AltimmuneALT
13F holders, Q1 2026 (March 31)173holders −10
25new positions
34sold out
6famous investors
$3.08avg. 13F price*
At the end of Q1 2026, 173 institutions reported holding Altimmune Inc. (ALT) in their 13F filings, down 10 from Q4 2025. 25 opened new positions and 34 sold out. The largest holders were BlackRock, Inc. ($39.4M), State Street Corp. ($22.0M) and Vanguard Capital Management LLC ($17.4M). 6 famous investors held it, including Israel Englander (0.0% of Millennium Management's portfolio), Steve Cohen (0.0% of Point72 Asset 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 Q4 2025 → Q1 2026
| Institutions | Total Value | |
|---|---|---|
| New Positions | 25 | $12.0M |
| Exits | 34 | $13.5M |
All 13F filers, Q4 2025 → Q1 2026: 21,772,185 shares bought and 9,124,627 shares sold, net +12,647,558 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 173 holders
| BlackRock, Inc. | 0.00% | Add +31.9% | 12,795,277 | $39.4M |
| State Street Corp. | 0.00% | Add +39.6% | 7,145,550 | $22.0M |
| Vanguard Capital Management LLC | 0.00% | — | 5,658,049 | $17.4M |
| Vanguard Portfolio Management LLC | 0.00% | — | 5,382,002 | $16.6M |
| Marshall Wace, LLP | 0.01% | Add +335.4% | 4,017,901 | $12.4M |
| Millennium Management | 0.01% | Add +1471.1% | 3,258,191 | $10.0M |
| Geode Capital Management, LLC | 0.00% | Add +35.5% | 3,107,096 | $9.6M |
| Alyeska Investment Group, L.P. | 0.02% | New | 2,644,600 | $8.1M |
| Two Sigma Investments, LP | 0.01% | Add +95.8% | 2,478,900 | $7.6M |
| Nuveen, LLC | 0.00% | Add +87.6% | 2,334,601 | $7.2M |
| Goldman Sachs Group Inc. | 0.00% | Add +0.1% | 1,350,649 | $4.2M |
| Susquehanna International Group, LLP | 0.01% | Reduce -3.1% | 1,325,956 | $4.1M |
| Dimensional Fund Advisors LP | 0.00% | Add +268.7% | 1,045,926 | $3.2M |
| Northern Trust Corp. | 0.00% | Add +39.2% | 996,721 | $3.1M |
| UBS Group AG | 0.00% | Add +40.9% | 904,768 | $2.8M |
| Vanguard Fiduciary Trust Co. | 0.00% | — | 869,318 | $2.7M |
| Morgan Stanley | 0.00% | Reduce -43.0% | 775,258 | $2.4M |
| D. E. Shaw & Co. | 0.00% | Reduce -45.9% | 727,001 | $2.2M |
| FMR LLC | 0.00% | Add +19.5% | 673,964 | $2.1M |
| Tang Capital Management LLC | 0.10% | Reduce -68.8% | 666,022 | $2.1M |
| Point72 Asset Management | 0.00% | New | 665,289 | $2.0M |
| Schroder Investment Management Group | 0.00% | Add +42.4% | 667,837 | $1.9M |
| Bank of America Corp. | 0.00% | Add +48.6% | 570,203 | $1.8M |
| Citadel Advisors | 0.00% | Reduce -66.5% | 448,873 | $1.4M |
| BNP Paribas Financial Markets | 0.00% | Add +145.4% | 435,078 | $1.3M |
| Bank of New York Mellon Corp | 0.00% | Add +16.7% | 413,503 | $1.3M |
| Beirne Wealth Consulting Services, LLC | 0.36% | Add +9.4% | 411,858 | $1.3M |
| Charles Schwab Investment Management Inc. | 0.00% | Add +24.0% | 351,681 | $1.1M |
| Steward Partners Investment Advisory, LLC | 0.00% | Add +2.6% | 251,781 | $775K |
| Wellington Management Group LLP | 0.00% | Reduce -3.5% | 248,158 | $764K |
| Mangrove Partners Im, LLC | 0.06% | New | 239,280 | $737K |
| Baird Financial Group, Inc. | 0.00% | Add +98.9% | 237,522 | $732K |
| Brown Wealth Management, LLC | 0.19% | Reduce -8.7% | 236,136 | $727K |
