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, Q2 2026
Institutional positions in Altimmune, Inc. as of Jun 30, 2026. 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
- 210
- +40 vs. Q1 2026
- Shares held
- 150.0M
- +80.7M (+116.4%) vs. Q1 2026
- Total value
- $456.1M
- +$242.7M (+113.7%) vs. Q1 2026
- New holders
- 58
- 86 more added
- Sold out
- 18
- 33 more reduced
3 institutions that held it in Q1 2026 haven't filed for Q2 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q1 2026: 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, Q2 2026
Shares, value and share of portfolio for each institution holding Altimmune, Inc.; share changes are against Q1 2026.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Commonwealth Retirement Investments LLC | 1 | $3 | 0.00% | +1 | New |
| Huntington National Bank | 2 | $6 | 0.00% | 00.0% | Unchanged |
| First Horizon Corp | 3 | $9 | 0.00% | 00.0% | Unchanged |
| Bernard Wealth Management Corp. | 15 | $46 | 0.00% | 00.0% | Unchanged |
| Parallel Advisors, LLC | 40 | $122 | 0.00% | 00.0% | Unchanged |
| Harbour Investments, Inc. | 100 | $304 | 0.00% | 00.0% | Unchanged |
| GAMMA Investing LLC | 134 | $407 | 0.00% | +134 | New |
| True Wealth Design, LLC | 196 | $596 | 0.00% | +196 | New |
| Bare Financial Services, Inc | 196 | $596 | 0.00% | +196 | New |
| RMG Wealth Management LLC | 225 | $659 | 0.00% | +225 | New |
| SJS Investment Consulting Inc. | 234 | $712 | 0.00% | +218+1,362.5% | Added |
| Parkside Financial Bank & Trust | 235 | $713 | 0.00% | +235 | New |
| Caitong International Asset Management Co., Ltd | 257 | $781 | 0.00% | −16,960−98.5% | Reduced |
| ZRC Wealth Management, LLC | 286 | $870 | 0.00% | 00.0% | Unchanged |
| Bogart Wealth, LLC | 298 | $906 | 0.00% | 00.0% | Unchanged |
| Wealth Enhancement Trust Services, Inc. | 306 | $930 | 0.00% | +306 | New |
| Clearstead Advisors, LLC | 328 | $998 | 0.00% | +288+720.0% | Added |
| Essential Partners LLC | 400 | $1.22K | 0.00% | +373+1,381.5% | Added |
| Stone House Investment Management, LLC | 526 | $1.60K | 0.00% | 00.0% | Unchanged |
| Rothschild Investment LLC | 551 | $1.68K | 0.00% | +538+4,138.5% | Added |
| Strategic Wealth Partners, Ltd. | 700 | $2.13K | 0.00% | +700 | New |
| Federated Hermes, Inc. | 760 | $2.31K | 0.00% | +760 | New |
| Nisa Investment Advisors, LLC | 895 | $2.72K | 0.00% | +800+842.1% | Added |
| Massmutual Trust Co FSB | 1,000 | $3.04K | 0.00% | 00.0% | Unchanged |
| Farther Finance Advisors, LLC | 1,044 | $3.16K | 0.00% | +903+640.4% | Added |
| Clear Street Markets LLC | 1,507 | $4.58K | 0.00% | +1,507 | New |
| GWM Advisors LLC | 1,888 | $5.74K | 0.00% | 00.0% | Unchanged |
| Optiver Holding B.V. | 1,910 | $5.81K | 0.00% | −1,948−50.5% | Reduced |
