Altimmune Ownership | Who Owns Altimmune?
Altimmune Ownership Summary
Altimmune is owned by 45.94% institutional investors, 0.78% insiders, and 53.28% retail investors. Blackrock funding, inc. /de is the largest institutional shareholder, holding 7.82% 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 | 45.94% | 0.78% | 53.28% |
| Sector | Healthcare Stocks | 488.30% | 11.08% | -399.38% |
| Industry | Biotech Stocks | 307.10% | 11.11% | -218.21% |
Institutional Shareholders
Top Institutional Shareholders by Total Shares
| Holder | Shares | % Holding | Value |
|---|---|---|---|
| Blackrock funding, inc. /de | 6.37M | 7.82% | $24.66M |
| Ameriprise financial | 5.25M | 7.39% | $37.89M |
| Vanguard group | 4.43M | 6.23% | $31.95M |
| State street | 3.47M | 4.88% | $25.02M |
| Tang capital management | 2.75M | 3.38% | $10.64M |
| Geode capital management | 1.66M | 2.33% | $11.96M |
| Millennium management | 1.11M | 1.47% | $5.56M |
| Knoll capital management | 1.12M | 1.38% | $4.34M |
| Caption management | 980.78K | 1.20% | $3.80M |
| Ubs group | 719.55K | 1.01% | $5.19M |
Top Institutional Shareholders by % of Total Assets
| Holder | Shares | % Assets | Value |
|---|---|---|---|
| Knoll capital management | 1.12M | 3.09% | $4.34M |
| Gerber | 206.78K | 0.56% | $800.23K |
| Tang capital management | 2.75M | 0.54% | $10.64M |
| Beirne wealth consulting services | 342.46K | 0.43% | $1.33M |
| Brown wealth management | 231.08K | 0.28% | $894.29K |
| Scientech research | 254.31K | 0.24% | $984.19K |
| Kraematon investment advisors | 30.79K | 0.22% | $221.96K |
| Avidity partners management lp | 105.00K | 0.08% | $406.35K |
| Summit financial wealth advisors | 96.29K | 0.06% | $372.63K |
| Wealth effects | 31.75K | 0.05% | $122.87K |
Top Buyers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Ameriprise financial | 5.25M | 0.01% | 1.38M |
| Caption management | 980.78K | 0.04% | 941.92K |
| Millennium management | 1.11M | 0.00% | 765.66K |
| Ubs group | 719.55K | 0.00% | 437.10K |
| Scientech research | 254.31K | 0.24% | 254.31K |
Top Sellers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Marshall wace, llp | 22.10K | 0.00% | -1.15M |
| Bellevue group | - | - | -1.06M |
| Schroder investment management group | - | - | -961.88K |
| Capital fund management | - | - | -726.83K |
| Vanguard group | 4.43M | 0.00% | -552.25K |
New Positions
| Holder | Shares | % Assets | Change | Value |
|---|---|---|---|---|
| Scientech research | 254.31K | 0.24% | 254.31K | $984.19K |
| Avidity partners management lp | 105.00K | 0.08% | 105.00K | $406.35K |
| Susquehanna portfolio strategies | 84.33K | 0.01% | 84.33K | $326.35K |
| Verition fund management | 31.15K | 0.00% | 31.15K | $120.57K |
| Kraematon investment advisors | 30.79K | 0.22% | 30.79K | $221.96K |
Sold Out
| Holder | Change |
|---|---|
| Capital performance advisors llp | -11.00 |
| Tradewinds capital management | -20.00 |
| Quantbot technologies lp | -60.00 |
| Stephens consulting | -65.00 |
| Corecap advisors | -71.00 |
Institutional Ownership Trends
| Date | Holdings | Change % | Shares | Change % | Ownership | Change % | Increased Position | Change % | Decreased Position | Change % |
|---|---|---|---|---|---|---|---|---|---|---|
| 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% |
| Sep 30, 2024 | 180 | -4.26% | 39,499,260 | -6.80% | 55 | 1.56% | 83 | -17.82% | 43 | -6.52% |
| Jun 30, 2024 | 188 | 2.73% | 42,381,900 | -4.54% | 59 | 1.04% | 101 | -4.72% | 46 | 12.20% |
Top Mutual Funds Shareholders
| Holder | Shares | % Holding | Change |
|---|---|---|---|
| Vanguard US Total Market Shares ETF | 2.58M | 3.36% | - |
| Vanguard Total Stock Mkt Idx Inv | 2.73M | 3.20% | -60.39K |
| iShares Russell 2000 ETF | 1.85M | 2.10% | - |
| SPDR® S&P Biotech ETF | 1.24M | 1.41% | 2.77K |
| CT (Lux) American Smaller Com 9U USD | 830.56K | 1.08% | -2.54M |
| Vanguard Institutional Extnd Mkt Idx Tr | 882.28K | 1.04% | -406.50K |
| Fidelity Small Cap Index | 775.64K | 0.88% | 59.16K |
| Bellevue Healthcare Ord | 600.00K | 0.84% | 600.00K |
| iShares Russell 2000 Growth ETF | 673.20K | 0.76% | - |
| Federated Hermes MDT Small Cap Core IS | 591.29K | 0.73% | 518.67K |
Recent Insider Transactions
| Date | Name | Role | Activity | Value |
|---|---|---|---|---|
| Mar 17, 2025 | Sohn Catherine A. | - | Buy | $5.78K |
| Mar 13, 2025 | WEAVER GREGORY L | Chief Financial Officer | Buy | $52.00K |
| Aug 19, 2024 | Drutz David | - | Sell | $56.31K |
| Aug 19, 2024 | Drutz David | - | Sell | $54.24K |
| Aug 15, 2023 | Drutz David | - | Buy | $862.50 |
Insider Transactions Trends
| Date | Buy | Sell |
|---|---|---|
| 2025 Q4 | - | - |
| 2025 Q3 | - | - |
| 2025 Q1 | 2 | - |
| 2024 Q4 | - | - |
| 2024 Q3 | - | 2 |
ALT Ownership FAQ
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