| Rafferty Asset Management, LLC | 0.00% | Add +18.1% | 231,271 | $712K |
| Invesco Ltd. | 0.00% | Add +6.1% | 227,857 | $702K |
| Hennion & Walsh Asset Management, Inc. | 0.02% | Reduce -5.9% | 201,989 | $622K |
| Barclays PLC | 0.00% | Reduce -51.9% | 192,871 | $594K |
| Janney Montgomery Scott LLC | 0.00% | Add +68.2% | 172,610 | $532K |
| Commonwealth Equity Services, LLC | 0.00% | Reduce -11.6% | 160,374 | $494K |
| Knoll Capital Management, LLC | 0.26% | Reduce -85.7% | 160,000 | $493K |
| Rhumbline Advisers | 0.00% | Add +28.1% | 155,671 | $479K |
| HSBC Holdings PLC | 0.00% | Add +16.8% | 154,365 | $476K |
| Stifel Financial Corp. | 0.00% | Add +9.1% | 134,616 | $415K |
| Wealth Effects LLC | 0.14% | Add +18.1% | 131,950 | $406K |
| Man Group plc | 0.00% | Add +585.7% | 129,846 | $400K |
| GMO | 0.00% | Reduce -26.8% | 126,389 | $389K |
| Deutsche Bank AG | 0.00% | Add +55.8% | 124,516 | $384K |
| JPMorgan Chase & Co. | 0.00% | Add +22.0% | 127,498 | $367K |
| Engineers Gate Manager LP | 0.00% | Add +33.1% | 116,112 | $358K |
| Jefferies Financial Group Inc. | 0.00% | Reduce -30.3% | 110,000 | $339K |
| Alps Advisors Inc. | 0.00% | Add +23.6% | 105,881 | $326K |
| LPL Financial LLC | 0.00% | Add +113.4% | 103,756 | $320K |
| Silvercrest Asset Management Group LLC | 0.00% | No change | 103,500 | $319K |
| Summit Financial Wealth Advisors, LLC | 0.05% | No change | 103,288 | $318K |
| Profund Advisors LLC | 0.01% | Add +42.7% | 103,141 | $318K |
| Nomura Asset Management International Inc. | 0.00% | No change | 100,000 | $308K |
| Wells Fargo & Company | 0.00% | Reduce -32.1% | 95,907 | $295K |
| T. Rowe Price Associates Inc. | 0.00% | Add +85.5% | 92,512 | $285K |
| AQR Capital Management | 0.00% | Add +304.1% | 85,454 | $263K |
| Alliancebernstein L.P. | 0.00% | No change | 71,760 | $259K |
| Brevan Howard Capital Management LP | 0.00% | Reduce -31.3% | 78,403 | $241K |
| Kingswood Wealth Advisors, LLC | 0.01% | Add +112.5% | 76,500 | $236K |
| Citigroup Inc. | 0.00% | Add +169.5% | 76,327 | $235K |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 0.00% | Add +47.0% | 77,292 | $235K |
| Caption Management, LLC | 0.01% | No change | 74,438 | $229K |
| MetLife Investment Management, LLC | 0.00% | Add +89.1% | 72,213 | $222K |
| Ameriprise Financial Inc. | 0.00% | Reduce -2.5% | 71,968 | $222K |
| Virtu Financial LLC | 0.01% | Add +20.6% | 70,540 | $217K |
| Leonteq Securities AG | 0.01% | Add +6400.0% | 65,000 | $200K |
| American Century Companies Inc. | 0.00% | New | 62,909 | $194K |
| PVG Asset Management Corp. | 0.10% | New | 66,120 | $175K |
| SG Americas Securities, LLC | 0.00% | Add +426.0% | 55,625 | $171K |
| Raymond James Financial Inc. | 0.00% | Reduce -3.7% | 53,796 | $166K |
| Canada Pension Plan Investment Board | 0.00% | Add +77.7% | 53,300 | $164K |
| Virtus Investment Advisers, LLC | 0.04% | Add +2.5% | 51,743 | $159K |
| ExodusPoint Capital Management, LP | 0.00% | Add +307.8% | 48,619 | $150K |
| Axq Capital, LP | 0.02% | Add +85.8% | 47,752 | $147K |
| Rockefeller Capital Management L.P. | 0.00% | Add +7.4% | 46,370 | $143K |
| Vanguard Global Advisers, LLC | 0.00% | — | 42,826 | $132K |
| Creative Planning | 0.00% | Reduce -16.3% | 39,229 | $121K |
