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 |
|---|---|---|---|---|---|
| ProShare Advisors LLC | 20,816 | $75.1K | 0.00% | +3,735+21.9% | Added |
| Quest Partners LLC | 19,820 | $71.5K | 0.00% | 00.0% | Unchanged |
| Advisor Group Holdings, Inc. | 18,941 | $68.4K | 0.00% | +1,193+6.7% | Added |
| Man Group plc | 18,936 | $68.4K | 0.00% | +18,936 | New |
| DCF Advisers, LLC | 18,700 | $67.5K | 0.02% | +7,930+73.6% | Added |
| Keudell/Morrison Wealth Management | 18,500 | $66.8K | 0.01% | +18,500 | New |
| Vines Capital Management, LLC | 17,884 | $64.6K | 0.06% | +17,884 | New |
| EverSource Wealth Advisors, LLC | 17,683 | $63.8K | 0.00% | +1,650+10.3% | Added |
| Miracle Mile Advisors, LLC | 17,020 | $61.4K | 0.00% | 00.0% | Unchanged |
| China Universal Asset Management Co., Ltd. | 17,003 | $61.4K | 0.00% | +1,533+9.9% | Added |
| EFG International AG | 16,500 | $59.6K | 0.00% | +16,500 | New |
| Advisory Services Network, LLC | 15,160 | $54.7K | 0.00% | +6,200+69.2% | Added |
| PKS Advisory Services, LLC | 15,100 | $54.5K | 0.01% | +15,100 | New |
| Wiley Bros.-Aintree Capital, LLC | 15,035 | $54.3K | 0.00% | +15,035 | New |
| Vontobel Holding Ltd. | 15,000 | $54.1K | 0.00% | +15,000 | New |
| Russell Investments Group, Ltd. | 14,537 | $52.5K | 0.00% | +608+4.4% | Added |
| Martingale Asset Management L P | 14,355 | $51.8K | 0.00% | +14,355 | New |
| TCG Advisory Services, LLC | 14,218 | $51.3K | 0.00% | +14,218 | New |
| Sherbrooke Park Advisers LLC | 14,152 | $51.1K | 0.13% | −1,752−11.0% | Reduced |
| National Asset Management, Inc. | 13,955 | $50.4K | 0.00% | −6,525−31.9% | Reduced |
| Voya Investment Management LLC | 13,690 | $49.4K | 0.00% | 00.0% | Unchanged |
| Northeast Financial Group, Inc. | 13,393 | $48.3K | 0.01% | +13,393 | New |
| Schonfeld Strategic Advisors LLC | 13,021 | $47.0K | 0.00% | +13,021 | New |
| Gotham Asset Management, LLC | 12,669 | $45.7K | 0.00% | +12,669 | New |
| Jones Financial Companies LLLP | 12,526 | $45.2K | 0.00% | +5,900+89.0% | Added |
| Sequoia Financial Advisors, LLC | 12,428 | $44.9K | 0.00% | +354+2.9% | Added |
| Two Sigma Securities, LLC | 12,274 | $44.3K | 0.01% | +1,024+9.1% | Added |
| Victory Capital Management Inc | 11,930 | $43.1K | 0.00% | +1,869+18.6% | Added |
| ExodusPoint Capital Management, LP | 11,921 | $43.0K | 0.00% | −166,256−93.3% | Reduced |
| Sunbelt Securities, Inc. | 10,844 | $39.1K | 0.00% | 00.0% | Unchanged |
| SG Americas Securities, LLC | 10,575 | $38.0K | 0.00% | −7,465−41.4% | Reduced |
| Change Path, LLC | 10,500 | $37.9K | 0.00% | +10,500 | New |
| Quadrature Capital Ltd | 10,101 | $36.5K | 0.00% | +10,101 | New |
| Geneos Wealth Management Inc. | 10,000 | $36.1K | 0.00% | 00.0% | Unchanged |
| Legal & General Group Plc | 9,362 | $33.8K | 0.00% | +742+8.6% | Added |
| SBI Securities Co., Ltd. | 8,837 | $31.9K | 0.00% | +1,928+27.9% | Added |
| Tower Research Capital LLC (TRC) | 8,189 | $29.6K | 0.00% | −1,232−13.1% | Reduced |
| SRS Capital Advisors, Inc. | 8,165 | $29.5K | 0.00% | +4,076+99.7% | Added |
| North Star Investment Management Corp. | 8,000 | $28.9K | 0.00% | 00.0% | Unchanged |
| Ameritas Investment Partners, Inc. | 6,955 | $25.1K | 0.00% | 00.0% | Unchanged |
| California State Teachers Retirement System | 5,461 | $19.7K | 0.00% | +617+12.7% | Added |
| Larson Financial Group LLC | 5,306 | $19.2K | 0.00% | +10.0% | Added |
| Mirae Asset Global Investments Co., Ltd. | 5,070 | $18.3K | 0.00% | +1,658+48.6% | Added |
| Activest Wealth Management | 5,001 | $18.1K | 0.00% | +3,000+149.9% | Added |
| TD Waterhouse Canada Inc. | 3,500 | $12.6K | 0.00% | 00.0% | Unchanged |
| CWM, LLC | 3,082 | $11.0K | 0.00% | +818+36.1% | Added |