| HighMark Wealth Management LLC | 2,000 | $6.08K | 0.00% | 00.0% | Unchanged |
| Bellevue Asset Management, LLC | 2,433 | $7.40K | 0.00% | 00.0% | Unchanged |
| California State Teachers Retirement System | 2,737 | $8.32K | 0.00% | −4,387−61.6% | Reduced |
| Northwestern Mutual Wealth Management Co | 3,100 | $9.42K | 0.00% | +3,000+3,000.0% | Added |
| Pacer Advisors, Inc. | 3,759 | $11.0K | 0.00% | +3,759 | New |
| GF Fund Management Co. Ltd. | 3,844 | $11.7K | 0.00% | +1,513+64.9% | Added |
| The PNC Financial Services Group, Inc. | 3,860 | $11.7K | 0.00% | +2,308+148.7% | Added |
| Sterling Capital Management LLC | 4,006 | $12.2K | 0.00% | +3,159+373.0% | Added |
| UBS Asset Management Americas Inc | 4,154 | $12.6K | 0.00% | 00.0% | Unchanged |
| Activest Wealth Management | 5,001 | $15.2K | 0.00% | 00.0% | Unchanged |
| Allworth Financial LP | 6,892 | $21.0K | 0.00% | +6,822+9,745.7% | Added |
| Tower Research Capital LLC (TRC) | 7,477 | $22.7K | 0.00% | −7,011−48.4% | Reduced |
| SBI Securities Co., Ltd. | 8,062 | $24.5K | 0.00% | −251−3.0% | Reduced |
| Walleye Capital LLC | 8,499 | $25.8K | 0.00% | +8,497+424,850.0% | Added |
| Mirae Asset Global Investments Co., Ltd. | 8,698 | $26.4K | 0.00% | +2,166+33.2% | Added |
| Jones Financial Companies LLLP | 10,156 | $28.6K | 0.00% | −15,713−60.7% | Reduced |
| Geneos Wealth Management Inc. | 10,000 | $30.4K | 0.00% | 00.0% | Unchanged |
| Advisory Services Network, LLC | 10,760 | $32.7K | 0.00% | −4,500−29.5% | Reduced |
| Change Path, LLC | 10,850 | $33.0K | 0.00% | +350+3.3% | Added |
| CIBC Bancorp USA Inc. | 10,974 | $33.4K | 0.00% | +10,974 | New |
| Foundations Investment Advisors, LLC | 11,052 | $33.6K | 0.00% | 00.0% | Unchanged |
| Cambridge Investment Research Advisors, Inc. | 11,206 | $34.0K | 0.00% | 00.0% | Unchanged |
| SRS Capital Advisors, Inc. | 11,350 | $34.5K | 0.00% | +11,011+3,248.1% | Added |
| Royal Bank of Canada | 11,904 | $35.0K | 0.00% | −13,413−53.0% | Reduced |
| Abel Hall, LLC | 11,527 | $35.0K | 0.01% | +11,527 | New |
| Colony Group, LLC | 12,499 | $38.0K | 0.00% | +12,499 | New |
| Brighton Jones LLC | 12,596 | $38.3K | 0.00% | +12,596 | New |
| Martingale Asset Management L P | 12,855 | $39.1K | 0.00% | −1,500−10.4% | Reduced |
| Excelsior Advisor Network LLC | 13,000 | $39.5K | 0.01% | +13,000 | New |
| Smith, Moore & Co. | 13,205 | $40.1K | 0.00% | 00.0% | Unchanged |
| R Squared Ltd | 13,264 | $40.3K | 0.02% | +13,264 | New |
| Aigen Investment Management, LP | 13,496 | $41.0K | 0.01% | +13,496 | New |
| Sciencast Management LP | 13,566 | $41.2K | 0.01% | +13,566 | New |
| Polymer Capital Management (US) LLC | 14,001 | $42.6K | 0.01% | −9,998−41.7% | Reduced |
| DCF Advisers, LLC | 14,700 | $44.7K | 0.01% | 00.0% | Unchanged |
| PKS Advisory Services, LLC | 15,600 | $47.4K | 0.01% | +15,600 | New |
