 | GEODE CAPITAL MANAGEMENT, LLC | 2.2M | $61.0M | 0.0% | 1.8% | +13.0% |
| 8 | Invesco Ltd. | 1.2M | $33.0M | 0.0% | 1% | -22.4% |
| 9 | PRINCIPAL FINANCIAL GROUP INC | 1.1M | $30.1M | 0.0% | 0.9% | +0.9% |
| 10 | JPMORGAN CHASE & CO | 969,617 | $26.4M | 0.0% | 0.8% | +12.5% |
| 11 | D. E. Shaw & Co., Inc. | 968,234 | $27.2M | 0.0% | 0.8% | +69.2% |
| 12 | UBS Group AG | 951,796 | $26.8M | 0.0% | 0.8% | -68.8% |
| 13 | VANGUARD PORTFOLIO MANAGEMENT LLC | 921,211 | $25.9M | 0.0% | 0.7% | +29.3% |
| 14 | GREAT POINT PARTNERS LLC | 856,061 | $24.1M | 4.6% | 0.7% | 0.0% |
| 15 | GOLDMAN SACHS GROUP INC | 831,897 | $23.4M | 0.0% | 0.7% | +15.9% |
| 16 | NORTHERN TRUST CORP | 723,849 | $20.4M | 0.0% | 0.6% | +28.5% |
| 17 | Sixth Street Partners Management Company, L.P.NEW | 700,134 | $19.7M | 3.4% | 0.6% | new |
| 18 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 700,134 | $19.7M | 0.0% | 0.6% | +10.2% |
| 19 | MILLENNIUM MANAGEMENT LLC | 660,142 | $18.6M | 0.0% | 0.5% | +8.9% |
| 20 | VANGUARD FIDUCIARY TRUST CO | 612,010 | $17.2M | 0.0% | 0.5% | +16.1% |
| 21 | Woodline Partners LPNEW | 486,052 | $13.7M | 0.0% | 0.4% | new |
| 22 | CITIGROUP INC | 385,400 | $10.8M | 0.0% | 0.3% | +289.6% |
| 23 | TWO SIGMA INVESTMENTS, LP | 376,119 | $10.6M | 0.0% | 0.3% | -42.8% |
| 24 | MARSHALL WACE, LLP | 368,014 | $10.4M | 0.0% | 0.3% | -68.6% |
| 25 | MORGAN STANLEY | 321,163 | $9.0M | 0.0% | 0.3% | +42.7% |
Source: SEC Form 13F-HR filings (institutional managers over $100M in US-listed positions). 13Fs disclose long positions only, up to 45 days after quarter end; each manager's latest filed quarter is shown per row and dollar values are the manager's filed marks. Aggregates labeled "2026 filers" count only managers whose latest book is a 2026 quarter. Related: valuation · options positioning · supply chain. Research, not investment advice.