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 |
|---|---|---|---|---|---|
| BlackRock, Inc. | 6,135,230 | $30.7M | 0.00% | −24,075−0.4% | Reduced |
| Vanguard Group Inc | 4,407,462 | $22.0M | 0.00% | −24,150−0.5% | Reduced |
| State Street Corp | 3,391,571 | $17.0M | 0.00% | −78,446−2.3% | Reduced |
| Tang Capital Management LLC | 2,750,000 | $13.8M | 0.76% | 00.0% | Unchanged |
| Geode Capital Management, LLC | 1,705,885 | $8.53M | 0.00% | +47,379+2.9% | Added |
| Ameriprise Financial Inc | 1,443,932 | $7.22M | 0.00% | −3,810,966−72.5% | Reduced |
| Marshall Wace, LLP | 1,168,338 | $5.84M | 0.01% | +1,102,821+1,683.3% | Added |
| Two Sigma Investments, LP | 1,147,816 | $5.74M | 0.01% | +542,513+89.6% | Added |
| Knoll Capital Management, LLC | 1,121,524 | $5.61M | 3.65% | 00.0% | Unchanged |
| Millennium Management LLC | 1,111,299 | $5.56M | 0.01% | +765,662+221.5% | Added |
| Susquehanna International Group, LLP | 1,076,064 | $5.38M | 0.01% | +575,145+114.8% | Added |
| Bellevue Group AG | 1,056,793 | $5.28M | 0.12% | +111,347+11.8% | Added |
| Schroder Investment Management Group | 961,884 | $5.12M | 0.01% | +533,563+124.6% | Added |
| UBS Group AG | 788,165 | $3.94M | 0.00% | +68,610+9.5% | Added |
| Morgan Stanley | 657,247 | $3.29M | 0.00% | −264,575−28.7% | Reduced |
| Northern Trust Corp | 636,706 | $3.18M | 0.00% | −29,210−4.4% | Reduced |
| Dimensional Fund Advisors LP | 492,469 | $2.46M | 0.00% | −140,972−22.3% | Reduced |
| Goldman Sachs Group Inc | 390,335 | $1.95M | 0.00% | −135,835−25.8% | Reduced |
| RFG Advisory, LLC | 324,397 | $1.62M | 0.04% | +324,397 | New |
| Beirne Wealth Consulting Services, LLC | 294,458 | $1.47M | 0.52% | 00.0% | Unchanged |
| Gerber, LLC | 281,778 | $1.41M | 1.17% | 00.0% | Unchanged |
| Bank of America Corp | 280,552 | $1.40M | 0.00% | +98,663+54.2% | Added |
| Two Sigma Advisers, LP | 264,300 | $1.32M | 0.00% | +198,600+302.3% | Added |
| Nuveen, LLC | 263,898 | $1.30M | 0.00% | +263,898 | New |
| Group One Trading, L.P. | 256,610 | $1.28M | 0.05% | −21,925−7.9% | Reduced |
| Wellington Management Group LLP | 224,954 | $1.12M | 0.00% | +19,721+9.6% | Added |
| Charles Schwab Investment Management Inc | 211,879 | $1.06M | 0.00% | 00.0% | Unchanged |
| Hennion & Walsh Asset Management, Inc. | 197,684 | $988.4K | 0.04% | −7,906−3.8% | Reduced |
| Bank of New York Mellon Corp | 189,000 | $945.0K | 0.00% | +2,162+1.2% | Added |
| Federated Hermes, Inc. | 187,727 | $938.6K | 0.00% | +187,727 | New |
| Barclays PLC | 187,462 | $937.3K | 0.00% | +29,934+19.0% | Added |
| Citigroup Inc | 163,518 | $817.6K | 0.00% | +38,828+31.1% | Added |
| Exchange Traded Concepts, LLC | 153,606 | $768.0K | 0.01% | −5,967−3.7% | Reduced |
