Altimmune Ownership | Who Owns Altimmune?
Altimmune Ownership Summary
Altimmune is owned by 11.02% institutional investors, 0.67% insiders, and 88.31% retail investors. Vanguard group 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 | 11.02% | 0.67% | 88.31% |
| Sector | Healthcare Stocks | 42.52% | 10.81% | 46.67% |
| Industry | Biotech Stocks | 45.18% | 10.75% | 44.06% |
Institutional Shareholders
Top Institutional Shareholders by Total Shares
| Holder | Shares | % Holding | Value |
|---|---|---|---|
| Vanguard group | 6.37M | 7.82% | $24.03M |
| Blackrock funding, inc. /de | 6.37M | 7.82% | $24.03M |
| State street | 3.60M | 4.42% | $13.58M |
| Tang capital management | 2.13M | 2.62% | $8.04M |
| Geode capital management | 2.02M | 2.48% | $7.61M |
| Two sigma investments, lp | 2.00M | 2.45% | $7.53M |
| Morgan stanley | 1.49M | 1.83% | $5.62M |
| Two sigma advisers, lp | 1.43M | 1.75% | $5.39M |
| Millennium management | 1.11M | 1.47% | $5.56M |
| Knoll capital management | 1.12M | 1.38% | $4.23M |
Top Institutional Shareholders by % of Total Assets
| Holder | Shares | % Assets | Value |
|---|---|---|---|
| Knoll capital management | 1.12M | 2.27% | $4.23M |
| Beirne wealth consulting services | 410.46K | 0.37% | $1.55M |
| Tang capital management | 2.13M | 0.31% | $8.04M |
| Brown wealth management | 233.67K | 0.25% | $880.95K |
| Wealth effects | 59.85K | 0.07% | $225.63K |
| Summit financial wealth advisors | 96.29K | 0.06% | $372.63K |
| Kraematon investment advisors | 17.43K | 0.06% | $65.73K |
| Gsa capital partners llp | 116.77K | 0.04% | $440.00K |
| Axq capital, lp | 20.43K | 0.03% | $77.04K |
| Sherbrooke park advisers | 15.90K | 0.03% | $59.96K |
Top Buyers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Two sigma investments, lp | 2.00M | 0.01% | 1.56M |
| Two sigma advisers, lp | 1.43M | 0.01% | 1.30M |
| Vanguard group | 6.37M | 0.00% | 1.21M |
| State street | 3.60M | 0.00% | 847.62K |
| Millennium management | 1.11M | 0.00% | 765.66K |
Top Sellers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Bellevue group | - | - | -1.06M |
| Schroder investment management group | - | - | -961.88K |
| Federated hermes | 75.00 | - | -915.38K |
| Caption management | 130.00K | 0.00% | -850.78K |
| Capital fund management | - | - | -726.83K |
New Positions
| Holder | Shares | % Assets | Change | Value |
|---|---|---|---|---|
| Point72 asset management | 476.93K | 0.00% | 476.93K | $1.80M |
| Jump financial | 115.80K | 0.01% | 115.80K | $436.57K |
| Janney montgomery scott | 58.56K | 0.00% | 58.56K | $221.00K |
| Bridgeway capital management | 50.60K | 0.00% | 50.60K | $190.76K |
| Engineers gate manager lp | 41.04K | 0.00% | 41.04K | $154.73K |
Sold Out
| Holder | Change |
|---|---|
| Capital performance advisors llp | -11.00 |
| Twin peaks wealth advisors | -13.00 |
| Tradewinds capital management | -20.00 |
| Principal securities | -35.00 |
| Quantbot technologies lp | -60.00 |
Institutional Ownership Trends
| Date | Holdings | Change % | Shares | Change % | Ownership | Change % | Increased Position | Change % | Decreased Position | Change % |
|---|---|---|---|---|---|---|---|---|---|---|
| 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% |
| Sep 30, 2024 | 180 | -4.26% | 39,499,260 | -6.80% | 55 | 1.56% | 83 | -17.82% | 43 | -6.52% |
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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