AltimmuneALT
13F holders, Q2 2026 (June 30)210holders +37
58new positions
18sold out
8famous investors
$3.04avg. 13F price*
At the end of Q2 2026, 210 institutions reported holding Altimmune Inc. (ALT) in their 13F filings, up 37 from Q1 2026. 58 opened new positions and 18 sold out. The largest holders were BlackRock, Inc. ($62.0M), Deep Track Capital, LP ($58.5M) and State Street Corp. ($36.8M). 8 famous investors held it, including Andreas Halvorsen (0.1% of Viking Global Investors's portfolio), Israel Englander (0.0% of Millennium Management's portfolio) and Steve Cohen (0.0% of Point72 Asset Management's portfolio).
- Company
- Altimmune Inc.
- CUSIP
- 02155H200
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q1 2026 → Q2 2026
| Institutions | Total Value | |
|---|---|---|
| New Positions | 58 | $175.1M |
| Exits | 18 | $11.1M |
All 13F filers, Q1 2026 → Q2 2026: 86,683,362 shares bought and 5,975,452 shares sold, net +80,707,910 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 210 holders
| BlackRock, Inc. | 0.00% | Add +59.3% | 20,385,284 | $62.0M |
| Deep Track Capital, LP | 0.86% | New | 19,250,000 | $58.5M |
| State Street Corp. | 0.00% | Add +69.3% | 12,098,540 | $36.8M |
| TCG Crossover Management, LLC | 0.73% | New | 10,000,000 | $30.4M |
| Vanguard Capital Management LLC | 0.00% | Add +44.5% | 8,177,752 | $24.9M |
| Vanguard Portfolio Management LLC | 0.00% | Add +36.2% | 7,330,265 | $22.3M |
| Marshall Wace, LLP | 0.02% | Add +70.3% | 6,841,055 | $20.8M |
| Viking Global Investors | 0.06% | New | 6,700,000 | $20.4M |
| Ra Capital Management, L.P. | 0.17% | New | 6,500,000 | $19.8M |
| Geode Capital Management, LLC | 0.00% | Add +61.3% | 5,011,314 | $15.2M |
| Woodline Partners LP | 0.03% | New | 3,400,312 | $10.3M |
| Millennium Management | 0.01% | Add +1.6% | 3,309,122 | $10.1M |
| Trails Edge Capital Partners, LP | 1.28% | New | 2,660,000 | $8.1M |
| Nuveen, LLC | 0.00% | Add +3.0% | 2,405,354 | $7.3M |
| Two Sigma Investments, LP | 0.01% | Reduce -3.9% | 2,381,142 | $7.2M |
| Goldman Sachs Group Inc. | 0.00% | Add +64.0% | 2,214,450 | $6.7M |
| Great Point Partners LLC | 1.25% | New | 1,741,232 | $5.3M |
| Northern Trust Corp. | 0.00% | Add +60.5% | 1,599,226 | $4.9M |
| Weiss Asset Management LP | 0.08% | New | 1,530,803 | $4.7M |
| Nantahala Capital Management, LLC | 0.28% | New | 1,500,000 | $4.6M |
| Vanguard Fiduciary Trust Co. | 0.00% | Add +48.7% | 1,293,001 | $3.9M |
| Cormorant Asset Management, LP | 0.19% | New | 1,250,000 | $3.8M |
| AQR Capital Management | 0.00% | Add +1328.8% | 1,220,949 | $3.7M |
| Citadel Advisors | 0.00% | Add +119.1% | 983,559 | $3.0M |
| UBS Group AG | 0.00% | Reduce -4.2% | 866,385 | $2.6M |
| Morgan Stanley | 0.00% | Reduce -2.2% | 758,435 | $2.3M |
| Bank of America Corp. | 0.00% | Add +32.9% | 757,919 | $2.3M |
| Ghisallo Capital Management LLC | 0.06% | New | 750,000 | $2.3M |
| FMR LLC | 0.00% | Add +11.1% | 748,974 | $2.3M |
| Susquehanna International Group, LLP | 0.00% | Reduce -44.9% | 731,078 | $2.2M |
| Bank of New York Mellon Corp | 0.00% | Add +66.8% | 689,713 | $2.1M |
| Tang Capital Management LLC | 0.09% | No change | 666,022 | $2.0M |
| Dimensional Fund Advisors LP | 0.00% | Reduce -38.9% | 639,436 | $1.9M |
| Charles Schwab Investment Management Inc. | 0.00% | Add +77.6% | 624,499 | $1.9M |
| Hennion & Walsh Asset Management, Inc. | 0.04% | Add +156.6% | 518,198 | $1.6M |
| Point72 Asset Management | 0.00% | Reduce -26.8% | 486,884 | $1.5M |
| Rock Springs Capital Management LP | 0.07% | New | 471,465 | $1.4M |
| Beirne Wealth Consulting Services, LLC | 0.26% | Add +2.4% | 421,858 | $1.3M |
| Wellington Management Group LLP | 0.00% | Add +69.4% | 420,300 | $1.3M |
| BNP Paribas Financial Markets | 0.00% | Reduce -14.7% | 371,176 | $1.1M |
| Barclays PLC | 0.00% | Add +82.3% | 351,587 | $1.1M |
| Invesco Ltd. | 0.00% | Add +46.0% | 332,592 | $1.0M |
| Rhumbline Advisers | 0.00% | Add +98.9% | 309,606 | $941K |
