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, Q3 2025
Institutional positions in Altimmune, Inc. as of Sep 30, 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
- 159
- −18 vs. Q2 2025
- Shares held
- 41.5M
- +3.91M (+10.4%) vs. Q2 2025
- Total value
- $156.4M
- +$11.0M (+7.6%) vs. Q2 2025
- New holders
- 23
- 57 more added
- Sold out
- 41
- 48 more reduced
3 institutions that held it in Q2 2025 haven't filed for Q3 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q2 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, Q3 2025
Shares, value and share of portfolio for each institution holding Altimmune, Inc.; share changes are against Q2 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Voya Investment Management LLC | 13,690 | $51.6K | 0.00% | −7,148−34.3% | Reduced |
| Cambridge Investment Research Advisors, Inc. | 12,532 | $47.0K | 0.00% | −6,136−32.9% | Reduced |
| Sequoia Financial Advisors, LLC | 12,074 | $45.5K | 0.00% | +12,074 | New |
| Two Sigma Securities, LLC | 11,250 | $42.4K | 0.01% | −6,861−37.9% | Reduced |
| Sunbelt Securities, Inc. | 10,844 | $40.9K | 0.00% | 00.0% | Unchanged |
| DCF Advisers, LLC | 10,770 | $40.6K | 0.02% | 00.0% | Unchanged |
| Victory Capital Management Inc | 10,061 | $37.9K | 0.00% | +10,061 | New |
| Geneos Wealth Management Inc. | 10,000 | $37.7K | 0.00% | 00.0% | Unchanged |
| Citigroup Inc | 9,774 | $36.8K | 0.00% | −58,407−85.7% | Reduced |
| Tower Research Capital LLC (TRC) | 9,421 | $35.5K | 0.00% | −5,535−37.0% | Reduced |
| Advisory Services Network, LLC | 8,960 | $33.8K | 0.00% | −7,127−44.3% | Reduced |
| Legal & General Group Plc | 8,620 | $32.5K | 0.00% | 00.0% | Unchanged |
| Point72 (DIFC) Ltd | 8,143 | $30.7K | 0.00% | +8,143 | New |
| North Star Investment Management Corp. | 8,000 | $30.2K | 0.00% | −9,000−52.9% | Reduced |
| Jones Financial Companies LLLP | 6,626 | $26.5K | 0.00% | 00.0% | Unchanged |
| Ameritas Investment Partners, Inc. | 6,955 | $26.2K | 0.00% | 00.0% | Unchanged |
| SBI Securities Co., Ltd. | 6,909 | $26.0K | 0.00% | −209−2.9% | Reduced |
| Point72 Europe (London) LLP | 5,484 | $20.7K | 0.00% | +5,484 | New |
| Larson Financial Group LLC | 5,305 | $20.0K | 0.00% | +5+0.1% | Added |
| Quarry LP | 5,019 | $18.9K | 0.00% | +1,019+25.5% | Added |
| HighTower Advisors, LLC | 4,909 | $18.5K | 0.00% | +2,456+100.1% | Added |
| California State Teachers Retirement System | 4,844 | $18.3K | 0.00% | −302−5.9% | Reduced |
| FNY Investment Advisers, LLC | 5,000 | $18.0K | 0.01% | +5,000 | New |
| SRS Capital Advisors, Inc. | 4,089 | $15.4K | 0.00% | +2,447+149.0% | Added |
| TD Waterhouse Canada Inc. | 3,500 | $13.6K | 0.00% | 00.0% | Unchanged |
| Mirae Asset Global Investments Co., Ltd. | 3,412 | $12.9K | 0.00% | +279+8.9% | Added |
| GWM Advisors LLC | 3,188 | $12.0K | 0.00% | −300−8.6% | Reduced |
| The PNC Financial Services Group, Inc. | 2,881 | $10.9K | 0.00% | +1,192+70.6% | Added |
| Amalgamated Bank | 2,451 | $9.00K | 0.00% | 00.0% | Unchanged |
| CWM, LLC | 2,264 | $9.00K | 0.00% | +373+19.7% | Added |
| Activest Wealth Management | 2,001 | $7.54K | 0.00% | 00.0% | Unchanged |
| GF Fund Management Co. Ltd. | 1,899 | $7.16K | 0.00% | +78+4.3% | Added |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 1,125 | $4.24K | 0.00% | −487−30.2% | Reduced |
| Groupe la Francaise | 1,200 | $3.87K | 0.00% | +1,200 | New |
| Country Trust Bank | 1,000 | $3.77K | 0.00% | 00.0% | Unchanged |
| NBC Securities, Inc. | 1,000 | $3.77K | 0.00% | 00.0% | Unchanged |
| Global Retirement Partners, LLC | 1,000 | $3.77K | 0.00% | +1,000 | New |
| Hollencrest Capital Management | 770 | $2.90K | 0.00% | 00.0% | Unchanged |
| Bessemer Group Inc | 660 | $2.00K | 0.00% | −43−6.1% | Reduced |
| Stone House Investment Management, LLC | 500 | $1.89K | 0.00% | 00.0% | Unchanged |
| Massmutual Trust Co FSB | 418 | $1.58K | 0.00% | +418 | New |
| ZRC Wealth Management, LLC | 286 | $1.08K | 0.00% | 00.0% | Unchanged |
| Daiwa Securities Group Inc. | 235 | $1.00K | 0.00% | 00.0% | Unchanged |
| Fifth Third Bancorp | 250 | $943 | 0.00% | 00.0% | Unchanged |
| IFP Advisors, Inc | 200 | $754 | 0.00% | 00.0% | Unchanged |
