Altimmune, Inc.
ALT- Exchange
- Nasdaq
- Industry
- Pharmaceutical Preparations
- SEC CIK
- 0001326190
In the last 90 days, Altimmune, Inc. insiders filed 1 open-market purchase and 0 sales; 210 institutions reported holding it in 13F filings for Q2 2026, worth $456.1M in total; Viking Global Investors is the only superinvestor holding it.
13F holders, Q4 2025
Institutional positions in Altimmune, Inc. as of Dec 31, 2025. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 183
- +27 vs. Q3 2025
- Shares held
- 55.1M
- +13.6M (+32.8%) vs. Q3 2025
- Total value
- $198.8M
- +$42.6M (+27.2%) vs. Q3 2025
- New holders
- 48
- 75 more added
- Sold out
- 21
- 28 more reduced
3 institutions that held it in Q3 2025 haven't filed for Q4 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting ALT on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 210 | $456.1M |
| Q1 2026 | 173 | $213.5M |
| Q4 2025 | 183 | $198.8M |
| Q3 2025 | 159 | $156.4M |
| Q2 2025 | 180 | $145.5M |
| Q1 2025 | 177 | $191.2M |
| Q4 2024 | 183 | $292.3M |
| Q3 2024 | 169 | $243.0M |
| Q2 2024 | 173 | $282.1M |
| Q1 2024 | 171 | $452.2M |
| Q4 2023 | 143 | $377.1M |
| Q3 2023 | 113 | $79.2M |
| Q2 2023 | 120 | $124.5M |
| Q1 2023 | 133 | $205.4M |
| Q4 2022 | 128 | $769.9M |
| Q3 2022 | 122 | $588.1M |
| Q2 2022 | 111 | $466.9M |
| Q1 2022 | 103 | $207.4M |
| Q4 2021 | 102 | $295.8M |
| Q3 2021 | 119 | $375.3M |
| Q2 2021 | 109 | $269.2M |
| Q1 2021 | 98 | $336.5M |
Institutions, Q4 2025
Shares, value and share of portfolio for each institution holding Altimmune, Inc.; share changes are against Q3 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Motiv8 Investments LLC | 67 | $0 | 0.00% | +67 | New |
| Rothschild Investment LLC | 1 | $4 | 0.00% | +1 | New |
| Commonwealth Retirement Investments LLC | 1 | $4 | 0.00% | +1 | New |
| Cornerstone Planning Group LLC | 1 | $5 | 0.00% | −2,561−100.0% | Reduced |
| Huntington National Bank | 2 | $7 | 0.00% | 00.0% | Unchanged |
| First Horizon Corp | 3 | $11 | 0.00% | 00.0% | Unchanged |
| Bernard Wealth Management Corp. | 15 | $55 | 0.00% | 00.0% | Unchanged |
| Comerica Bank | 28 | $101 | 0.00% | +28 | New |
| Clearstead Advisors, LLC | 40 | $143 | 0.00% | +40 | New |
| Parallel Advisors, LLC | 40 | $144 | 0.00% | 00.0% | Unchanged |
| Farther Finance Advisors, LLC | 73 | $264 | 0.00% | 00.0% | Unchanged |
| Allworth Financial LP | 89 | $322 | 0.00% | +89 | New |
| Nisa Investment Advisors, LLC | 95 | $343 | 0.00% | 00.0% | Unchanged |
| Northwestern Mutual Wealth Management Co | 100 | $361 | 0.00% | −1−1.0% | Reduced |
| LRI Investments, LLC | 123 | $444 | 0.00% | +123 | New |
| MAI Capital Management | 150 | $542 | 0.00% | 00.0% | Unchanged |
| TD Private Client Wealth LLC | 193 | $697 | 0.00% | +193 | New |
| Fifth Third Bancorp | 250 | $903 | 0.00% | 00.0% | Unchanged |
| Legacy Wealth Managment, LLC | 250 | $903 | 0.00% | +250 | New |
| Daiwa Securities Group Inc. | 235 | $1.00K | 0.00% | 00.0% | Unchanged |
| ZRC Wealth Management, LLC | 286 | $1.03K | 0.00% | 00.0% | Unchanged |
