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, Q2 2025
Institutional positions in Altimmune, Inc. as of Jun 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
- 180
- +4 vs. Q1 2025
- Shares held
- 37.6M
- −579.0K (−1.5%) vs. Q1 2025
- Total value
- $145.5M
- −$45.7M (−23.9%) vs. Q1 2025
- New holders
- 38
- 72 more added
- Sold out
- 34
- 39 more reduced
1 institution that held it in Q1 2025 haven't filed for Q2 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q1 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, Q2 2025
Shares, value and share of portfolio for each institution holding Altimmune, Inc.; share changes are against Q1 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| BlackRock, Inc. | 6,372,560 | $24.7M | 0.00% | +237,330+3.9% | Added |
| Vanguard Group Inc | 5,167,124 | $20.0M | 0.00% | +759,662+17.2% | Added |
| State Street Corp | 2,753,638 | $10.7M | 0.00% | −637,933−18.8% | Reduced |
| Tang Capital Management LLC | 2,750,000 | $10.6M | 0.54% | 00.0% | Unchanged |
| Geode Capital Management, LLC | 1,934,880 | $7.49M | 0.00% | +228,995+13.4% | Added |
| Susquehanna International Group, LLP | 1,619,747 | $6.27M | 0.01% | +543,683+50.5% | Added |
| Knoll Capital Management, LLC | 1,121,524 | $4.34M | 3.09% | 00.0% | Unchanged |
| Caption Management, LLC | 980,781 | $3.80M | 0.35% | +941,917+2,423.6% | Added |
| Federated Hermes, Inc. | 915,458 | $3.54M | 0.01% | +727,731+387.7% | Added |
| UBS Group AG | 886,918 | $3.43M | 0.00% | +98,753+12.5% | Added |
| Morgan Stanley | 835,407 | $3.23M | 0.00% | +178,160+27.1% | Added |
| Bank of America Corp | 716,019 | $2.77M | 0.00% | +435,467+155.2% | Added |
| Northern Trust Corp | 640,346 | $2.48M | 0.00% | +3,640+0.6% | Added |
| Citadel Advisors LLC | 523,461 | $2.03M | 0.00% | +523,461 | New |
| Goldman Sachs Group Inc | 499,238 | $1.93M | 0.00% | +108,903+27.9% | Added |
| Group One Trading, L.P. | 469,389 | $1.82M | 0.06% | +212,779+82.9% | Added |
| Dimensional Fund Advisors LP | 447,470 | $1.73M | 0.00% | −44,999−9.1% | Reduced |
| Two Sigma Investments, LP | 437,286 | $1.69M | 0.00% | −710,530−61.9% | Reduced |
| FMR LLC | 401,843 | $1.56M | 0.00% | +381,040+1,831.7% | Added |
| Beirne Wealth Consulting Services, LLC | 342,458 | $1.33M | 0.43% | +48,000+16.3% | Added |
| Bank of New York Mellon Corp | 332,016 | $1.28M | 0.00% | +143,016+75.7% | Added |
| Barclays PLC | 292,095 | $1.13M | 0.00% | +104,633+55.8% | Added |
| Virtu Financial LLC | 267,778 | $1.04M | 0.05% | +267,778 | New |
| Scientech Research LLC | 254,312 | $984.2K | 0.24% | +254,312 | New |
| Wellington Management Group LLP | 251,866 | $974.7K | 0.00% | +26,912+12.0% | Added |
| Caitong International Asset Management Co., Ltd | 239,630 | $927.4K | 0.66% | +238,693+25,474.2% | Added |
| Charles Schwab Investment Management Inc | 233,506 | $903.7K | 0.00% | +21,627+10.2% | Added |