| Jane Street Group, LLC | 152,642 | $763.2K | 0.00% | −126,008−45.2% | Reduced |
| Steward Partners Investment Advisory, LLC | 149,209 | $746.0K | 0.01% | +121,159+431.9% | Added |
| Rafferty Asset Management, LLC | 143,672 | $718.4K | 0.00% | −14,078−8.9% | Reduced |
| Swiss National Bank | 139,500 | $697.5K | 0.00% | 00.0% | Unchanged |
| Squarepoint Ops LLC | 133,885 | $669.4K | 0.00% | +119,179+810.4% | Added |
| Summit Financial Wealth Advisors, LLC | 117,988 | $589.9K | 0.12% | +18,500+18.6% | Added |
| JPMorgan Chase & Co | 110,511 | $552.6K | 0.00% | +7,571+7.4% | Added |
| UBS Asset Management Americas Inc | 106,872 | $534.4K | 0.00% | +14,480+15.7% | Added |
| Rhumbline Advisers | 106,519 | $532.6K | 0.00% | +1,643+1.6% | Added |
| Silvercrest Asset Management Group LLC | 103,500 | $517.5K | 0.00% | 00.0% | Unchanged |
| Brown Wealth Management, LLC | 100,024 | $500.1K | 0.17% | +50,024+100.0% | Added |
| Macquarie Group Ltd | 100,000 | $500.0K | 0.00% | 00.0% | Unchanged |
| Wells Fargo & Company | 91,681 | $458.4K | 0.00% | −123,857−57.5% | Reduced |
| Commonwealth Equity Services, LLC | 89,676 | $448.0K | 0.00% | +3,582+4.2% | Added |
| Sculptor Capital LP | 88,000 | $440.0K | 0.01% | +88,000 | New |
| IMC-Chicago, LLC | 83,311 | $416.6K | 0.02% | −220,221−72.6% | Reduced |
| Invesco Ltd. | 81,128 | $405.6K | 0.00% | −165,958−67.2% | Reduced |
| Deutsche Bank AG | 79,851 | $399.3K | 0.00% | +3,026+3.9% | Added |
| MML Investors Services, LLC | 78,613 | $393.0K | 0.00% | −30,762−28.1% | Reduced |
| Alliancebernstein L.P. | 71,760 | $358.8K | 0.00% | 00.0% | Unchanged |
| Intech Investment Management LLC | 71,408 | $357.0K | 0.00% | +25,285+54.8% | Added |
| HSBC Holdings PLC | 72,258 | $348.6K | 0.00% | +72,258 | New |
| Legal & General Group Plc | 68,102 | $340.3K | 0.00% | 00.0% | Unchanged |
| LPL Financial LLC | 66,581 | $332.9K | 0.00% | +8,408+14.5% | Added |
| California State Teachers Retirement System | 66,422 | $332.1K | 0.00% | 00.0% | Unchanged |
| Baird Financial Group, Inc. | 59,440 | $297.2K | 0.00% | 00.0% | Unchanged |
| Balyasny Asset Management LLC | 54,953 | $274.8K | 0.00% | −141,374−72.0% | Reduced |
| Royal Bank of Canada | 52,467 | $262.0K | 0.00% | −4,061−7.2% | Reduced |
| D. E. Shaw & Co., Inc. | 50,516 | $252.6K | 0.00% | −409,317−89.0% | Reduced |
| Mirae Asset Global ETFs Holdings Ltd. | 48,901 | $246.6K | 0.00% | +2,241+4.8% | Added |
| State of Wisconsin Investment Board | 48,087 | $240.4K | 0.00% | −520−1.1% | Reduced |
| MetLife Investment Management | 46,870 | $234.3K | 0.00% | +2,396+5.4% | Added |
| Brevan Howard Capital Management LP | 43,804 | $219.0K | 0.01% | +29,773+212.2% | Added |
