AltimmuneALT
13F holders, Q2 2025 (June 30)180holders +3
37new positions
34sold out
3famous investors
$3.87avg. 13F price*
At the end of Q2 2025, 180 institutions reported holding Altimmune Inc. (ALT) in their 13F filings, up 3 from Q1 2025. 37 opened new positions and 34 sold out. The largest holders were BlackRock, Inc. ($24.7M), Vanguard Group Inc. ($20.0M) and State Street Corp. ($10.7M). 3 famous investors held it, including Ken Griffin (0.0% of Citadel Advisors's portfolio), Israel Englander (0.0% of Millennium Management's portfolio) and David E. Shaw (0.0% of D. E. Shaw & Co.'s portfolio).
- Company
- Altimmune Inc.
- CUSIP
- 02155H200
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q1 2025 → Q2 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 37 | $7.5M |
| Exits | 34 | $16.3M |
All 13F filers, Q1 2025 → Q2 2025: 8,307,358 shares bought and 8,906,825 shares sold, net −599,467 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 180 holders
| BlackRock, Inc. | 0.00% | Add +3.9% | 6,372,560 | $24.7M |
| Vanguard Group Inc. | 0.00% | Add +17.2% | 5,167,124 | $20.0M |
| State Street Corp. | 0.00% | Reduce -18.8% | 2,753,638 | $10.7M |
| Tang Capital Management LLC | 0.54% | No change | 2,750,000 | $10.6M |
| Geode Capital Management, LLC | 0.00% | Add +13.4% | 1,934,880 | $7.5M |
| Susquehanna International Group, LLP | 0.01% | Add +50.5% | 1,619,747 | $6.3M |
| Knoll Capital Management, LLC | 3.09% | No change | 1,121,524 | $4.3M |
| Caption Management, LLC | 0.35% | Add +2423.6% | 980,781 | $3.8M |
| Federated Hermes, Inc. | 0.01% | Add +387.6% | 915,458 | $3.5M |
| UBS Group AG | 0.00% | Add +12.5% | 886,918 | $3.4M |
| Morgan Stanley | 0.00% | Add +27.1% | 835,407 | $3.2M |
| Bank of America Corp. | 0.00% | Add +155.2% | 716,019 | $2.8M |
| Northern Trust Corp. | 0.00% | Add +0.6% | 640,346 | $2.5M |
| Citadel Advisors | 0.00% | New | 523,461 | $2.0M |
| Goldman Sachs Group Inc. | 0.00% | Add +27.9% | 499,238 | $1.9M |
| Group One Trading LLC | 0.06% | Add +82.9% | 469,389 | $1.8M |
| Dimensional Fund Advisors LP | 0.00% | Reduce -9.1% | 447,470 | $1.7M |
| Two Sigma Investments, LP | 0.00% | Reduce -61.9% | 437,286 | $1.7M |
| FMR LLC | 0.00% | Add +1831.7% | 401,843 | $1.6M |
| Beirne Wealth Consulting Services, LLC | 0.43% | Add +16.3% | 342,458 | $1.3M |
| Bank of New York Mellon Corp | 0.00% | Add +75.7% | 332,016 | $1.3M |
| Barclays PLC | 0.00% | Add +55.8% | 292,095 | $1.1M |
| Virtu Financial LLC | 0.05% | New | 267,778 | $1.0M |
| Scientech Research LLC | 0.24% | New | 254,312 | $984K |
| Wellington Management Group LLP | 0.00% | Add +12.0% | 251,866 | $975K |
| Caitong International Asset Management Co., Ltd | 0.66% | Add +25474.2% | 239,630 | $927K |
| Charles Schwab Investment Management Inc. | 0.00% | Add +10.2% | 233,506 | $904K |
| Brown Wealth Management, LLC | 0.28% | Add +131.0% | 231,083 | $894K |
| Steward Partners Investment Advisory, LLC | 0.01% | Add +43.0% | 213,384 | $826K |
| Gerber, LLC | 0.56% | Reduce -26.6% | 206,778 | $800K |
| Nuveen, LLC | 0.00% | Reduce -23.3% | 202,355 | $783K |
| Hennion & Walsh Asset Management, Inc. | 0.03% | Reduce -4.4% | 188,955 | $731K |
| IMC-Chicago, LLC | 0.02% | Add +124.2% | 186,818 | $723K |
| Exchange Traded Concepts, LLC | 0.01% | Add +14.4% | 175,707 | $680K |
| Moody Aldrich Partners LLC | 0.12% | New | 157,614 | $610K |
| Sculptor Capital LP | 0.02% | Add +71.6% | 151,000 | $584K |
| Intech Investment Management LLC | 0.01% | Add +102.9% | 144,890 | $561K |
| Woodline Partners LP | 0.00% | New | 142,863 | $553K |
| Brevan Howard Capital Management LP | 0.01% | Add +204.1% | 133,209 | $516K |
| Two Sigma Advisers, LP | 0.00% | Reduce -51.1% | 129,200 | $500K |
| Summit Financial Wealth Advisors, LLC | 0.09% | Add +4.2% | 122,988 | $476K |
| Gsa Capital Partners LLP | 0.03% | Add +294.3% | 121,364 | $470K |
| Rhumbline Advisers | 0.00% | Add +7.0% | 113,981 | $441K |
| Ameriprise Financial Inc. | 0.00% | Reduce -92.1% | 113,875 | $441K |