| Brown Wealth Management, LLC | 231,083 | $894.3K | 0.28% | +131,059+131.0% | Added |
| Steward Partners Investment Advisory, LLC | 213,384 | $825.8K | 0.01% | +64,175+43.0% | Added |
| Gerber, LLC | 206,778 | $800.2K | 0.56% | −75,000−26.6% | Reduced |
| Nuveen, LLC | 202,355 | $783.1K | 0.00% | −61,543−23.3% | Reduced |
| Hennion & Walsh Asset Management, Inc. | 188,955 | $731.3K | 0.03% | −8,729−4.4% | Reduced |
| IMC-Chicago, LLC | 186,818 | $723.0K | 0.02% | +103,507+124.2% | Added |
| Exchange Traded Concepts, LLC | 175,707 | $680.0K | 0.01% | +22,101+14.4% | Added |
| Moody Aldrich Partners LLC | 157,614 | $610.0K | 0.12% | +157,614 | New |
| Sculptor Capital LP | 151,000 | $584.4K | 0.01% | +63,000+71.6% | Added |
| Intech Investment Management LLC | 144,890 | $560.7K | 0.01% | +73,482+102.9% | Added |
| Woodline Partners LP | 142,863 | $552.9K | 0.00% | +142,863 | New |
| Brevan Howard Capital Management LP | 133,209 | $515.5K | 0.01% | +89,405+204.1% | Added |
| Two Sigma Advisers, LP | 129,200 | $500.0K | 0.00% | −135,100−51.1% | Reduced |
| Summit Financial Wealth Advisors, LLC | 122,988 | $476.0K | 0.09% | +5,000+4.2% | Added |
| Gsa Capital Partners LLP | 121,364 | $470.0K | 0.03% | +90,586+294.3% | Added |
| Rhumbline Advisers | 113,981 | $441.1K | 0.00% | +7,462+7.0% | Added |
| Ameriprise Financial Inc | 113,875 | $440.7K | 0.00% | −1,330,057−92.1% | Reduced |
| Invesco Ltd. | 106,863 | $413.6K | 0.00% | +25,735+31.7% | Added |
| Avidity Partners Management LP | 105,000 | $406.4K | 0.08% | +105,000 | New |
| JPMorgan Chase & Co | 104,697 | $405.2K | 0.00% | −5,814−5.3% | Reduced |
| Silvercrest Asset Management Group LLC | 103,500 | $400.5K | 0.00% | 00.0% | Unchanged |
| Rafferty Asset Management, LLC | 102,011 | $394.8K | 0.00% | −41,661−29.0% | Reduced |
| Macquarie Group Ltd | 100,000 | $387.0K | 0.00% | 00.0% | Unchanged |
| Simplex Trading, LLC | 99,967 | $386.0K | 0.01% | +79,146+380.1% | Added |
| Commonwealth Equity Services, LLC | 98,921 | $383.0K | 0.00% | +9,245+10.3% | Added |
| Wells Fargo & Company | 98,378 | $380.7K | 0.00% | +6,697+7.3% | Added |
| Centiva Capital, LP | 92,319 | $357.3K | 0.02% | +92,319 | New |
| HSBC Holdings PLC | 85,468 | $328.6K | 0.00% | +13,210+18.3% | Added |
| Susquehanna Portfolio Strategies, LLC | 84,329 | $326.4K | 0.01% | +84,329 | New |
| Millennium Management LLC | 78,294 | $303.0K | 0.00% | −1,033,005−93.0% | Reduced |
| LPL Financial LLC | 75,493 | $292.2K | 0.00% | +8,912+13.4% | Added |
| Alliancebernstein L.P. | 71,760 | $277.7K | 0.00% | 00.0% | Unchanged |
| Deutsche Bank AG | 70,771 | $273.9K | 0.00% | −9,080−11.4% | Reduced |
| Citigroup Inc | 68,181 | $263.9K | 0.00% | −95,337−58.3% | Reduced |
| Royal Bank of Canada | 60,963 | $236.0K | 0.00% | +8,496+16.2% | Added |
| Baird Financial Group, Inc. | 59,440 | $230.0K | 0.00% | 00.0% | Unchanged |
| D. E. Shaw & Co., Inc. | 51,258 | $198.4K | 0.00% | +742+1.5% | Added |
