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, Q1 2025
Institutional positions in Altimmune, Inc. as of Mar 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
- 177
- −3 vs. Q4 2024
- Shares held
- 38.2M
- −2.13M (−5.3%) vs. Q4 2024
- Total value
- $191.2M
- −$99.4M (−34.2%) vs. Q4 2024
- New holders
- 26
- 53 more added
- Sold out
- 29
- 54 more reduced
3 institutions that held it in Q4 2024 haven't filed for Q1 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 2024: 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, Q1 2025
Shares, value and share of portfolio for each institution holding Altimmune, Inc.; share changes are against Q4 2024.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Gsa Capital Partners LLP | 30,778 | $154.0K | 0.01% | −52,179−62.9% | Reduced |
| Wealth Effects LLC | 30,850 | $154.3K | 0.06% | −2,000−6.1% | Reduced |
| Price T Rowe Associates Inc | 31,478 | $158.0K | 0.00% | +3,332+11.8% | Added |
| Creative Planning | 31,606 | $158.0K | 0.00% | −5,392−14.6% | Reduced |
| Janus Henderson Group PLC | 32,000 | $170.1K | 0.00% | 00.0% | Unchanged |
| Corebridge Financial, Inc. | 34,796 | $174.0K | 0.00% | −516−1.5% | Reduced |
| Kraematon Investment Advisors, Inc | 35,085 | $175.4K | 0.18% | +4,300+14.0% | Added |
| Stifel Financial Corp | 36,500 | $182.5K | 0.00% | +23,397+178.6% | Added |
| Fox Run Management, L.L.C. | 38,200 | $191.0K | 0.03% | +25,295+196.0% | Added |
| Caption Management, LLC | 38,864 | $194.3K | 0.01% | +38,864 | New |
| ExodusPoint Capital Management, LP | 40,927 | $205.0K | 0.00% | +40,927 | New |
| Brevan Howard Capital Management LP | 43,804 | $219.0K | 0.01% | +29,773+212.2% | Added |
| MetLife Investment Management | 46,870 | $234.3K | 0.00% | +2,396+5.4% | Added |
| State of Wisconsin Investment Board | 48,087 | $240.4K | 0.00% | −520−1.1% | Reduced |
| Mirae Asset Global ETFs Holdings Ltd. | 48,901 | $246.6K | 0.00% | +2,241+4.8% | Added |
| D. E. Shaw & Co., Inc. | 50,516 | $252.6K | 0.00% | −409,317−89.0% | Reduced |
| Royal Bank of Canada | 52,467 | $262.0K | 0.00% | −4,061−7.2% | Reduced |
| Balyasny Asset Management LLC | 54,953 | $274.8K | 0.00% | −141,374−72.0% | Reduced |
| Baird Financial Group, Inc. | 59,440 | $297.2K | 0.00% | 00.0% | Unchanged |
| California State Teachers Retirement System | 66,422 | $332.1K | 0.00% | 00.0% | Unchanged |
| LPL Financial LLC | 66,581 | $332.9K | 0.00% | +8,408+14.5% | Added |
| Legal & General Group Plc | 68,102 | $340.3K | 0.00% | 00.0% | Unchanged |
| HSBC Holdings PLC | 72,258 | $348.6K | 0.00% | +72,258 | New |
| Intech Investment Management LLC | 71,408 | $357.0K | 0.00% | +25,285+54.8% | Added |
| Alliancebernstein L.P. | 71,760 | $358.8K | 0.00% | 00.0% | Unchanged |
| MML Investors Services, LLC | 78,613 | $393.0K | 0.00% | −30,762−28.1% | Reduced |
| Deutsche Bank AG | 79,851 | $399.3K | 0.00% | +3,026+3.9% | Added |
