Alumis Ownership | Who Owns Alumis?
Alumis Ownership Summary
Alumis is owned by 25.96% institutional investors, 0.62% insiders, and 73.43% retail investors. Ayurmaya capital management company, lp is the largest institutional shareholder, holding 14.54% of ALMS shares. Vanguard Morn Total Stk Mkt Idx Investor is the top mutual fund, with 2.46% of its assets in Alumis shares.
ALMS Ownership Benchmark
| Type | Name | % Inst | % Insiders | % Retail |
|---|---|---|---|---|
| Stock | Alumis | 25.96% | 0.62% | 73.43% |
| Sector | Healthcare Stocks | 35.56% | 12.08% | 52.36% |
| Industry | Biotech Stocks | 35.43% | 12.01% | 52.56% |
Institutional Shareholders
Top Institutional Shareholders by Total Shares
| Holder | Shares | % Holding | Value |
|---|---|---|---|
| Ayurmaya capital management company, lp | 15.14M | 14.54% | $147.76M |
| Blackrock funding, inc. /de | 7.17M | 6.85% | $157.97M |
| Deep track capital, lp | 6.77M | 6.47% | $149.20M |
| Samsara biocapital | 6.35M | 6.06% | $139.79M |
| Foresite capital management v | 5.90M | 5.63% | $129.91M |
| Venbio partners | 4.53M | 4.32% | $99.76M |
| Foresite capital management vi | 4.25M | 4.06% | $93.58M |
| Vanguard group | 4.10M | 3.94% | $40.05M |
| Cormorant asset management, lp | 3.95M | 3.77% | $87.00M |
| Nextech invest | 3.54M | 3.38% | $78.01M |
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 | 5.90M | 47.94% | $129.91M |
| Venbio partners | 4.53M | 35.56% | $99.76M |
| Foresite capital management vi | 4.25M | 20.33% | $93.58M |
| Tybourne capital management (hk) | 1.40M | 18.05% | $5.58M |
| Samsara biocapital | 6.35M | 13.58% | $139.79M |
| Saturn v capital management | 3.20M | 12.77% | $70.54M |
| Octagon capital advisors lp | 2.83M | 6.90% | $62.36M |
| Trium capital llp | 390.27K | 6.76% | $10.98M |
| Nextech invest | 3.54M | 5.49% | $78.01M |
Top Buyers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Deep track capital, lp | 6.77M | 2.44% | 6.77M |
| Price t rowe associates inc /md/ | 3.29M | 0.01% | 3.24M |
| Ubs group | 3.05M | 0.01% | 2.94M |
| Blackrock funding, inc. /de | 7.17M | 0.00% | 2.60M |
| Janus henderson group | 2.10M | 0.02% | 2.10M |
Top Sellers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| 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 |
| Cantor fitzgerald, l. p. | - | - | -559.20K |
New Positions
| Holder | Shares | % Assets | Change | Value |
|---|---|---|---|---|
| Deep track capital, lp | 6.77M | 2.44% | 6.77M | $149.20M |
| Janus henderson group | 2.10M | 0.02% | 2.10M | $46.15M |
| Ikarian capital | 1.21M | 2.17% | 1.21M | $26.73M |
| Weiss asset management lp | 1.10M | 0.41% | 1.10M | $24.18M |
| Great point partners | 856.06K | 4.33% | 856.06K | $18.86M |
Sold Out
| Holder | Change |
|---|---|
| Principal securities | -36.00 |
| Glenmede investment management, lp | -78.00 |
| Rise advisors | -103.00 |
| Quadrant capital group | -113.00 |
| Raymond james financial | -215.00 |
Institutional Ownership Trends
| Date | Holdings | Change % | Shares | Change % | Ownership | Change % | Increased Position | Change % | Decreased Position | Change % |
|---|---|---|---|---|---|---|---|---|---|---|
| Mar 31, 2026 | 109 | -22.70% | 27,179,654 | -65.63% | 25 | 0.45% | 84 | 6.33% | 15 | -55.88% |
| 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% |
Top Mutual Funds Shareholders
| Holder | Shares | % Holding | Change |
|---|---|---|---|
| Vanguard Morn Total Stk Mkt Idx Investor | 3.14M | 2.46% | 130.94K |
| Vanguard Total Stock Mkt Idx Inv | 3.14M | 2.46% | 130.94K |
| iShares Russell 2000 ETF | 2.06M | 1.62% | 22.32K |
| HBM Healthcare Investments AG Ord | 1.58M | 1.24% | - |
| US Small-Cap Growth II Equity Comp | 1.37M | 1.07% | 702.70K |
| T. Rowe Price New Horizons | 1.37M | 1.07% | 470.50K |
| T. Rowe Price Integrated US Sm Gr Eq | 1.09M | 0.85% | 721.10K |
| T. Rowe Price Integrated US SmCapGrEq | 1.09M | 0.85% | 759.20K |
| Vanguard Institutional Extnd Mkt Idx Tr | 976.84K | 0.77% | 59.15K |
| iShares Russell 2000 Growth ETF | 726.26K | 0.57% | - |
Recent Insider Transactions
| Date | Name | Role | Activity | Value |
|---|---|---|---|---|
| Aug 03, 2026 | Schroer John R. | Chief Financial Officer | Sell | $86.55K |
| Aug 03, 2026 | Pangali Sanam | Chief Legal Officer | Sell | $35.97K |
| Aug 03, 2026 | Hardiman Roy C. | Chief Business & Strategy Ofcr | Sell | $70.99K |
| Aug 03, 2026 | Goldstein David M | Chief Scientific Officer | Sell | $68.46K |
| Aug 03, 2026 | Drappa Jorn | Chief Medical Officer | Sell | $64.53K |
Insider Transactions Trends
| Date | Buy | Sell |
|---|---|---|
| 2026 Q3 | - | 7 |
| 2026 Q2 | - | - |
| 2026 Q1 | 7 | - |
| 2025 Q4 | 29 | - |
| 2025 Q3 | - | - |
ALMS Ownership FAQ
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