| Mirae Asset Global ETFs Holdings Ltd. | 47,348 | $181.4K | 0.00% | −1,553−3.2% | Reduced |
| MetLife Investment Management | 46,870 | $181.4K | 0.00% | 00.0% | Unchanged |
| Stifel Financial Corp | 41,560 | $160.8K | 0.00% | +5,060+13.9% | Added |
| Axq Capital, LP | 41,282 | $159.8K | 0.05% | +41,282 | New |
| Wolverine Trading, LLC | 45,528 | $159.3K | 0.00% | +45,528 | New |
| Creative Planning | 41,164 | $159.3K | 0.00% | +9,558+30.2% | Added |
| MML Investors Services, LLC | 39,318 | $152.0K | 0.00% | −39,295−50.0% | Reduced |
| ExodusPoint Capital Management, LP | 39,259 | $152.0K | 0.00% | −1,668−4.1% | Reduced |
| Jefferies Financial Group Inc. | 35,000 | $135.4K | 0.00% | +10,000+40.0% | Added |
| Price T Rowe Associates Inc | 34,231 | $133.0K | 0.00% | +2,753+8.7% | Added |
| Kraematon Investment Advisors, Inc | 33,585 | $130.0K | 0.12% | −1,500−4.3% | Reduced |
| Envestnet Asset Management Inc | 32,908 | $127.4K | 0.00% | +10,671+48.0% | Added |
| Wealth Effects LLC | 31,750 | $122.9K | 0.05% | +900+2.9% | Added |
| Verition Fund Management LLC | 31,154 | $120.6K | 0.00% | +31,154 | New |
| Wealth Enhancement Advisory Services, LLC | 24,828 | $118.2K | 0.00% | +10,264+70.5% | Added |
| Manufacturers Life Insurance Company, The | 27,945 | $108.1K | 0.00% | +2,748+10.9% | Added |
| Farallon Capital Management, L.L.C. | 27,600 | $106.8K | 0.00% | 00.0% | Unchanged |
| Raymond James Financial Inc | 25,969 | $100.5K | 0.00% | +11,309+77.1% | Added |
| Concurrent Investment Advisors, LLC | 25,258 | $97.7K | 0.00% | +3,565+16.4% | Added |
| Resources Investment Advisors, LLC. | 24,147 | $93.4K | 0.00% | +2,557+11.8% | Added |
| DLD Asset Management, LP | 22,600 | $87.5K | 0.01% | +22,600 | New |
| Marshall Wace, LLP | 22,100 | $85.5K | 0.00% | −1,146,238−98.1% | Reduced |
| Profund Advisors LLC | 21,713 | $84.0K | 0.00% | −8,046−27.0% | Reduced |
| New York State Common Retirement Fund | 21,447 | $83.0K | 0.00% | 00.0% | Unchanged |
| Baader Bank INC | 34,292 | $82.0K | 0.01% | +34,292 | New |
| Voya Investment Management LLC | 20,838 | $80.6K | 0.00% | +1,871+9.9% | Added |
| Glenmede Investment Management, LP | 20,465 | $79.2K | 0.00% | +20,465 | New |
| Sunbelt Securities, Inc. | 10,844 | $78.2K | 0.01% | 00.0% | Unchanged |
| Vivaldi Capital Management, LLC | 20,000 | $77.4K | 0.01% | 00.0% | Unchanged |
| Quest Partners LLC | 19,820 | $76.7K | 0.01% | 00.0% | Unchanged |
| ProShare Advisors LLC | 18,898 | $73.1K | 0.00% | +50+0.3% | Added |
| Cambridge Investment Research Advisors, Inc. | 18,668 | $72.0K | 0.00% | +3,000+19.1% | Added |
| Headlands Technologies LLC | 18,557 | $71.8K | 0.01% | +18,557 | New |
| SEI Investments Co | 18,421 | $71.3K | 0.00% | +18,421 | New |
| National Asset Management, Inc. | 18,288 | $70.8K | 0.00% | −6,012−24.7% | Reduced |
| Cetera Investment Advisers | 18,150 | $70.2K | 0.00% | −4,652−20.4% | Reduced |