| Invesco Ltd. | 81,128 | $405.6K | 0.00% | −165,958−67.2% | Reduced |
| IMC-Chicago, LLC | 83,311 | $416.6K | 0.02% | −220,221−72.6% | Reduced |
| Sculptor Capital LP | 88,000 | $440.0K | 0.01% | +88,000 | New |
| Commonwealth Equity Services, LLC | 89,676 | $448.0K | 0.00% | +3,582+4.2% | Added |
| Wells Fargo & Company | 91,681 | $458.4K | 0.00% | −123,857−57.5% | Reduced |
| Macquarie Group Ltd | 100,000 | $500.0K | 0.00% | 00.0% | Unchanged |
| Brown Wealth Management, LLC | 100,024 | $500.1K | 0.17% | +50,024+100.0% | Added |
| Silvercrest Asset Management Group LLC | 103,500 | $517.5K | 0.00% | 00.0% | Unchanged |
| Rhumbline Advisers | 106,519 | $532.6K | 0.00% | +1,643+1.6% | Added |
| UBS Asset Management Americas Inc | 106,872 | $534.4K | 0.00% | +14,480+15.7% | Added |
| JPMorgan Chase & Co | 110,511 | $552.6K | 0.00% | +7,571+7.4% | Added |
| Summit Financial Wealth Advisors, LLC | 117,988 | $589.9K | 0.12% | +18,500+18.6% | Added |
| Squarepoint Ops LLC | 133,885 | $669.4K | 0.00% | +119,179+810.4% | Added |
| Swiss National Bank | 139,500 | $697.5K | 0.00% | 00.0% | Unchanged |
| Rafferty Asset Management, LLC | 143,672 | $718.4K | 0.00% | −14,078−8.9% | Reduced |
| Steward Partners Investment Advisory, LLC | 149,209 | $746.0K | 0.01% | +121,159+431.9% | Added |
| Jane Street Group, LLC | 152,642 | $763.2K | 0.00% | −126,008−45.2% | Reduced |
| Exchange Traded Concepts, LLC | 153,606 | $768.0K | 0.01% | −5,967−3.7% | Reduced |
| Citigroup Inc | 163,518 | $817.6K | 0.00% | +38,828+31.1% | Added |
| Barclays PLC | 187,462 | $937.3K | 0.00% | +29,934+19.0% | Added |
| Federated Hermes, Inc. | 187,727 | $938.6K | 0.00% | +187,727 | New |
| Bank of New York Mellon Corp | 189,000 | $945.0K | 0.00% | +2,162+1.2% | Added |
| Hennion & Walsh Asset Management, Inc. | 197,684 | $988.4K | 0.04% | −7,906−3.8% | Reduced |
| Charles Schwab Investment Management Inc | 211,879 | $1.06M | 0.00% | 00.0% | Unchanged |
| Wellington Management Group LLP | 224,954 | $1.12M | 0.00% | +19,721+9.6% | Added |
| Group One Trading, L.P. | 256,610 | $1.28M | 0.05% | −21,925−7.9% | Reduced |
| Nuveen, LLC | 263,898 | $1.30M | 0.00% | +263,898 | New |
| Two Sigma Advisers, LP | 264,300 | $1.32M | 0.00% | +198,600+302.3% | Added |
| Bank of America Corp | 280,552 | $1.40M | 0.00% | +98,663+54.2% | Added |
| Gerber, LLC | 281,778 | $1.41M | 1.17% | 00.0% | Unchanged |
| Beirne Wealth Consulting Services, LLC | 294,458 | $1.47M | 0.52% | 00.0% | Unchanged |
| RFG Advisory, LLC | 324,397 | $1.62M | 0.04% | +324,397 | New |
| Goldman Sachs Group Inc | 390,335 | $1.95M | 0.00% | −135,835−25.8% | Reduced |
| Dimensional Fund Advisors LP | 492,469 | $2.46M | 0.00% | −140,972−22.3% | Reduced |
| Northern Trust Corp | 636,706 | $3.18M | 0.00% | −29,210−4.4% | Reduced |
| Morgan Stanley | 657,247 | $3.29M | 0.00% | −264,575−28.7% | Reduced |