| Invesco Ltd. | 0.00% | Add +31.7% | 106,863 | $414K |
| Avidity Partners Management LP | 0.08% | New | 105,000 | $406K |
| JPMorgan Chase & Co. | 0.00% | Reduce -5.3% | 104,697 | $405K |
| Silvercrest Asset Management Group LLC | 0.00% | No change | 103,500 | $401K |
| Rafferty Asset Management, LLC | 0.00% | Reduce -29.0% | 102,011 | $395K |
| Macquarie Group Ltd. | 0.00% | No change | 100,000 | $387K |
| Simplex Trading, LLC | 0.01% | Add +380.1% | 99,967 | $386K |
| Commonwealth Equity Services, LLC | 0.00% | Add +10.3% | 98,921 | $383K |
| Wells Fargo & Company | 0.00% | Add +7.3% | 98,378 | $381K |
| Centiva Capital, LP | 0.02% | New | 92,319 | $357K |
| HSBC Holdings PLC | 0.00% | Add +18.3% | 85,468 | $329K |
| Susquehanna Portfolio Strategies, LLC | 0.01% | New | 84,329 | $326K |
| Millennium Management | 0.00% | Reduce -93.0% | 78,294 | $303K |
| LPL Financial LLC | 0.00% | Add +13.4% | 75,493 | $292K |
| Alliancebernstein L.P. | 0.00% | No change | 71,760 | $278K |
| Deutsche Bank AG | 0.00% | Reduce -11.4% | 70,771 | $274K |
| Citigroup Inc. | 0.00% | Reduce -58.3% | 68,181 | $264K |
| Royal Bank of Canada | 0.00% | Add +16.2% | 60,963 | $236K |
| Baird Financial Group, Inc. | 0.00% | No change | 59,440 | $230K |
| D. E. Shaw & Co. | 0.00% | Add +1.5% | 51,258 | $198K |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 0.00% | Reduce -3.2% | 47,348 | $181K |
| MetLife Investment Management, LLC | 0.00% | No change | 46,870 | $181K |
| Stifel Financial Corp. | 0.00% | Add +13.9% | 41,560 | $161K |
| Axq Capital, LP | 0.05% | New | 41,282 | $160K |
| Wolverine Trading, LLC | 0.00% | New | 45,528 | $159K |
| Creative Planning | 0.00% | Add +30.2% | 41,164 | $159K |
| ExodusPoint Capital Management, LP | 0.00% | Reduce -4.1% | 39,259 | $152K |
| MML Investors Services, LLC | 0.00% | Reduce -50.0% | 39,318 | $152K |
| Jefferies Financial Group Inc. | 0.00% | Add +40.0% | 35,000 | $135K |
| T. Rowe Price Associates Inc. | 0.00% | Add +8.8% | 34,231 | $133K |
| Kraematon Investment Advisors, Inc. | 0.12% | Reduce -4.3% | 33,585 | $130K |
| Envestnet Asset Management Inc. | 0.00% | Add +48.0% | 32,908 | $127K |
| Wealth Effects LLC | 0.05% | Add +2.9% | 31,750 | $123K |
| Verition Fund Management LLC | 0.00% | New | 31,154 | $121K |
| Wealth Enhancement Advisory Services, LLC | 0.00% | Add +70.5% | 24,828 | $118K |
| Manufacturers Life Insurance Company, The | 0.00% | Add +10.9% | 27,945 | $108K |
| Farallon Capital Management, L.L.C. | 0.00% | No change | 27,600 | $107K |
| Raymond James Financial Inc. | 0.00% | Add +77.1% | 25,969 | $101K |
| Concurrent Investment Advisors, LLC | 0.00% | Add +16.4% | 25,258 | $98K |
| OneDigital Investment Advisors LLC | 0.00% | Add +11.8% | 24,147 | $93K |
| DLD Asset Management, LP | 0.04% | New | 22,600 | $87K |
| Marshall Wace, LLP | 0.00% | Reduce -98.1% | 22,100 | $86K |
| Profund Advisors LLC | 0.00% | Reduce -27.0% | 21,713 | $84K |
| New York State Common Retirement Fund | 0.00% | No change | 21,447 | $83K |
| Baader Bank Aktiengesellschaft | 0.01% | New | 34,292 | $82K |
| Voya Investment Management LLC | 0.00% | Add +9.9% | 20,838 | $81K |
| Glenmede Investment Management, LP | 0.00% | — | 20,465 | $79K |
| Sunbelt Securities, Inc. | 0.01% | No change | 10,844 | $78K |
| Debussy Capital Management LP | 0.01% | No change | 20,000 | $77K |
| AlphaQuest LLC | 0.01% | No change | 19,820 | $77K |
| ProShare Advisors LLC | 0.00% | Add +0.3% | 18,898 | $73K |
| Cambridge Investment Research Advisors, Inc. | 0.00% | Add +19.1% | 18,668 | $72K |
| Headlands Technologies LLC | 0.01% | New | 18,557 | $72K |
| Sei Investments Co. | 0.00% | New | 18,421 | $71K |
| B. Riley Wealth Advisors, Inc. | 0.00% | Reduce -24.7% | 18,288 | $71K |
| Cetera Investment Advisers | 0.00% | Reduce -20.4% | 18,150 | $70K |
"% of holder's portfolio" is ALT's weight in each manager's 13F, not the share of Altimmune Inc. the manager owns.