| ExodusPoint Capital Management, LP | 40,927 | $205.0K | 0.00% | +40,927 | New |
| Caption Management, LLC | 38,864 | $194.3K | 0.01% | +38,864 | New |
| Fox Run Management, L.L.C. | 38,200 | $191.0K | 0.03% | +25,295+196.0% | Added |
| Stifel Financial Corp | 36,500 | $182.5K | 0.00% | +23,397+178.6% | Added |
| Kraematon Investment Advisors, Inc | 35,085 | $175.4K | 0.18% | +4,300+14.0% | Added |
| Corebridge Financial, Inc. | 34,796 | $174.0K | 0.00% | −516−1.5% | Reduced |
| Janus Henderson Group PLC | 32,000 | $170.1K | 0.00% | 00.0% | Unchanged |
| Creative Planning | 31,606 | $158.0K | 0.00% | −5,392−14.6% | Reduced |
| Price T Rowe Associates Inc | 31,478 | $158.0K | 0.00% | +3,332+11.8% | Added |
| Wealth Effects LLC | 30,850 | $154.3K | 0.06% | −2,000−6.1% | Reduced |
| Gsa Capital Partners LLP | 30,778 | $154.0K | 0.01% | −52,179−62.9% | Reduced |
| North Star Investment Management Corp. | 30,000 | $150.0K | 0.01% | 00.0% | Unchanged |
| Profund Advisors LLC | 29,759 | $148.8K | 0.01% | −791−2.6% | Reduced |
| Farallon Capital Management, L.L.C. | 27,600 | $138.0K | 0.00% | 00.0% | Unchanged |
| Manufacturers Life Insurance Company, The | 25,197 | $126.0K | 0.00% | −463−1.8% | Reduced |
| Jefferies Financial Group Inc. | 25,000 | $125.0K | 0.00% | 00.0% | Unchanged |
| Marex Group plc | 25,000 | $125.0K | 0.00% | 00.0% | Unchanged |
| Horizon Wealth Management, LLC | 25,000 | $125.0K | 0.02% | +25,000 | New |
| GWM Advisors LLC | 24,759 | $123.8K | 0.00% | −366−1.5% | Reduced |
| National Asset Management, Inc. | 24,300 | $121.5K | 0.00% | −154−0.6% | Reduced |
| Cetera Investment Advisers | 22,802 | $114.0K | 0.00% | +8,449+58.9% | Added |
| Envestnet Asset Management Inc | 22,237 | $111.2K | 0.00% | +22,237 | New |
| DCF Advisers, LLC | 21,770 | $108.8K | 0.06% | −47,098−68.4% | Reduced |
| Concurrent Investment Advisors, LLC | 21,693 | $108.5K | 0.00% | +21,693 | New |
| Resources Investment Advisors, LLC. | 21,590 | $108.0K | 0.00% | −2,887−11.8% | Reduced |
| New York State Common Retirement Fund | 21,447 | $107.2K | 0.00% | 00.0% | Unchanged |
| FMR LLC | 20,803 | $104.0K | 0.00% | −35,936−63.3% | Reduced |
| Simplex Trading, LLC | 20,821 | $104.0K | 0.00% | −160,351−88.5% | Reduced |
| Arizona State Retirement System | 20,386 | $101.9K | 0.00% | −172−0.8% | Reduced |
| Vivaldi Capital Management, LLC | 20,000 | $100.0K | 0.02% | 00.0% | Unchanged |
| Quest Partners LLC | 19,820 | $99.1K | 0.01% | +19,820 | New |
| Advisor Group Holdings, Inc. | 19,688 | $98.4K | 0.00% | −1,360−6.5% | Reduced |
| Teacher Retirement System of Texas | 19,144 | $95.7K | 0.00% | −2,061−9.7% | Reduced |
| Virtus Investment Advisers, Inc. | 19,116 | $95.6K | 0.03% | +19,116 | New |