| UBS Group AG | 788,165 | $3.94M | 0.00% | +68,610+9.5% | Added |
| Schroder Investment Management Group | 961,884 | $5.12M | 0.01% | +533,563+124.6% | Added |
| Bellevue Group AG | 1,056,793 | $5.28M | 0.12% | +111,347+11.8% | Added |
| Susquehanna International Group, LLP | 1,076,064 | $5.38M | 0.01% | +575,145+114.8% | Added |
| Millennium Management LLC | 1,111,299 | $5.56M | 0.01% | +765,662+221.5% | Added |
| Knoll Capital Management, LLC | 1,121,524 | $5.61M | 3.65% | 00.0% | Unchanged |
| Two Sigma Investments, LP | 1,147,816 | $5.74M | 0.01% | +542,513+89.6% | Added |
| Marshall Wace, LLP | 1,168,338 | $5.84M | 0.01% | +1,102,821+1,683.3% | Added |
| Ameriprise Financial Inc | 1,443,932 | $7.22M | 0.00% | −3,810,966−72.5% | Reduced |
| Geode Capital Management, LLC | 1,705,885 | $8.53M | 0.00% | +47,379+2.9% | Added |
| Tang Capital Management LLC | 2,750,000 | $13.8M | 0.76% | 00.0% | Unchanged |
| State Street Corp | 3,391,571 | $17.0M | 0.00% | −78,446−2.3% | Reduced |
| Vanguard Group Inc | 4,407,462 | $22.0M | 0.00% | −24,150−0.5% | Reduced |
| BlackRock, Inc. | 6,135,230 | $30.7M | 0.00% | −24,075−0.4% | Reduced |
| Proequities, Inc. | 0 | $0 | 0.00% | −100−100.0% | Sold out |
| Citadel Advisors LLC | 0 | $0 | 0.00% | −675,044−100.0% | Sold out |
| Ensign Peak Advisors, Inc | 0 | $0 | 0.00% | −454,981−100.0% | Sold out |
| Colony Group, LLC | 0 | $0 | 0.00% | −122,539−100.0% | Sold out |
| Virtu Financial LLC | 0 | $0 | 0.00% | −86,831−100.0% | Sold out |
| Skandinaviska Enskilda Banken AB (publ) | 0 | $0 | 0.00% | −62,002−100.0% | Sold out |
| PEAK6 LLC | 0 | $0 | 0.00% | −61,948−100.0% | Sold out |
| Los Angeles Capital Management LLC | 0 | $0 | 0.00% | −31,197−100.0% | Sold out |
| UBS Oconnor LLC | 0 | $0 | 0.00% | −26,899−100.0% | Sold out |
| Farringdon Capital, Ltd. | 0 | $0 | 0.00% | −25,295−100.0% | Sold out |
| Walleye Capital LLC | 0 | $0 | 0.00% | −22,224−100.0% | Sold out |
| Integrated Wealth Concepts LLC | 0 | $0 | 0.00% | −19,019−100.0% | Sold out |
| Walleye Trading LLC | 0 | $0 | 0.00% | −18,975−100.0% | Sold out |
| Centiva Capital, LP | 0 | $0 | 0.00% | −17,180−100.0% | Sold out |
| Wolverine Trading, LLC | 0 | $0 | 0.00% | −15,543−100.0% | Sold out |
| Kestra Advisory Services, LLC | 0 | $0 | 0.00% | −15,682−100.0% | Sold out |
| Bayesian Capital Management, LP | 0 | $0 | 0.00% | −14,700−100.0% | Sold out |
| Freestone Grove Partners LP | 0 | $0 | 0.00% | −14,418−100.0% | Sold out |
| Engineers Gate Manager LP | 0 | $0 | 0.00% | −14,414−100.0% | Sold out |
| Headlands Technologies LLC | 0 | $0 | 0.00% | −14,054−100.0% | Sold out |
| AQR Capital Management LLC | 0 | $0 | 0.00% | −12,577−100.0% | Sold out |
| Axq Capital, LP | 0 | $0 | 0.00% | −12,388−100.0% | Sold out |
| WealthPLAN Partners, LLC | 0 | $0 | 0.00% | −10,204−100.0% | Sold out |