| Ameritas Advisory Services, LLC | 200 | $754 | 0.00% | 00.0% | Unchanged |
| Sterling Capital Management LLC | 197 | $743 | 0.00% | +10+5.3% | Added |
| MAI Capital Management | 150 | $566 | 0.00% | +150 | New |
| Northwestern Mutual Wealth Management Co | 101 | $381 | 0.00% | −67−39.9% | Reduced |
| Nisa Investment Advisors, LLC | 95 | $358 | 0.00% | −281−74.7% | Reduced |
| Federated Hermes, Inc. | 75 | $283 | 0.00% | −915,383−100.0% | Reduced |
| Farther Finance Advisors, LLC | 73 | $275 | 0.00% | +54+284.2% | Added |
| Rockefeller Capital Management L.P. | 54 | $204 | 0.00% | +54 | New |
| US Bancorp | 51 | $192 | 0.00% | −3,820−98.7% | Reduced |
| Parallel Advisors, LLC | 40 | $151 | 0.00% | 00.0% | Unchanged |
| Bernard Wealth Management Corp. | 15 | $57 | 0.00% | 00.0% | Unchanged |
| First Horizon Corp | 3 | $11 | 0.00% | +3 | New |
| Huntington National Bank | 2 | $8 | 0.00% | 00.0% | Unchanged |
| Cornerstone Planning Group LLC | 2,562 | – | – | +2,561+256,100.0% | Added |
| Scientech Research LLC | 0 | $0 | 0.00% | −254,312−100.0% | Sold out |
| Caitong International Asset Management Co., Ltd | 0 | $0 | 0.00% | −239,630−100.0% | Sold out |
| Gerber, LLC | 0 | $0 | 0.00% | −206,778−100.0% | Sold out |
| Exchange Traded Concepts, LLC | 0 | $0 | 0.00% | −175,707−100.0% | Sold out |
| Moody Aldrich Partners LLC | 0 | $0 | 0.00% | −157,614−100.0% | Sold out |
| Woodline Partners LP | 0 | $0 | 0.00% | −142,863−100.0% | Sold out |
| Avidity Partners Management LP | 0 | $0 | 0.00% | −105,000−100.0% | Sold out |
| Centiva Capital, LP | 0 | $0 | 0.00% | −92,319−100.0% | Sold out |
| Envestnet Asset Management Inc | 0 | $0 | 0.00% | −32,908−100.0% | Sold out |
| Wealth Enhancement Advisory Services, LLC | 0 | $0 | 0.00% | −24,828−100.0% | Sold out |
| Resources Investment Advisors, LLC. | 0 | $0 | 0.00% | −24,147−100.0% | Sold out |
| Marshall Wace, LLP | 0 | $0 | 0.00% | −22,100−100.0% | Sold out |
| Baader Bank INC | 0 | $0 | 0.00% | −34,292−100.0% | Sold out |
| Glenmede Investment Management, LP | 0 | $0 | 0.00% | −20,465−100.0% | Sold out |
| Vivaldi Capital Management, LLC | 0 | $0 | 0.00% | −20,000−100.0% | Sold out |
| Headlands Technologies LLC | 0 | $0 | 0.00% | −18,557−100.0% | Sold out |
| SEI Investments Co | 0 | $0 | 0.00% | −18,421−100.0% | Sold out |
| Horizon Wealth Management, LLC | 0 | $0 | 0.00% | −15,000−100.0% | Sold out |
| State Board of Administration of Florida Retirement System | 0 | $0 | 0.00% | −14,344−100.0% | Sold out |
| Bayesian Capital Management, LP | 0 | $0 | 0.00% | −14,300−100.0% | Sold out |
| Los Angeles Capital Management LLC | 0 | $0 | 0.00% | −13,947−100.0% | Sold out |
| Mercer Global Advisors Inc | 0 | $0 | 0.00% | −12,868−100.0% | Sold out |
| PFG Investments, LLC | 0 | $0 | 0.00% | −12,000−100.0% | Sold out |
| 180 Wealth Advisors, LLC | 0 | $0 | 0.00% | −11,300−100.0% | Sold out |
| Prudential Financial Inc | 0 | $0 | 0.00% | −11,195−100.0% | Sold out |
| Dark Forest Capital Management LP | 0 | $0 | 0.00% | −10,165−100.0% | Sold out |
| UBS Asset Management Americas Inc | 0 | $0 | 0.00% | −4,215−100.0% | Sold out |
| PEAK6 LLC | 0 | $0 | 0.00% | −3,423−100.0% | Sold out |
| Accordant Advisory Group Inc | 0 | $0 | 0.00% | −1,000−100.0% | Sold out |
| Winnow Wealth LLC | 0 | $0 | 0.00% | −1,000−100.0% | Sold out |
| Skopos Labs, Inc. | 0 | $0 | 0.00% | −572−100.0% | Sold out |
| GAMMA Investing LLC | 0 | $0 | 0.00% | −327−100.0% | Sold out |
| Signaturefd, LLC | 0 | $0 | 0.00% | −318−100.0% | Sold out |
| Versant Capital Management, Inc | 0 | $0 | 0.00% | −230−100.0% | Sold out |
| Rothschild Investment LLC | 0 | $0 | 0.00% | −195−100.0% | Sold out |
| Allworth Financial LP | 0 | $0 | 0.00% | −190−100.0% | Sold out |
| Parkside Financial Bank & Trust | 0 | $0 | 0.00% | −105−100.0% | Sold out |
| CoreCap Advisors, LLC | 0 | $0 | 0.00% | −71−100.0% | Sold out |
| Principal Securities, Inc. | 0 | $0 | 0.00% | −35−100.0% | Sold out |
| Tradewinds Capital Management, LLC | 0 | $0 | 0.00% | −20−100.0% | Sold out |
| Twin Peaks Wealth Advisors, LLC | 0 | $0 | 0.00% | −13−100.0% | Sold out |