Who owns ALMS?
Institutional ownership of Alumis Inc. from Form 13F, Q2 2026
198 institutional managers reported holding Alumis Inc. (ALMS) in Form 13F filings for Q2 2026, with 118,124,074 shares worth $3.3B. The largest reported holder was AyurMaya Capital Management Company, LP. Managers that filed both quarters added a net 3,066,124 shares (+3.1%). 26 opened new positions and 25 sold out.
- Funds holding
- 198
- Value held
- $3.3B
- New / sold out
- 26 / 25
- Net shares, same filers
- +3.1%
Holdings as of June 30, 2026, the end of Q2 2026. Managers have 45 days after a quarter ends to file Form 13F (by August 14, 2026 for Q2 2026), so positions may have changed since.
Largest holders of ALMS
| Fund | Value | Share of 13F holdings | Shares | Move |
|---|---|---|---|---|
| AyurMaya Capital Management Company, LP | $426M | 12.8% | 15,139,707 | First report |
| BlackRock, Inc. | $231M | 7.0% | 8,218,151 | Added |
| FMR LLC | $190M | 5.7% | 6,769,170 | Added |
| Deep Track Capital, LP | $179M | 5.4% | 6,348,558 | Trimmed |
| Samsara Biocapital, LLC | $179M | 5.4% | 6,345,219 | Unchanged |
| Foresite Capital Management V, LLC | $166M | 5.0% | 5,896,995 | Unchanged |
| Price T Rowe Associates Inc | $146M | 4.4% | 5,199,838 | Added |
| venBio Partners LLC | $127M | 3.8% | 4,528,408 | Unchanged |
| Foresite Capital Management VI LLC | $120M | 3.6% | 4,247,670 | Unchanged |
| Vanguard Capital Management LLC | $119M | 3.6% | 4,215,703 | Added |
| Nextech Invest Ltd. | $99.6M | 3.0% | 3,540,998 | Unchanged |
| Cormorant Asset Management, LP | $92.5M | 2.8% | 3,285,596 | Trimmed |
| Saturn V Capital Management LP | $82.0M | 2.5% | 2,915,443 | Trimmed |
| Octagon Capital Advisors LP | $79.7M | 2.4% | 2,830,700 | Unchanged |
| Jupiter Topco LLC | $66.2M | 2.0% | 2,355,122 | First report |
| State Street Corp | $61.5M | 1.9% | 2,187,266 | Added |
| Geode Capital Management, LLC | $61.0M | 1.8% | 2,168,517 | Added |
| MPM Bioimpact LLC | $56.8M | 1.7% | 2,019,020 | Trimmed |
| Baker Bros. Advisors LP | $56.6M | 1.7% | 2,012,500 | Unchanged |
| SR One Capital Management, LP | $55.2M | 1.7% | 1,959,896 | Unchanged |
| Invesco Ltd. | $33.0M | 1.0% | 1,173,518 | Trimmed |
| Novo Holdings A/S | $31.0M | 0.9% | 1,100,000 | New |
| Principal Financial Group Inc | $30.1M | 0.9% | 1,068,060 | Added |
| D. E. Shaw & Co., Inc. | $27.2M | 0.8% | 968,234 | Added |
| UBS Group AG | $26.8M | 0.8% | 951,796 | Trimmed |
Share of 13F holdings is each fund's shares as a share of the 118,124,074 ALMS shares all 13F filers reported, not of shares outstanding.
Biggest buyers in Q2 2026
- FMR LLC Added+$163M
- Price T Rowe Associates Inc Added+$53.8M
- Novo Holdings A/S New+$31.0M
- BlackRock, Inc. Added+$29.5M
- Woodline Partners LP New+$13.7M
- D. E. Shaw & Co., Inc. Added+$11.1M
- State Street Corp Added+$10.8M
- Citigroup Inc Added+$8.1M
- Geode Capital Management, LLC Added+$7.0M
- Vanguard Portfolio Management LLC Added+$5.9M
Biggest sellers in Q2 2026
- UBS Group AG Trimmed-$59.2M
- Marshall Wace, LLP Trimmed-$22.6M
- Weiss Asset Management LP Trimmed-$22.1M
- Cormorant Asset Management, LP Trimmed-$18.7M
- Yu Fan Trimmed-$14.8M
- Voloridge Investment Management, LLC Trimmed-$12.1M
- Deep Track Capital, LP Trimmed-$11.9M
- Prudential Financial Inc Trimmed-$10.6M
- MPM Bioimpact LLC Trimmed-$10.3M
- Ikarian Capital, LLC Trimmed-$9.7M
The change in shares since the quarter before, adjusted for stock splits and priced at the Q2 2026 value per share. Funds bought $405M and sold $308M; 74 added and 61 trimmed.
Schedule 13D and 13G filings on ALMS
Owners of more than 5% must file within days, so these can be newer than the 13F data.
- 2026-08-06FMR LLC SCHEDULE 13G filed by Alumis Inc.Schedule 13G
- 2026-07-27BlackRock, Inc. SCHEDULE 13G filed by BlackRock Inc.Schedule 13G
- 2025-11-24Samsara BioCapital, L.P. SCHEDULE 13D filed by Alumis Inc.Schedule 13D
Questions about ALMS ownership
- Who owns ALMS stock?
- 198 institutional investment managers reported ALMS positions in their Form 13F filings for Q2 2026, holding 118,124,074 shares worth $3.3B in total. AyurMaya Capital Management Company, LP reported the largest position.
- Are funds buying or selling ALMS?
- In Q2 2026, 26 managers opened new ALMS positions, 74 added, 61 trimmed and 25 sold out. Managers that filed in both quarters added a net 3,066,124 shares.
- How current is this ALMS institutional ownership data?
- It covers holdings as of the end of Q2 2026. Managers have 45 days after the quarter ends to file Form 13F (by August 14, 2026 for Q2 2026), so positions may have changed since.
From the SEC's Form 13F data sets for Q2 2026: every 13F holdings report, matched to ALMS by CUSIP. Options are left out. ALMS news and filings · ALMS insider trades · Top funds