AltimmuneALT
13F holders, Q4 2025 (December 31)183holders +25
44new positions
20sold out
6famous investors
$3.61avg. 13F price*
At the end of Q4 2025, 183 institutions reported holding Altimmune Inc. (ALT) in their 13F filings, up 25 from Q3 2025. 44 opened new positions and 20 sold out. The largest holders were BlackRock, Inc. ($35.0M), Vanguard Group Inc. ($34.3M) and State Street Corp. ($18.5M). 6 famous investors held it, including David E. Shaw (0.0% of D. E. Shaw & Co.'s portfolio), Ken Griffin (0.0% of Citadel Advisors's portfolio) and Jeremy Grantham (0.0% of GMO's portfolio).
- Company
- Altimmune Inc.
- CUSIP
- 02155H200
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q3 2025 → Q4 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 44 | $10.5M |
| Exits | 20 | $4.0M |
All 13F filers, Q3 2025 → Q4 2025: 17,171,261 shares bought and 3,920,757 shares sold, net +13,250,504 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 183 holders
| BlackRock, Inc. | 0.00% | Add +52.3% | 9,704,298 | $35.0M |
| Vanguard Group Inc. | 0.00% | Add +48.9% | 9,491,159 | $34.3M |
| State Street Corp. | 0.00% | Add +42.2% | 5,119,703 | $18.5M |
| Geode Capital Management, LLC | 0.00% | Add +13.6% | 2,292,410 | $8.3M |
| Tang Capital Management LLC | 0.38% | No change | 2,131,307 | $7.7M |
| Jane Street Group, LLC | 0.01% | Add +536.7% | 1,783,950 | $6.4M |
| Susquehanna International Group, LLP | 0.01% | Reduce -0.4% | 1,369,017 | $4.9M |
| Morgan Stanley | 0.00% | Reduce -8.8% | 1,359,885 | $4.9M |
| Goldman Sachs Group Inc. | 0.00% | Add +140.0% | 1,349,293 | $4.9M |
| D. E. Shaw & Co. | 0.00% | Add +272.8% | 1,343,583 | $4.9M |
| Citadel Advisors | 0.00% | Add +4.4% | 1,337,927 | $4.8M |
| Two Sigma Investments, LP | 0.01% | Reduce -36.6% | 1,265,683 | $4.6M |
| Nuveen, LLC | 0.00% | Add +514.9% | 1,244,211 | $4.5M |
| Knoll Capital Management, LLC | 1.86% | No change | 1,121,524 | $4.0M |
| Marshall Wace, LLP | 0.00% | New | 922,777 | $3.3M |
| Two Sigma Advisers, LP | 0.01% | Reduce -44.4% | 793,900 | $2.9M |
| Northern Trust Corp. | 0.00% | Add +9.0% | 715,991 | $2.6M |
| UBS Group AG | 0.00% | Reduce -0.1% | 642,048 | $2.3M |
| FMR LLC | 0.00% | Add +26.7% | 564,093 | $2.0M |
| Schroder Investment Management Group | 0.00% | New | 469,013 | $1.7M |
| Barclays PLC | 0.00% | Add +17.7% | 400,595 | $1.4M |
| Soviero Asset Management, LP | 0.75% | New | 400,000 | $1.4M |
| Bank of America Corp. | 0.00% | Add +19.8% | 383,783 | $1.4M |
| Beirne Wealth Consulting Services, LLC | 0.39% | Reduce -8.3% | 376,458 | $1.4M |
| Bank of New York Mellon Corp | 0.00% | Add +3.6% | 354,201 | $1.3M |
| Dimensional Fund Advisors LP | 0.00% | Reduce -4.7% | 283,703 | $1.0M |
| Charles Schwab Investment Management Inc. | 0.00% | Add +38.8% | 283,669 | $1.0M |
| Sculptor Capital LP | 0.02% | No change | 276,700 | $999K |
| Brown Wealth Management, LLC | 0.25% | Add +10.7% | 258,673 | $934K |
| Wellington Management Group LLP | 0.00% | Reduce -2.8% | 257,271 | $929K |
| Steward Partners Investment Advisory, LLC | 0.00% | Add +11.9% | 245,393 | $886K |
| Jump Financial, LLC | 0.01% | Add +109.0% | 242,017 | $874K |
| Pavaki Capital Management LLC | 0.54% | — | 215,400 | $778K |
| Invesco Ltd. | 0.00% | Add +32.6% | 214,824 | $776K |
| Hennion & Walsh Asset Management, Inc. | 0.03% | Add +15.7% | 214,632 | $775K |
| Millennium Management | 0.00% | Reduce -43.6% | 207,383 | $749K |
| Rafferty Asset Management, LLC | 0.00% | Add +25.3% | 195,766 | $707K |
| Commonwealth Equity Services, LLC | 0.00% | Add +4.2% | 181,483 | $655K |
| BNP Paribas Financial Markets | 0.00% | Add +137.9% | 177,305 | $640K |
| IMC-Chicago, LLC | 0.01% | Add +50.1% | 173,130 | $625K |
| GMO | 0.00% | New | 172,559 | $623K |
| Jefferies Financial Group Inc. | 0.00% | Add +215.6% | 157,800 | $570K |
| Los Angeles Capital Management LLC | 0.00% | New | 128,529 | $523K |
| Wells Fargo & Company | 0.00% | Add +52.1% | 141,282 | $510K |
