Alumis Ownership | Who Owns Alumis?
Alumis Ownership Summary
Alumis is owned by 50.59% institutional investors, 0.68% insiders, and 48.73% retail investors. Ayurmaya capital management company, lp is the largest institutional shareholder, holding 14.54% of ALMS shares.
ALMS Ownership Benchmark
| Type | Name | % Inst | % Insiders | % Retail |
|---|---|---|---|---|
| Stock | Alumis | 50.59% | 0.68% | 48.73% |
| Sector | Healthcare Stocks | 232.64% | 10.66% | -143.30% |
| Industry | Biotech Stocks | 382.13% | 10.41% | -292.54% |
Institutional Shareholders
Top Institutional Shareholders by Total Shares
| Holder | Shares | % Holding | Value |
|---|---|---|---|
| Ayurmaya capital management company, lp | 15.14M | 14.54% | $147.76M |
| Foresite capital management v | 5.78M | 7.56% | $23.06M |
| Samsara biocapital | 4.80M | 6.28% | $19.16M |
| Venbio partners | 4.62M | 6.04% | $18.43M |
| Foresite capital management vi | 4.25M | 5.55% | $16.95M |
| Blackrock funding, inc. /de | 4.57M | 4.39% | $44.57M |
| Vanguard group | 4.10M | 3.94% | $40.05M |
| Nextech invest | 2.92M | 3.81% | $11.63M |
| Cormorant asset management, lp | 2.15M | 2.81% | $8.57M |
| Orbimed advisors | 1.93M | 2.52% | $7.69M |
Top Institutional Shareholders by % of Total Assets
| Holder | Shares | % Assets | Value |
|---|---|---|---|
| Ayurmaya capital management company, lp | 15.14M | 100.00% | $147.76M |
| Foresite capital management v | 5.78M | 21.21% | $23.06M |
| Tybourne capital management (hk) | 1.40M | 18.05% | $5.58M |
| Venbio partners | 4.62M | 10.45% | $18.43M |
| Trium capital llp | 893.11K | 6.76% | $8.72M |
| Foresite capital management vi | 4.25M | 6.55% | $16.95M |
| Yu fan | 789.62K | 4.10% | $3.15M |
| Towerview | 495.00K | 3.50% | $4.83M |
| Sr one capital management, lp | 1.96M | 2.71% | $19.13M |
| Samsara biocapital | 4.80M | 2.50% | $19.16M |
Top Buyers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Woodline partners lp | 1.75M | 0.03% | 1.56M |
| Blackrock funding, inc. /de | 4.57M | 0.00% | 373.43K |
| Balyasny asset management | 351.14K | 0.00% | 351.14K |
| Exome asset management | 292.77K | 0.71% | 292.77K |
| Morgan stanley | 506.53K | 0.00% | 174.12K |
Top Sellers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Trium capital llp | 893.11K | 6.76% | -2.23M |
| Madison avenue partners, lp | 417.78K | 0.10% | -1.42M |
| Bml capital management | - | - | -1.21M |
| Velan capital investment management lp | - | - | -946.68K |
| Tang capital management | 1.17M | 0.18% | -829.79K |
New Positions
| Holder | Shares | % Assets | Change | Value |
|---|---|---|---|---|
| Balyasny asset management | 351.14K | 0.00% | 351.14K | $1.05M |
| Exome asset management | 292.77K | 0.71% | 292.77K | $1.17M |
| Wellington management group llp | 165.50K | 0.00% | 165.50K | $660.36K |
| Susquehanna portfolio strategies | 158.76K | 0.01% | 158.76K | $633.44K |
| Quantinno capital management lp | 87.61K | 0.00% | 87.61K | $349.56K |
Sold Out
| Holder | Change |
|---|---|
| Salem investment counselors | -20.00 |
| Principal securities | -36.00 |
| Glenmede investment management, lp | -78.00 |
| Rise advisors | -103.00 |
| Fortitude family office | -104.00 |
Institutional Ownership Trends
| Date | Holdings | Change % | Shares | Change % | Ownership | Change % | Increased Position | Change % | Decreased Position | Change % |
|---|---|---|---|---|---|---|---|---|---|---|
| Dec 31, 2025 | 92 | -32.35% | 52,672,091 | -32.47% | 50 | 0.90% | 50 | -28.57% | 21 | -32.26% |
| Sep 30, 2025 | 39 | -66.09% | 11,785,940 | -84.82% | 15 | 0.15% | 22 | -77.55% | 6 | 200.00% |
| Jun 30, 2025 | 121 | 68.06% | 78,309,349 | 94.78% | 102 | 1.87% | 102 | 104.00% | 2 | -50.00% |
| Mar 31, 2025 | 71 | 14.52% | 40,200,845 | 0.23% | 74 | 1.33% | 49 | 25.64% | 4 | -33.33% |
| Dec 31, 2024 | 63 | 23.53% | 40,259,042 | 15.07% | 74 | 1.77% | 40 | - | 6 | 50.00% |
Recent Insider Transactions
| Date | Name | Role | Activity | Value |
|---|---|---|---|---|
| Jan 09, 2026 | AKKARAJU SRINIVAS | - | Buy | $10.00M |
| Jan 08, 2026 | Foresite Labs, LLC | - | Buy | $2.00M |
| Jan 08, 2026 | Foresite Labs, LLC | - | Buy | $5.00M |
| Jan 08, 2026 | Foresite Capital Management VI LLC | - | Buy | $2.00M |
| Jan 08, 2026 | Foresite Capital Management VI LLC | - | Buy | $5.00M |
Insider Transactions Trends
| Date | Buy | Sell |
|---|---|---|
| 2026 Q1 | 7 | - |
| 2025 Q4 | 29 | - |
| 2025 Q3 | - | - |
| 2025 Q2 | 12 | - |
ALMS Ownership FAQ
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