ALTIMMUNE INC (ALT)
Institutional ownership reported to the SEC as of Q2 2026, across 31 quarters.
209
Reporting holders
$477.9M
Reported value
78.0%
Of shares outstanding
3.5%
Held as options
+42
Holder change
Institutions report 151,769,012 shares against 194,517,701 outstanding. Shares only - option lines are excluded, which is why this can be compared with the company at all. The count comes from the cover page of the company's own most recent report, so it is dated when that was filed rather than at quarter end.
Options share is the part of reported value carried in derivative lines rather than shares. A high figure means institutions are expressing a view on this security without owning much of it.
Holders
| Filer | Value | Shares | Their book | Held | Change |
|---|---|---|---|---|---|
| BlackRock, Inc. | $62.0M | 20,385,284 | 0.00% | 8q | +59.3%+$23.1M |
| Deep Track Capital, LP | $58.5M | 19,250,000 | 0.85% | new | NEW |
| STATE STREET CORP | $36.8M | 12,098,540 | 0.00% | 22q | +69.3%+$15.1M |
| TCG Crossover Management, LLC | $30.4M | 10,000,000 | 0.73% | new | NEW |
| VANGUARD CAPITAL MANAGEMENT LLC | $24.9M | 8,177,752 | 0.00% | 2q | +44.5%+$7.7M |
| VANGUARD PORTFOLIO MANAGEMENT LLC | $22.3M | 7,330,265 | 0.00% | 2q | +36.2%+$5.9M |
| MARSHALL WACE, LLP | $20.8M | 6,841,055 | 0.02% | 3q | +70.3%+$8.6M |
| VIKING GLOBAL INVESTORS LP | $20.4M | 6,700,000 | 0.06% | new | NEW |
| RA CAPITAL MANAGEMENT, L.P. | $19.8M | 6,500,000 | 0.17% | new | NEW |
| GEODE CAPITAL MANAGEMENT, LLC | $15.2M | 5,011,314 | 0.00% | 31q | +61.3%+$5.8M |
| Woodline Partners LP | $10.3M | 3,400,312 | 0.03% | new | NEW |
| MILLENNIUM MANAGEMENT LLC | $10.1M | 3,309,122 | 0.00% | 25q | +1.6%+$154.8K |
| Nantahala Capital Management, LLC | $9.1M | 3,000,000 | 0.15% | new | NEW |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | $8.7M | 731,078 | 0.00% | 31q | -44.9%-$7.1M |
| Trails Edge Capital Partners, LP | $8.1M | 2,660,000 | 1.28% | new | NEW |
| Nuveen, LLC | $7.3M | 2,405,354 | 0.00% | 6q | +3.0%+$215.1K |
| TWO SIGMA INVESTMENTS, LP | $7.2M | 2,381,142 | 0.01% | 9q | -3.9%-$297.2K |
| GOLDMAN SACHS GROUP INC | $6.7M | 2,214,450 | 0.00% | 25q | +64.0%+$2.6M |
| CITADEL ADVISORS LLC | $5.3M | 983,559 | 0.00% | 31q | +119.1%+$2.9M |
| GREAT POINT PARTNERS LLC | $5.3M | 1,741,232 | 1.00% | new | NEW |
| NORTHERN TRUST CORP | $4.9M | 1,599,226 | 0.00% | 28q | +60.4%+$1.8M |
| Weiss Asset Management LP | $4.7M | 1,530,803 | 0.05% | new | NEW |
| VANGUARD FIDUCIARY TRUST CO | $3.9M | 1,293,001 | 0.00% | 2q | +48.7%+$1.3M |
| GROUP ONE TRADING LLC | $3.8M | options only | 0.01% | 30q | OPTIONS |
| Cormorant Asset Management, LP | $3.8M | 1,250,000 | 0.19% | new | NEW |
| AQR CAPITAL MANAGEMENT LLC | $3.7M | 1,220,949 | 0.00% | 3q | +1328.8%+$3.5M |
| UBS Group AG | $2.6M | 866,385 | 0.00% | 29q | -4.2%-$116.7K |
| MORGAN STANLEY | $2.3M | 758,435 | 0.00% | 29q | -2.2%-$51.1K |