| Signaturefd, LLC | 490 | $1.77K | 0.00% | +490 | New |
| Stone House Investment Management, LLC | 500 | $1.80K | 0.00% | 00.0% | Unchanged |
| Sterling Capital Management LLC | 530 | $1.91K | 0.00% | +333+169.0% | Added |
| US Bancorp | 559 | $2.02K | 0.00% | +508+996.1% | Added |
| UBS Asset Management Americas Inc | 672 | $2.43K | 0.00% | +672 | New |
| Massmutual Trust Co FSB | 918 | $3.31K | 0.00% | +500+119.6% | Added |
| Country Trust Bank | 1,000 | $3.61K | 0.00% | 00.0% | Unchanged |
| Trust Co of Vermont | 1,000 | $3.61K | 0.00% | +1,000 | New |
| Leonteq Securities AG | 1,000 | $3.61K | 0.00% | +1,000 | New |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 1,125 | $4.06K | 0.00% | 00.0% | Unchanged |
| GWM Advisors LLC | 1,888 | $6.82K | 0.00% | −1,300−40.8% | Reduced |
| Caitong International Asset Management Co., Ltd | 1,924 | $6.95K | 0.00% | +1,924 | New |
| HighMark Wealth Management LLC | 2,000 | $7.22K | 0.00% | +2,000 | New |
| GF Fund Management Co. Ltd. | 2,049 | $7.40K | 0.00% | +150+7.9% | Added |
| The PNC Financial Services Group, Inc. | 2,412 | $8.71K | 0.00% | −469−16.3% | Reduced |
| Amalgamated Bank | 2,786 | $10.0K | 0.00% | +335+13.7% | Added |
| CWM, LLC | 3,082 | $11.0K | 0.00% | +818+36.1% | Added |
| TD Waterhouse Canada Inc. | 3,500 | $12.6K | 0.00% | 00.0% | Unchanged |
| Activest Wealth Management | 5,001 | $18.1K | 0.00% | +3,000+149.9% | Added |
| Mirae Asset Global Investments Co., Ltd. | 5,070 | $18.3K | 0.00% | +1,658+48.6% | Added |
| Larson Financial Group LLC | 5,306 | $19.2K | 0.00% | +10.0% | Added |
| California State Teachers Retirement System | 5,461 | $19.7K | 0.00% | +617+12.7% | Added |
| Ameritas Investment Partners, Inc. | 6,955 | $25.1K | 0.00% | 00.0% | Unchanged |
| North Star Investment Management Corp. | 8,000 | $28.9K | 0.00% | 00.0% | Unchanged |
| SRS Capital Advisors, Inc. | 8,165 | $29.5K | 0.00% | +4,076+99.7% | Added |
| Tower Research Capital LLC (TRC) | 8,189 | $29.6K | 0.00% | −1,232−13.1% | Reduced |
| SBI Securities Co., Ltd. | 8,837 | $31.9K | 0.00% | +1,928+27.9% | Added |
| Legal & General Group Plc | 9,362 | $33.8K | 0.00% | +742+8.6% | Added |
| Geneos Wealth Management Inc. | 10,000 | $36.1K | 0.00% | 00.0% | Unchanged |
| Quadrature Capital Ltd | 10,101 | $36.5K | 0.00% | +10,101 | New |
| Change Path, LLC | 10,500 | $37.9K | 0.00% | +10,500 | New |
| SG Americas Securities, LLC | 10,575 | $38.0K | 0.00% | −7,465−41.4% | Reduced |
| Sunbelt Securities, Inc. | 10,844 | $39.1K | 0.00% | 00.0% | Unchanged |
| ExodusPoint Capital Management, LP | 11,921 | $43.0K | 0.00% | −166,256−93.3% | Reduced |
| Victory Capital Management Inc | 11,930 | $43.1K | 0.00% | +1,869+18.6% | Added |
| Two Sigma Securities, LLC | 12,274 | $44.3K | 0.01% | +1,024+9.1% | Added |
| Sequoia Financial Advisors, LLC | 12,428 | $44.9K | 0.00% | +354+2.9% | Added |
| Jones Financial Companies LLLP | 12,526 | $45.2K | 0.00% | +5,900+89.0% | Added |
| Gotham Asset Management, LLC | 12,669 | $45.7K | 0.00% | +12,669 | New |
| Schonfeld Strategic Advisors LLC | 13,021 | $47.0K | 0.00% | +13,021 | New |