| Kovack Advisors, Inc. | 0.01% | Add +2.9% | 36,250 | $112K |
| EverSource Wealth Advisors, LLC | 0.00% | Add +101.6% | 35,650 | $110K |
| Cetera Investment Advisers | 0.00% | Add +19.4% | 35,453 | $109K |
| Police & Firemen's Retirement System of New Jersey | 0.00% | Add +50.3% | 35,433 | $109K |
| Manufacturers Life Insurance Company, The | 0.00% | Add +26.0% | 34,763 | $107K |
| MML Investors Services, LLC | 0.00% | No change | 34,550 | $106K |
| Intech Investment Management LLC | 0.00% | Reduce -41.5% | 30,761 | $95K |
| Corient Private Wealth LP | 0.00% | New | 30,553 | $94K |
| HUB Investment Partners, LLC | 0.00% | Add +112.5% | 30,218 | $93K |
| E Fund Management Co., Ltd. | 0.00% | — | 29,072 | $90K |
| Blair William & Co. | 0.00% | Reduce -50.0% | 28,223 | $87K |
| Farallon Capital Management, L.L.C. | 0.00% | No change | 27,600 | $85K |
| Voleon Capital Management LP | 0.00% | Reduce -42.3% | 27,142 | $84K |
| Concurrent Investment Advisors, LLC | 0.00% | No change | 26,508 | $82K |
| Jones Financial Companies LLLP | 0.00% | Add +106.5% | 25,869 | $78K |
| Royal Bank of Canada | 0.00% | Reduce -7.7% | 25,317 | $78K |
| ProShare Advisors LLC | 0.00% | Add +17.8% | 24,523 | $76K |
| Polymer Capital Management (US) LLC | 0.01% | New | 23,999 | $74K |
| Simplex Trading, LLC | 0.00% | New | 22,841 | $70K |
| China Universal Asset Management Co., Ltd. | 0.01% | Add +30.7% | 22,223 | $68K |
| Scientech Research LLC | 0.06% | New | 21,840 | $67K |
| Prudential Financial Inc. | 0.00% | New | 21,790 | $67K |
| New York State Common Retirement Fund | 0.00% | No change | 21,447 | $66K |
| Voya Investment Management LLC | 0.00% | Add +53.5% | 21,011 | $65K |
| Osaic Holdings, Inc. | 0.00% | Add +9.2% | 20,678 | $64K |
| Vontobel Holding Ltd. | 0.00% | Add +33.3% | 20,000 | $62K |
| Vines Capital Management, LLC | 0.06% | Add +5.6% | 18,884 | $58K |
| Keudell/Morrison Wealth Management | 0.01% | No change | 18,500 | $57K |
| Squarepoint Ops LLC | 0.00% | Reduce -48.1% | 18,126 | $56K |
| Caitong International Asset Management Co., Ltd | 0.01% | Add +794.9% | 17,217 | $53K |
| North Star Investment Management Corp. | 0.00% | Add +112.5% | 17,000 | $52K |
| Composition Wealth, LLC | 0.00% | Reduce -0.1% | 17,000 | $52K |
| Choreo, LLC | 0.00% | New | 16,691 | $51K |
| EFG International AG | 0.00% | No change | 16,500 | $51K |
| Russell Investments Group, Ltd. | 0.00% | Add +10.7% | 16,092 | $50K |
| Advisory Services Network, LLC | 0.00% | Add +0.7% | 15,260 | $47K |
| Victory Capital Management Inc. | 0.00% | Add +23.8% | 14,763 | $45K |
| DCF Advisers, LLC | 0.02% | Reduce -21.4% | 14,700 | $45K |
| Tower Research Capital LLC (TRC) | 0.00% | Add +76.9% | 14,488 | $45K |
| Martingale Asset Management L P | 0.00% | No change | 14,355 | $44K |
| Northeast Financial Group, Inc. | 0.01% | Add +1.9% | 13,641 | $42K |
| PFG Investments, LLC | 0.00% | New | 13,500 | $42K |
| Smith, Moore & Co. | 0.00% | New | 13,205 | $41K |
| NINE MASTS CAPITAL Ltd | 0.01% | New | 11,850 | $36K |
| Legal & General Group Plc | 0.00% | Add +22.8% | 11,496 | $35K |
| Cambridge Investment Research Advisors, Inc. | 0.00% | New | 11,206 | $35K |