| Susquehanna Portfolio Strategies, LLC | 0.01% | Reduce -27.0% | 135,170 | $488K |
| HSBC Holdings PLC | 0.00% | Add +80.8% | 132,221 | $474K |
| Jacobs Levy Equity Management, Inc. | 0.00% | New | 124,821 | $451K |
| Stifel Financial Corp. | 0.00% | Add +104.3% | 123,416 | $446K |
| Rhumbline Advisers | 0.00% | Reduce -7.1% | 121,513 | $439K |
| Baird Financial Group, Inc. | 0.00% | No change | 119,440 | $431K |
| Brevan Howard Capital Management LP | 0.01% | Reduce -48.8% | 114,128 | $412K |
| Wealth Effects LLC | 0.13% | Add +86.7% | 111,750 | $403K |
| JPMorgan Chase & Co. | 0.00% | Add +5.4% | 104,532 | $377K |
| Silvercrest Asset Management Group LLC | 0.00% | No change | 103,500 | $374K |
| Summit Financial Wealth Advisors, LLC | 0.05% | Add +7.3% | 103,288 | $373K |
| Janney Montgomery Scott LLC | 0.00% | Add +75.2% | 102,610 | $370K |
| Nomura Asset Management International Inc. | 0.00% | — | 100,000 | $361K |
| Engineers Gate Manager LP | 0.00% | Add +112.6% | 87,264 | $315K |
| Alps Advisors Inc. | 0.00% | New | 85,677 | $309K |
| Deutsche Bank AG | 0.00% | Add +4.0% | 79,940 | $289K |
| Caption Management, LLC | 0.01% | Reduce -42.7% | 74,438 | $269K |
| Ameriprise Financial Inc. | 0.00% | Reduce -0.6% | 73,838 | $267K |
| Profund Advisors LLC | 0.01% | Add +114.5% | 72,298 | $261K |
| Alliancebernstein L.P. | 0.00% | No change | 71,760 | $259K |
| Verition Fund Management LLC | 0.00% | Add +123.0% | 69,476 | $251K |
| Walleye Capital LLC | 0.00% | Add +323.1% | 65,665 | $237K |
| LMR Partners LLP | 0.00% | New | 61,300 | $221K |
| Balyasny Asset Management L.P. | 0.00% | New | 60,109 | $217K |
| Virtu Financial LLC | 0.01% | Add +21.6% | 58,477 | $211K |
| Blair William & Co. | 0.00% | New | 56,434 | $204K |
| Raymond James Financial Inc. | 0.00% | Add +101.9% | 55,859 | $202K |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 0.00% | Add +14.5% | 52,566 | $190K |
| Intech Investment Management LLC | 0.00% | Add +36.0% | 52,557 | $190K |
| Bridgeway Capital Management, LLC | 0.00% | No change | 50,600 | $183K |
| Virtus Investment Advisers, LLC | 0.05% | Add +217.2% | 50,482 | $182K |
| T. Rowe Price Associates Inc. | 0.00% | Add +20.2% | 49,879 | $181K |
| LPL Financial LLC | 0.00% | Reduce -21.0% | 48,626 | $176K |
| Voleon Capital Management LP | 0.00% | New | 47,055 | $170K |
| Creative Planning | 0.00% | Add +28.9% | 46,886 | $169K |
| Rockefeller Capital Management L.P. | 0.00% | Add +79838.9% | 43,167 | $156K |
| MetLife Investment Management, LLC | 0.00% | Reduce -14.2% | 38,193 | $138K |
| Kingswood Wealth Advisors, LLC | 0.01% | Add +133.8% | 36,000 | $130K |
| Acadian Asset Management LLC | 0.00% | New | 35,732 | $128K |
| Kovack Advisors, Inc. | 0.01% | New | 35,215 | $127K |
| Squarepoint Ops LLC | 0.00% | Reduce -94.0% | 34,949 | $126K |
| MML Investors Services, LLC | 0.00% | No change | 34,550 | $125K |
| Group One Trading LLC | 0.00% | Reduce -77.6% | 31,372 | $113K |
| Fox Run Management, L.L.C. | 0.02% | New | 30,603 | $110K |
| Canada Pension Plan Investment Board | 0.00% | New | 30,000 | $108K |
| Cetera Investment Advisers | 0.00% | Add +46.9% | 29,687 | $107K |
| Citigroup Inc. | 0.00% | Add +189.8% | 28,324 | $102K |
| Farallon Capital Management, L.L.C. | 0.00% | No change | 27,600 | $100K |
| Manufacturers Life Insurance Company, The | 0.00% | Add +6.2% | 27,596 | $100K |
| Royal Bank of Canada | 0.00% | Reduce -58.9% | 27,414 | $99K |
| Concurrent Investment Advisors, LLC | 0.00% | Add +10.4% | 26,508 | $96K |
| Axq Capital, LP | 0.02% | Add +25.8% | 25,701 | $93K |
| Police & Firemen's Retirement System of New Jersey | 0.00% | No change | 23,573 | $85K |
| DRW Securities, LLC | 0.01% | New | 22,469 | $81K |
| New York State Common Retirement Fund | 0.00% | No change | 21,447 | $77K |
| AQR Capital Management | 0.00% | New | 21,147 | $76K |
"% of holder's portfolio" is ALT's weight in each manager's 13F, not the share of Altimmune Inc. the manager owns.