Altimmune Ownership | Who Owns Altimmune?
Altimmune Ownership Summary
Altimmune is owned by 12.78% institutional investors, 0.71% insiders, and 86.50% retail investors. Blackrock funding, inc. /de is the largest institutional shareholder, holding 10.85% of ALT shares. Vanguard US Total Market Shares ETF is the top mutual fund, with 3.36% of its assets in Altimmune shares.
ALT Ownership Benchmark
| Type | Name | % Inst | % Insiders | % Retail |
|---|---|---|---|---|
| Stock | Altimmune | 12.78% | 0.71% | 86.50% |
| Sector | Healthcare Stocks | 232.86% | 10.65% | -143.51% |
| Industry | Biotech Stocks | 382.13% | 10.41% | -292.54% |
Institutional Shareholders
Top Institutional Shareholders by Total Shares
| Holder | Shares | % Holding | Value |
|---|---|---|---|
| Blackrock funding, inc. /de | 9.70M | 10.85% | $35.03M |
| Vanguard group | 9.49M | 10.61% | $34.26M |
| State street | 3.60M | 4.42% | $13.58M |
| Nuveen | 2.33M | 2.65% | $7.19M |
| Tang capital management | 2.13M | 2.62% | $8.04M |
| Geode capital management | 2.29M | 2.56% | $8.28M |
| Two sigma investments, lp | 2.00M | 2.45% | $7.53M |
| Jane street group | 1.78M | 2.00% | $6.44M |
| Two sigma advisers, lp | 1.43M | 1.75% | $5.39M |
| Morgan stanley | 1.36M | 1.52% | $4.91M |
Top Institutional Shareholders by % of Total Assets
| Holder | Shares | % Assets | Value |
|---|---|---|---|
| Knoll capital management | 1.12M | 2.27% | $4.23M |
| Beirne wealth consulting services | 411.86K | 0.36% | $1.27M |
| Tang capital management | 2.13M | 0.31% | $8.04M |
| Brown wealth management | 236.14K | 0.19% | $727.30K |
| Wealth effects | 131.95K | 0.14% | $406.41K |
| Caitong asset management | 12.32K | 0.12% | $44.48K |
| Summit financial wealth advisors | 103.29K | 0.05% | $372.87K |
| Sherbrooke park advisers | 15.90K | 0.03% | $59.96K |
| Hennion & walsh asset management | 214.63K | 0.03% | $774.82K |
| Axq capital, lp | 25.70K | 0.02% | $92.78K |
Top Buyers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Blackrock funding, inc. /de | 9.70M | 0.00% | 3.33M |
| Vanguard group | 9.49M | 0.00% | 3.12M |
| Two sigma investments, lp | 2.00M | 0.01% | 1.56M |
| Jane street group | 1.78M | 0.00% | 1.50M |
| Two sigma advisers, lp | 1.43M | 0.01% | 1.30M |
Top Sellers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Bellevue group | - | - | -1.06M |
| Schroder investment management group | - | - | -961.88K |
| Caption management | 130.00K | 0.00% | -850.78K |
| Capital fund management | - | - | -726.83K |
| Tang capital management | 2.13M | 0.31% | -618.69K |
New Positions
| Holder | Shares | % Assets | Change | Value |
|---|---|---|---|---|
| Vanguard fiduciary trust | 869.32K | 0.00% | 869.32K | $2.68M |
| Point72 asset management | 476.93K | 0.00% | 476.93K | $1.80M |
| Jump financial | 115.80K | 0.01% | 115.80K | $436.57K |
| Bridgeway capital management | 50.60K | 0.00% | 50.60K | $190.76K |
| Vanguard global advisers | 42.83K | 0.00% | 42.83K | $131.90K |
Sold Out
| Holder | Change |
|---|---|
| Cornerstone planning group | -1.00 |
| Capital performance advisors llp | -11.00 |
| Twin peaks wealth advisors | -13.00 |
| Tradewinds capital management | -20.00 |
| Principal securities | -35.00 |
Institutional Ownership Trends
| Date | Holdings | Change % | Shares | Change % | Ownership | Change % | Increased Position | Change % | Decreased Position | Change % |
|---|---|---|---|---|---|---|---|---|---|---|
| Dec 31, 2025 | 50 | -72.38% | 11,431,385 | -72.45% | 12 | 0.49% | 32 | -63.22% | 4 | -91.67% |
| Sep 30, 2025 | 62 | -69.46% | 8,979,026 | -74.79% | 11 | 0.58% | 26 | -77.39% | 19 | -50.00% |
| Jun 30, 2025 | 207 | 7.81% | 37,429,392 | -1.85% | 45 | 1.80% | 115 | 40.24% | 39 | -29.09% |
| Mar 31, 2025 | 7 | -96.55% | 2,264,429 | -94.40% | 2 | 0.09% | 2 | -98.15% | 2 | -95.12% |
| Dec 31, 2024 | 197 | 8.84% | 39,287,627 | -0.54% | 55 | 1.79% | 104 | 25.30% | 41 | -4.65% |
Top Mutual Funds Shareholders
| Holder | Shares | % Holding | Change |
|---|---|---|---|
| Vanguard US Total Market Shares ETF | 2.58M | 3.36% | - |
| Vanguard Total Stock Mkt Idx Inv | 4.11M | 3.16% | 829.20K |
| State Street® SPDR® S&P® Biotech ETF | 4.72M | 2.43% | -47.90K |
| iShares Russell 2000 ETF | 3.02M | 1.55% | 25.47K |
| SPDR® S&P Biotech ETF | 1.24M | 1.41% | 2.77K |
| Vanguard Institutional Extnd Mkt Idx Tr | 1.42M | 1.09% | 270.70K |
| CT (Lux) American Smaller Com 9U USD | 830.56K | 1.08% | -2.54M |
| Nuveen Quant Small Cap Equity R6 | 1.89M | 0.97% | 449.40K |
| Vanguard Strategic Equity Inv | 1.83M | 0.94% | 262.72K |
| Bellevue Healthcare Ord | 600.00K | 0.84% | 600.00K |
Recent Insider Transactions
| Date | Name | Role | Activity | Value |
|---|---|---|---|---|
| Apr 06, 2026 | GILL JOHN | - | Buy | $31.35K |
| Apr 01, 2026 | WEAVER GREGORY L | Chief Financial Officer | Buy | $31.50K |
| Apr 01, 2026 | Durso Jerome Benedict | President and CEO | Buy | $47.10K |
| Mar 06, 2026 | WEAVER GREGORY L | Chief Financial Officer | Buy | $17.70K |
| Mar 06, 2026 | Durso Jerome Benedict | President and CEO | Buy | $70.79K |
Insider Transactions Trends
| Date | Buy | Sell |
|---|---|---|
| 2026 Q2 | 3 | - |
| 2026 Q1 | 4 | - |
| 2025 Q4 | 3 | - |
| 2025 Q3 | - | - |
| 2025 Q1 | 2 | - |
ALT Ownership FAQ
Try Tickergate Pro Free
Customize Everything. 100% Flexibility. Fast and Easy to Use (No code or Excel Needed)
Customize your own personal stocks lists, views and charts
Choose from hundreds of fields, up to 15 years of history
Conduct deep comparison analysis
Discover trending investment themes
Find your next best investment
Research stocks using tools