| Janney Montgomery Scott LLC | 0.00% | Add +75.3% | 302,610 | $920K |
| LMR Partners LLP | 0.01% | New | 300,000 | $912K |
| Citigroup Inc. | 0.00% | Add +285.1% | 293,948 | $894K |
| Steward Partners Investment Advisory, LLC | 0.00% | Add +5.9% | 266,671 | $811K |
| Mangrove Partners Im, LLC | 0.05% | No change | 239,280 | $727K |
| Baird Financial Group, Inc. | 0.00% | No change | 237,522 | $722K |
| Brown Wealth Management, LLC | 0.16% | No change | 236,136 | $718K |
| Rafferty Asset Management, LLC | 0.00% | Reduce -2.7% | 225,060 | $684K |
| Creative Planning | 0.00% | Add +456.4% | 218,281 | $664K |
| Wells Fargo & Company | 0.00% | Add +126.7% | 217,430 | $661K |
| Commonwealth Equity Services, LLC | 0.00% | Add +33.8% | 214,574 | $652K |
| Squarepoint Ops LLC | 0.00% | Add +1016.5% | 202,380 | $615K |
| D. E. Shaw & Co. | 0.00% | Reduce -72.3% | 201,638 | $613K |
| Alps Advisors Inc. | 0.00% | Add +86.4% | 197,374 | $600K |
| Deutsche Bank AG | 0.00% | Add +56.6% | 195,014 | $593K |
| Stifel Financial Corp. | 0.00% | Add +42.9% | 192,368 | $585K |
| Jump Financial, LLC | 0.01% | New | 190,000 | $578K |
| Man Group plc | 0.00% | Add +33.9% | 173,872 | $529K |
| T. Rowe Price Associates Inc. | 0.00% | Add +78.8% | 165,390 | $503K |
| Knoll Capital Management, LLC | 0.23% | No change | 160,000 | $486K |
| Birchview Capital, LP | 0.22% | New | 152,681 | $464K |
| Alliancebernstein L.P. | 0.00% | Add +96.3% | 140,850 | $434K |
| Brevan Howard Capital Management LP | 0.01% | Add +66.8% | 130,781 | $398K |
| XTX Topco Ltd | 0.01% | New | 128,088 | $389K |
| Virtus Investment Advisers, LLC | 0.09% | Add +142.3% | 125,363 | $381K |
| Wealth Effects LLC | 0.10% | Reduce -7.0% | 122,650 | $373K |
| LPL Financial LLC | 0.00% | Add +17.5% | 121,952 | $371K |
| MetLife Investment Management, LLC | 0.00% | Add +61.8% | 116,856 | $355K |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 0.00% | Add +52.3% | 117,682 | $355K |
| Profund Advisors LLC | 0.01% | Add +10.1% | 113,598 | $345K |
| Jefferies Financial Group Inc. | 0.00% | No change | 110,000 | $334K |
| Silvercrest Asset Management Group LLC | 0.00% | No change | 103,500 | $315K |
| Susquehanna Portfolio Strategies, LLC | 0.01% | New | 103,374 | $314K |
| Summit Financial Wealth Advisors, LLC | 0.04% | No change | 103,288 | $314K |
| JPMorgan Chase & Co. | 0.00% | Reduce -16.4% | 106,625 | $313K |
| ADAR1 Capital Management, LLC | 0.01% | New | 102,823 | $313K |
| Mariner, LLC | 0.00% | New | 101,123 | $307K |
| Nomura Asset Management International Inc. | 0.00% | No change | 100,000 | $304K |
| Canada Pension Plan Investment Board | 0.00% | Add +63.8% | 87,300 | $265K |
| GMO | 0.00% | Reduce -33.7% | 83,837 | $255K |
| Vanguard Global Advisers, LLC | 0.00% | Add +75.2% | 75,045 | $228K |
| Kingswood Wealth Advisors, LLC | 0.01% | Reduce -2.6% | 74,500 | $226K |
| Renaissance Technologies | 0.00% | New | 71,600 | $218K |
| Ameriprise Financial Inc. | 0.00% | Reduce -4.7% | 68,571 | $208K |
| Ieq Capital, LLC | 0.00% | New | 66,954 | $204K |
| PVG Asset Management Corp. | 0.12% | No change | 66,120 | $201K |
| HSBC Holdings PLC | 0.00% | Reduce -58.2% | 64,460 | $200K |
| Leonteq Securities AG | 0.01% | Reduce -1.5% | 64,000 | $195K |
| Police & Firemen's Retirement System of New Jersey | 0.00% | Add +65.5% | 58,625 | $178K |
| Axq Capital, LP | 0.02% | Add +19.0% | 56,810 | $173K |
| Envestnet Asset Management Inc. | 0.00% | New | 56,743 | $172K |
| Corient Private Wealth LP | 0.00% | Add +77.5% | 54,226 | $165K |
| Mercer Global Advisors Inc. | 0.00% | New | 53,115 | $161K |
| New York State Common Retirement Fund | 0.00% | Add +145.9% | 52,747 | $160K |
| Manufacturers Life Insurance Company, The | 0.00% | Add +49.7% | 52,036 | $158K |
| Cetera Investment Advisers | 0.00% | Add +46.4% | 51,901 | $158K |
| Rockefeller Capital Management L.P. | 0.00% | Add +7.3% | 49,740 | $151K |
"% of holder's portfolio" is ALT's weight in each manager's 13F, not the share of Altimmune Inc. the manager owns.