| Northeast Financial Group, Inc. | 13,393 | $48.3K | 0.01% | +13,393 | New |
| Voya Investment Management LLC | 13,690 | $49.4K | 0.00% | 00.0% | Unchanged |
| National Asset Management, Inc. | 13,955 | $50.4K | 0.00% | −6,525−31.9% | Reduced |
| Sherbrooke Park Advisers LLC | 14,152 | $51.1K | 0.13% | −1,752−11.0% | Reduced |
| TCG Advisory Services, LLC | 14,218 | $51.3K | 0.00% | +14,218 | New |
| Martingale Asset Management L P | 14,355 | $51.8K | 0.00% | +14,355 | New |
| Russell Investments Group, Ltd. | 14,537 | $52.5K | 0.00% | +608+4.4% | Added |
| Vontobel Holding Ltd. | 15,000 | $54.1K | 0.00% | +15,000 | New |
| Wiley Bros.-Aintree Capital, LLC | 15,035 | $54.3K | 0.00% | +15,035 | New |
| PKS Advisory Services, LLC | 15,100 | $54.5K | 0.01% | +15,100 | New |
| Advisory Services Network, LLC | 15,160 | $54.7K | 0.00% | +6,200+69.2% | Added |
| EFG International AG | 16,500 | $59.6K | 0.00% | +16,500 | New |
| China Universal Asset Management Co., Ltd. | 17,003 | $61.4K | 0.00% | +1,533+9.9% | Added |
| Miracle Mile Advisors, LLC | 17,020 | $61.4K | 0.00% | 00.0% | Unchanged |
| EverSource Wealth Advisors, LLC | 17,683 | $63.8K | 0.00% | +1,650+10.3% | Added |
| Vines Capital Management, LLC | 17,884 | $64.6K | 0.06% | +17,884 | New |
| Keudell/Morrison Wealth Management | 18,500 | $66.8K | 0.01% | +18,500 | New |
| DCF Advisers, LLC | 18,700 | $67.5K | 0.02% | +7,930+73.6% | Added |
| Man Group plc | 18,936 | $68.4K | 0.00% | +18,936 | New |
| Advisor Group Holdings, Inc. | 18,941 | $68.4K | 0.00% | +1,193+6.7% | Added |
| Quest Partners LLC | 19,820 | $71.5K | 0.00% | 00.0% | Unchanged |
| ProShare Advisors LLC | 20,816 | $75.1K | 0.00% | +3,735+21.9% | Added |
| AQR Capital Management LLC | 21,147 | $76.3K | 0.00% | +21,147 | New |
| New York State Common Retirement Fund | 21,447 | $77.4K | 0.00% | 00.0% | Unchanged |
| DRW Securities, LLC | 22,469 | $81.1K | 0.01% | +22,469 | New |
| Police & Firemen's Retirement System of New Jersey | 23,573 | $85.1K | 0.00% | 00.0% | Unchanged |
| Axq Capital, LP | 25,701 | $92.8K | 0.02% | +5,266+25.8% | Added |
| Concurrent Investment Advisors, LLC | 26,508 | $95.7K | 0.00% | +2,500+10.4% | Added |
| Royal Bank of Canada | 27,414 | $99.0K | 0.00% | −39,319−58.9% | Reduced |
| Manufacturers Life Insurance Company, The | 27,596 | $99.6K | 0.00% | +1,609+6.2% | Added |
| Farallon Capital Management, L.L.C. | 27,600 | $99.6K | 0.00% | 00.0% | Unchanged |
| Citigroup Inc | 28,324 | $102.3K | 0.00% | +18,550+189.8% | Added |
| Cetera Investment Advisers | 29,687 | $107.2K | 0.00% | +9,481+46.9% | Added |
| Canada Pension Plan Investment Board | 30,000 | $108.3K | 0.00% | +30,000 | New |
| Fox Run Management, L.L.C. | 30,603 | $110.5K | 0.02% | +30,603 | New |
| Group One Trading, L.P. | 31,372 | $113.3K | 0.00% | −108,883−77.6% | Reduced |
| MML Investors Services, LLC | 34,550 | $124.7K | 0.00% | 00.0% | Unchanged |
| Squarepoint Ops LLC | 34,949 | $126.2K | 0.00% | −549,747−94.0% | Reduced |
| Kovack Advisors, Inc. | 35,215 | $127.1K | 0.01% | +35,215 | New |