| Amalgamated Bank | 2,786 | $10.0K | 0.00% | +335+13.7% | Added |
| The PNC Financial Services Group, Inc. | 2,412 | $8.71K | 0.00% | −469−16.3% | Reduced |
| GF Fund Management Co. Ltd. | 2,049 | $7.40K | 0.00% | +150+7.9% | Added |
| HighMark Wealth Management LLC | 2,000 | $7.22K | 0.00% | +2,000 | New |
| Caitong International Asset Management Co., Ltd | 1,924 | $6.95K | 0.00% | +1,924 | New |
| GWM Advisors LLC | 1,888 | $6.82K | 0.00% | −1,300−40.8% | Reduced |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 1,125 | $4.06K | 0.00% | 00.0% | Unchanged |
| 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 |
| Massmutual Trust Co FSB | 918 | $3.31K | 0.00% | +500+119.6% | Added |
| UBS Asset Management Americas Inc | 672 | $2.43K | 0.00% | +672 | New |
| US Bancorp | 559 | $2.02K | 0.00% | +508+996.1% | Added |
| Sterling Capital Management LLC | 530 | $1.91K | 0.00% | +333+169.0% | Added |
| Stone House Investment Management, LLC | 500 | $1.80K | 0.00% | 00.0% | Unchanged |
| Signaturefd, LLC | 490 | $1.77K | 0.00% | +490 | New |
| ZRC Wealth Management, LLC | 286 | $1.03K | 0.00% | 00.0% | Unchanged |
| Daiwa Securities Group Inc. | 235 | $1.00K | 0.00% | 00.0% | Unchanged |
| Fifth Third Bancorp | 250 | $903 | 0.00% | 00.0% | Unchanged |
| Legacy Wealth Managment, LLC | 250 | $903 | 0.00% | +250 | New |
| TD Private Client Wealth LLC | 193 | $697 | 0.00% | +193 | New |
| MAI Capital Management | 150 | $542 | 0.00% | 00.0% | Unchanged |
| LRI Investments, LLC | 123 | $444 | 0.00% | +123 | New |
| Northwestern Mutual Wealth Management Co | 100 | $361 | 0.00% | −1−1.0% | Reduced |
| Nisa Investment Advisors, LLC | 95 | $343 | 0.00% | 00.0% | Unchanged |
| Allworth Financial LP | 89 | $322 | 0.00% | +89 | New |
| Farther Finance Advisors, LLC | 73 | $264 | 0.00% | 00.0% | Unchanged |
| Parallel Advisors, LLC | 40 | $144 | 0.00% | 00.0% | Unchanged |
| Clearstead Advisors, LLC | 40 | $143 | 0.00% | +40 | New |
| Comerica Bank | 28 | $101 | 0.00% | +28 | New |
| Bernard Wealth Management Corp. | 15 | $55 | 0.00% | 00.0% | Unchanged |
| First Horizon Corp | 3 | $11 | 0.00% | 00.0% | Unchanged |
| Huntington National Bank | 2 | $7 | 0.00% | 00.0% | Unchanged |
| Cornerstone Planning Group LLC | 1 | $5 | 0.00% | −2,561−100.0% | Reduced |
| Rothschild Investment LLC | 1 | $4 | 0.00% | +1 | New |
| Commonwealth Retirement Investments LLC | 1 | $4 | 0.00% | +1 | New |
| Motiv8 Investments LLC | 67 | $0 | 0.00% | +67 | New |
| Bessemer Group Inc | 0 | $0 | 0.00% | −660−100.0% | Sold out |
| Point72 Asset Management, L.P. | 0 | $0 | 0.00% | −476,926−100.0% | Sold out |
| Simplex Trading, LLC | 0 | $0 | 0.00% | −213,709−100.0% | Sold out |
| Gsa Capital Partners LLP | 0 | $0 | 0.00% | −116,770−100.0% | Sold out |
| Macquarie Group Ltd | 0 | $0 | 0.00% | −100,000−100.0% | Sold out |
| DLD Asset Management, LP | 0 | $0 | 0.00% | −50,000−100.0% | Sold out |
| Sig Brokerage, LP | 0 | $0 | 0.00% | −34,502−100.0% | Sold out |
| Kraematon Investment Advisors, Inc | 0 | $0 | 0.00% | −17,435−100.0% | Sold out |
| Fortis Capital Management LLC | 0 | $0 | 0.00% | −16,606−100.0% | Sold out |
| Walleye Trading LLC | 0 | $0 | 0.00% | −14,759−100.0% | Sold out |
| Cambridge Investment Research Advisors, Inc. | 0 | $0 | 0.00% | −12,532−100.0% | Sold out |
| Quarry LP | 0 | $0 | 0.00% | −5,019−100.0% | Sold out |
| HighTower Advisors, LLC | 0 | $0 | 0.00% | −4,909−100.0% | Sold out |
| FNY Investment Advisers, LLC | 0 | $0 | 0.00% | −5,000−100.0% | Sold out |
| Groupe la Francaise | 0 | $0 | 0.00% | −1,200−100.0% | Sold out |
| NBC Securities, Inc. | 0 | $0 | 0.00% | −1,000−100.0% | Sold out |
| Global Retirement Partners, LLC | 0 | $0 | 0.00% | −1,000−100.0% | Sold out |