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 |
|---|---|---|---|---|---|
| Manufacturers Life Insurance Company, The | 27,945 | $108.1K | 0.00% | +2,748+10.9% | Added |
| Wealth Enhancement Advisory Services, LLC | 24,828 | $118.2K | 0.00% | +10,264+70.5% | Added |
| Verition Fund Management LLC | 31,154 | $120.6K | 0.00% | +31,154 | New |
| Wealth Effects LLC | 31,750 | $122.9K | 0.05% | +900+2.9% | Added |
| Envestnet Asset Management Inc | 32,908 | $127.4K | 0.00% | +10,671+48.0% | Added |
| Kraematon Investment Advisors, Inc | 33,585 | $130.0K | 0.12% | −1,500−4.3% | Reduced |
| Price T Rowe Associates Inc | 34,231 | $133.0K | 0.00% | +2,753+8.7% | Added |
| Jefferies Financial Group Inc. | 35,000 | $135.4K | 0.00% | +10,000+40.0% | 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 |
| Creative Planning | 41,164 | $159.3K | 0.00% | +9,558+30.2% | Added |
| Wolverine Trading, LLC | 45,528 | $159.3K | 0.00% | +45,528 | New |
| Axq Capital, LP | 41,282 | $159.8K | 0.05% | +41,282 | New |
| Stifel Financial Corp | 41,560 | $160.8K | 0.00% | +5,060+13.9% | Added |
| MetLife Investment Management | 46,870 | $181.4K | 0.00% | 00.0% | Unchanged |
| Mirae Asset Global ETFs Holdings Ltd. | 47,348 | $181.4K | 0.00% | −1,553−3.2% | Reduced |
| D. E. Shaw & Co., Inc. | 51,258 | $198.4K | 0.00% | +742+1.5% | Added |
| Baird Financial Group, Inc. | 59,440 | $230.0K | 0.00% | 00.0% | Unchanged |
| Royal Bank of Canada | 60,963 | $236.0K | 0.00% | +8,496+16.2% | Added |
| Citigroup Inc | 68,181 | $263.9K | 0.00% | −95,337−58.3% | Reduced |
| Deutsche Bank AG | 70,771 | $273.9K | 0.00% | −9,080−11.4% | Reduced |
| Alliancebernstein L.P. | 71,760 | $277.7K | 0.00% | 00.0% | Unchanged |
| LPL Financial LLC | 75,493 | $292.2K | 0.00% | +8,912+13.4% | Added |
| Millennium Management LLC | 78,294 | $303.0K | 0.00% | −1,033,005−93.0% | Reduced |
| Susquehanna Portfolio Strategies, LLC | 84,329 | $326.4K | 0.01% | +84,329 | New |
| HSBC Holdings PLC | 85,468 | $328.6K | 0.00% | +13,210+18.3% | Added |
| Centiva Capital, LP | 92,319 | $357.3K | 0.02% | +92,319 | New |
| Wells Fargo & Company | 98,378 | $380.7K | 0.00% | +6,697+7.3% | Added |
| Commonwealth Equity Services, LLC | 98,921 | $383.0K | 0.00% | +9,245+10.3% | Added |
| Simplex Trading, LLC | 99,967 | $386.0K | 0.01% | +79,146+380.1% | Added |
| Macquarie Group Ltd | 100,000 | $387.0K | 0.00% | 00.0% | Unchanged |
| Rafferty Asset Management, LLC | 102,011 | $394.8K | 0.00% | −41,661−29.0% | Reduced |
| Silvercrest Asset Management Group LLC | 103,500 | $400.5K | 0.00% | 00.0% | Unchanged |
| JPMorgan Chase & Co | 104,697 | $405.2K | 0.00% | −5,814−5.3% | Reduced |
| Avidity Partners Management LP | 105,000 | $406.4K | 0.08% | +105,000 | New |
| Invesco Ltd. | 106,863 | $413.6K | 0.00% | +25,735+31.7% | Added |
| Ameriprise Financial Inc | 113,875 | $440.7K | 0.00% | −1,330,057−92.1% | Reduced |
| Rhumbline Advisers | 113,981 | $441.1K | 0.00% | +7,462+7.0% | Added |
| Gsa Capital Partners LLP | 121,364 | $470.0K | 0.03% | +90,586+294.3% | Added |
| Summit Financial Wealth Advisors, LLC | 122,988 | $476.0K | 0.09% | +5,000+4.2% | Added |
| Two Sigma Advisers, LP | 129,200 | $500.0K | 0.00% | −135,100−51.1% | Reduced |
| Brevan Howard Capital Management LP | 133,209 | $515.5K | 0.01% | +89,405+204.1% | Added |
| Woodline Partners LP | 142,863 | $552.9K | 0.00% | +142,863 | New |
| Intech Investment Management LLC | 144,890 | $560.7K | 0.01% | +73,482+102.9% | Added |
| Sculptor Capital LP | 151,000 | $584.4K | 0.01% | +63,000+71.6% | Added |
| Moody Aldrich Partners LLC | 157,614 | $610.0K | 0.12% | +157,614 | New |
| Exchange Traded Concepts, LLC | 175,707 | $680.0K | 0.01% | +22,101+14.4% | Added |
| IMC-Chicago, LLC | 186,818 | $723.0K | 0.02% | +103,507+124.2% | Added |
| Hennion & Walsh Asset Management, Inc. | 188,955 | $731.3K | 0.03% | −8,729−4.4% | Reduced |
| Nuveen, LLC | 202,355 | $783.1K | 0.00% | −61,543−23.3% | Reduced |