| JustInvest LLC | 15,978 | $48.6K | 0.00% | +5,851+57.8% | Added |
| Winton Group Ltd | 16,100 | $48.9K | 0.00% | +16,100 | New |
| EFG International AG | 16,500 | $50.2K | 0.00% | 00.0% | Unchanged |
| RSM US Wealth Management LLC | 16,709 | $50.8K | 0.00% | +18+0.1% | Added |
| Miracle Mile Advisors, LLC | 17,000 | $51.7K | 0.00% | 00.0% | Unchanged |
| Syon Capital LLC | 17,118 | $52.0K | 0.00% | +17,118 | New |
| Centiva Capital, LP | 17,938 | $54.5K | 0.00% | +17,938 | New |
| Ameritas Investment Partners, Inc. | 18,039 | $54.8K | 0.00% | +7,359+68.9% | Added |
| Neuberger Berman Group LLC | 18,664 | $56.7K | 0.00% | +18,664 | New |
| Vines Capital Management, LLC | 18,884 | $57.4K | 0.05% | 00.0% | Unchanged |
| Xponance, Inc. | 18,917 | $57.5K | 0.00% | +8,134+75.4% | Added |
| Jain Global LLC | 18,947 | $57.6K | 0.00% | +18,947 | New |
| PFG Investments, LLC | 19,000 | $57.8K | 0.00% | +5,500+40.7% | Added |
| Atria Investments LLC | 19,017 | $57.8K | 0.00% | +19,017 | New |
| Legal & General Group Plc | 19,289 | $58.6K | 0.00% | +7,793+67.8% | Added |
| EverSource Wealth Advisors, LLC | 19,717 | $59.9K | 0.00% | −15,933−44.7% | Reduced |
| Voleon Capital Management LP | 20,715 | $63.0K | 0.00% | −6,427−23.7% | Reduced |
| Advisor Group Holdings, Inc. | 21,078 | $64.1K | 0.00% | +400+1.9% | Added |
| Victory Capital Management Inc | 21,218 | $64.5K | 0.00% | +6,455+43.7% | Added |
| Raymond James Financial Inc | 21,384 | $65.0K | 0.00% | −32,412−60.2% | Reduced |
| North Star Investment Management Corp. | 22,000 | $66.9K | 0.00% | +5,000+29.4% | Added |
| Captrust Financial Advisors | 23,960 | $72.8K | 0.00% | +23,960 | New |
| nVerses Capital, LLC | 24,408 | $74.2K | 0.11% | +24,408 | New |
| Vontobel Holding Ltd. | 25,000 | $76.0K | 0.00% | +5,000+25.0% | Added |
| Two Sigma Securities, LLC | 25,435 | $77.3K | 0.01% | +25,435 | New |
| Wealth Enhancement Advisory Services, LLC | 25,989 | $79.3K | 0.00% | +25,989 | New |
| Concurrent Investment Advisors, LLC | 28,649 | $87.1K | 0.00% | +2,141+8.1% | Added |
| TCG Advisory Services, LLC | 30,319 | $92.2K | 0.00% | +101+0.3% | Added |
| Blair William & Co | 30,660 | $93.2K | 0.00% | +2,437+8.6% | Added |
| China Universal Asset Management Co., Ltd. | 30,951 | $94.1K | 0.01% | +8,728+39.3% | Added |
| E Fund Management Co., Ltd. | 31,734 | $96.5K | 0.00% | +2,662+9.2% | Added |
| Sequoia Financial Advisors, LLC | 32,285 | $98.1K | 0.00% | +32,285 | New |
| ProShare Advisors LLC | 32,427 | $98.6K | 0.00% | +7,904+32.2% | Added |
| MML Investors Services, LLC | 34,550 | $105.0K | 0.00% | 00.0% | Unchanged |
| Schonfeld Strategic Advisors LLC | 35,077 | $106.6K | 0.00% | +35,077 | New |
| Prudential Financial Inc | 35,190 | $107.0K | 0.00% | +13,400+61.5% | Added |