| Foundations Investment Advisors, LLC | 0.00% | New | 11,052 | $34K |
| Sunbelt Securities, Inc. | 0.00% | Add +0.2% | 10,870 | $33K |
| Xponance LLC | 0.00% | New | 10,783 | $33K |
| Ameritas Investment Partners, Inc. | 0.00% | Add +53.6% | 10,680 | $33K |
| Quantinno Capital Management LP | 0.00% | New | 10,636 | $33K |
| CreativeOne Wealth, LLC | 0.00% | No change | 10,500 | $32K |
| Vanguard Personalized Indexing Management, LLC | 0.00% | New | 10,127 | $31K |
| IMC-Chicago, LLC | 0.00% | Reduce -94.2% | 10,004 | $31K |
| Geneos Wealth Management Inc. | 0.00% | No change | 10,000 | $31K |
| SBI Securities Co., Ltd. | 0.00% | Reduce -5.9% | 8,313 | $26K |
| Acadian Asset Management LLC | 0.00% | Reduce -79.5% | 7,311 | $22K |
| California State Teachers Retirement System | 0.00% | Add +30.4% | 7,124 | $22K |
| Group One Trading LLC | 0.00% | Reduce -78.7% | 6,695 | $21K |
| Mirae Asset Global Investments Co., Ltd. | 0.00% | Add +28.8% | 6,532 | $20K |
| Activest Wealth Management | 0.00% | No change | 5,001 | $15K |
| Cwm, LLC | 0.00% | Add +46.6% | 4,519 | $14K |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.00% | Add +518.1% | 4,154 | $13K |
| Optiver Holding B.V. | 0.00% | New | 3,858 | $12K |
| Bellevue Asset Management, LLC | 0.00% | New | 2,433 | $7K |
| GF Fund Management Co. LTD. | 0.00% | Add +13.8% | 2,331 | $7K |
| HighMark Wealth Management LLC | 0.00% | No change | 2,000 | $6K |
| NewEdge Advisors, LLC | 0.00% | No change | 1,888 | $6K |
| PNC Financial Services Group, Inc. | 0.00% | Reduce -35.7% | 1,552 | $5K |
| MassMutual Private Wealth & Trust, FSB | 0.00% | Add +8.9% | 1,000 | $3K |
| US Bancorp \de | 0.00% | Add +59.2% | 890 | $3K |
| Sterling Capital Management LLC | 0.00% | Add +59.8% | 847 | $3K |
| Stone House Investment Management, LLC | 0.00% | Add +5.2% | 526 | $2K |
| Arax Advisory Partners | 0.00% | Reduce -95.8% | 339 | $1K |
| Bogart Wealth, LLC | 0.00% | New | 298 | $918 |
| Elevation Wealth Partners, LLC | 0.00% | No change | 286 | $881 |
| Legacy Wealth Managment, LLC | 0.00% | No change | 250 | $770 |
| MAI Capital Management | 0.00% | No change | 150 | $462 |
| Farther Finance Advisors, LLC | 0.00% | Add +93.2% | 141 | $440 |
| Harbour Investments, Inc. | 0.00% | New | 100 | $308 |
| Northwestern Mutual Wealth Management Co. | 0.00% | No change | 100 | $308 |
| Nisa Investment Advisors, LLC | 0.00% | No change | 95 | $293 |
| Allworth Financial LP | 0.00% | Reduce -21.4% | 70 | $216 |
| Parallel Advisors, LLC | 0.00% | No change | 40 | $123 |
| Clearstead Advisors, LLC | 0.00% | No change | 40 | $122 |
| Essential Partners LLC | 0.00% | New | 27 | $83 |
| SJS Investment Consulting Inc. | 0.00% | New | 16 | $50 |
| Bernard Wealth Management Corp. | 0.00% | No change | 15 | $47 |
| Rothschild Investment LLC | 0.00% | Add +1200.0% | 13 | $40 |
| Larson Financial Group LLC | 0.00% | Reduce -99.9% | 5 | $15 |
| First Horizon Corp. | 0.00% | No change | 3 | $9 |
| Huntington National Bank | 0.00% | No change | 2 | $6 |
| Walleye Capital LLC | 0.00% | Reduce -100.0% | 2 | $6 |
"% of holder's portfolio" is ALT's weight in each manager's 13F, not the share of Altimmune Inc. the manager owns.