| Gerber, LLC | 206,778 | $800.2K | 0.56% | −75,000−26.6% | Reduced |
| Steward Partners Investment Advisory, LLC | 213,384 | $825.8K | 0.01% | +64,175+43.0% | Added |
| Brown Wealth Management, LLC | 231,083 | $894.3K | 0.28% | +131,059+131.0% | Added |
| Charles Schwab Investment Management Inc | 233,506 | $903.7K | 0.00% | +21,627+10.2% | Added |
| Caitong International Asset Management Co., Ltd | 239,630 | $927.4K | 0.66% | +238,693+25,474.2% | Added |
| Wellington Management Group LLP | 251,866 | $974.7K | 0.00% | +26,912+12.0% | Added |
| Scientech Research LLC | 254,312 | $984.2K | 0.24% | +254,312 | New |
| Virtu Financial LLC | 267,778 | $1.04M | 0.05% | +267,778 | New |
| Barclays PLC | 292,095 | $1.13M | 0.00% | +104,633+55.8% | Added |
| Bank of New York Mellon Corp | 332,016 | $1.28M | 0.00% | +143,016+75.7% | Added |
| Beirne Wealth Consulting Services, LLC | 342,458 | $1.33M | 0.43% | +48,000+16.3% | Added |
| FMR LLC | 401,843 | $1.56M | 0.00% | +381,040+1,831.7% | Added |
| Two Sigma Investments, LP | 437,286 | $1.69M | 0.00% | −710,530−61.9% | Reduced |
| Dimensional Fund Advisors LP | 447,470 | $1.73M | 0.00% | −44,999−9.1% | Reduced |
| Group One Trading, L.P. | 469,389 | $1.82M | 0.06% | +212,779+82.9% | Added |
| Goldman Sachs Group Inc | 499,238 | $1.93M | 0.00% | +108,903+27.9% | Added |
| Citadel Advisors LLC | 523,461 | $2.03M | 0.00% | +523,461 | New |
| Northern Trust Corp | 640,346 | $2.48M | 0.00% | +3,640+0.6% | Added |
| Bank of America Corp | 716,019 | $2.77M | 0.00% | +435,467+155.2% | Added |
| Morgan Stanley | 835,407 | $3.23M | 0.00% | +178,160+27.1% | Added |
| UBS Group AG | 886,918 | $3.43M | 0.00% | +98,753+12.5% | Added |
| Federated Hermes, Inc. | 915,458 | $3.54M | 0.01% | +727,731+387.7% | Added |
| Caption Management, LLC | 980,781 | $3.80M | 0.35% | +941,917+2,423.6% | Added |
| Knoll Capital Management, LLC | 1,121,524 | $4.34M | 3.09% | 00.0% | Unchanged |
| Susquehanna International Group, LLP | 1,619,747 | $6.27M | 0.01% | +543,683+50.5% | Added |
| Geode Capital Management, LLC | 1,934,880 | $7.49M | 0.00% | +228,995+13.4% | Added |
| Tang Capital Management LLC | 2,750,000 | $10.6M | 0.54% | 00.0% | Unchanged |
| State Street Corp | 2,753,638 | $10.7M | 0.00% | −637,933−18.8% | Reduced |
| Vanguard Group Inc | 5,167,124 | $20.0M | 0.00% | +759,662+17.2% | Added |
| BlackRock, Inc. | 6,372,560 | $24.7M | 0.00% | +237,330+3.9% | Added |
| Bellevue Group AG | 0 | $0 | 0.00% | −1,056,793−100.0% | Sold out |
| Schroder Investment Management Group | 0 | $0 | 0.00% | −961,884−100.0% | Sold out |
| RFG Advisory, LLC | 0 | $0 | 0.00% | −324,397−100.0% | Sold out |
| Jane Street Group, LLC | 0 | $0 | 0.00% | −152,642−100.0% | Sold out |
| Swiss National Bank | 0 | $0 | 0.00% | −139,500−100.0% | Sold out |
| Squarepoint Ops LLC | 0 | $0 | 0.00% | −133,885−100.0% | Sold out |
| Balyasny Asset Management LLC | 0 | $0 | 0.00% | −54,953−100.0% | Sold out |
| State of Wisconsin Investment Board | 0 | $0 | 0.00% | −48,087−100.0% | Sold out |
| Fox Run Management, L.L.C. | 0 | $0 | 0.00% | −38,200−100.0% | Sold out |
| Corebridge Financial, Inc. | 0 | $0 | 0.00% | −34,796−100.0% | Sold out |
| Janus Henderson Group PLC | 0 | $0 | 0.00% | −32,000−100.0% | Sold out |
| Marex Group plc | 0 | $0 | 0.00% | −25,000−100.0% | Sold out |
| Arizona State Retirement System | 0 | $0 | 0.00% | −20,386−100.0% | Sold out |
| Teacher Retirement System of Texas | 0 | $0 | 0.00% | −19,144−100.0% | Sold out |
| American Century Companies Inc | 0 | $0 | 0.00% | −17,175−100.0% | Sold out |
| SG Americas Securities, LLC | 0 | $0 | 0.00% | −16,472−100.0% | Sold out |
| CIBC World Markets Corp | 0 | $0 | 0.00% | −15,760−100.0% | Sold out |
| Bridgefront Capital, LLC | 0 | $0 | 0.00% | −14,518−100.0% | Sold out |
| PVG Asset Management Corp | 0 | $0 | 0.00% | −14,025−100.0% | Sold out |
| Atria Investments LLC | 0 | $0 | 0.00% | −12,285−100.0% | Sold out |