| BANK OF AMERICA CORP /DE/ | $2.3M | 757,919 | 0.00% | 22q | +32.9%+$570.7K |
| Ghisallo Capital Management LLC | $2.3M | 750,000 | 0.04% | new | NEW |
| FMR LLC | $2.3M | 748,974 | 0.00% | 18q | +11.1%+$228.0K |
| Bank of New York Mellon Corp | $2.1M | 689,713 | 0.00% | 29q | +66.8%+$839.7K |
| TANG CAPITAL MANAGEMENT LLC | $2.0M | 666,022 | 0.09% | 21q | HELD |
| DIMENSIONAL FUND ADVISORS LP | $1.9M | 639,436 | 0.00% | 19q | -38.9%-$1.2M |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $1.9M | 624,499 | 0.00% | 24q | +77.6%+$829.4K |
| Sixth Street Partners Management Company, L.P. | $1.9M | 624,499 | 0.00% | new | NEW |
| Hennion & Walsh Asset Management, Inc. | $1.6M | 518,198 | 0.04% | 9q | +156.5%+$961.3K |
| SIMPLEX TRADING, LLC | $1.6M | options only | 0.00% | 22q | OPTIONS |
| Point72 Asset Management, L.P. | $1.5M | 486,884 | 0.00% | 2q | -26.8%-$542.4K |
| Rock Springs Capital Management LP | $1.4M | 471,465 | 0.07% | new | NEW |
| IMC-Chicago, LLC | $1.3M | options only | 0.00% | 11q | OPTIONS |
| Beirne Wealth Consulting Services, LLC | $1.3M | 421,858 | 0.26% | 23q | +2.4%+$30.4K |
| WELLINGTON MANAGEMENT GROUP LLP | $1.3M | 420,300 | 0.00% | 10q | +69.4%+$523.3K |
| BNP PARIBAS FINANCIAL MARKETS | $1.1M | 371,176 | 0.00% | 22q | -14.7%-$194.3K |
| BARCLAYS PLC | $1.1M | 351,587 | 0.00% | 25q | +82.3%+$482.5K |
| Invesco Ltd. | $1.0M | 332,592 | 0.00% | 13q | +46.0%+$318.4K |
| RHUMBLINE ADVISERS | $941.2K | 309,606 | 0.00% | 13q | +98.9%+$468.0K |
| LMR Partners LLP | $912.0K | 300,000 | 0.00% | new | NEW |
| CITIGROUP INC | $893.6K | 293,948 | 0.00% | 25q | +285.1%+$661.6K |
| JANE STREET GROUP, LLC | $841.5K | options only | 0.00% | 25q | OPTIONS |
| Steward Partners Investment Advisory, LLC | $810.7K | 266,671 | 0.00% | 11q | +5.9%+$45.3K |
| MANGROVE PARTNERS IM, LLC | $727.4K | 239,280 | 0.05% | 2q | HELD |
| Baird Financial Group, Inc. | $722.1K | 237,522 | 0.00% | 7q | HELD |
| BROWN WEALTH MANAGEMENT, LLC | $717.9K | 236,136 | 0.16% | 11q | HELD |
| Rafferty Asset Management, LLC | $684.2K | 225,060 | 0.00% | 10q | -2.7%-$18.9K |
| Creative Planning | $663.6K | 218,281 | 0.00% | 11q | +456.4%+$544.3K |
| WELLS FARGO & COMPANY/MN | $661.0K | 217,430 | 0.00% | 25q | +13.4%+$77.9K |
| COMMONWEALTH EQUITY SERVICES, LLC | $652.3K | 214,574 | 0.00% | 16q | +33.8%+$164.8K |
| Squarepoint Ops LLC | $615.2K | 202,380 | 0.00% | 4q | +1016.5%+$560.1K |
| D. E. Shaw & Co., Inc. | $613.0K | 201,638 | 0.00% | 13q | -72.3%-$1.6M |
| ALPS ADVISORS INC | $600.0K | 197,374 | 0.00% | 3q | +86.4%+$278.1K |
| DEUTSCHE BANK AG\ | $592.8K | 195,014 | 0.00% | 12q | +56.6%+$214.3K |
| STIFEL FINANCIAL CORP | $584.8K | 192,368 | 0.00% | 9q | +42.9%+$175.6K |
| Jump Financial, LLC | $577.6K | 190,000 | 0.00% | new | NEW |
| Man Group plc | $528.6K | 173,872 | 0.00% | 3q | +33.9%+$133.8K |
| Knoll Capital Management, LLC | $486.4K | 160,000 | 0.27% | 11q | HELD |
| Birchview Capital, LP | $464.1K | 152,681 | 0.22% | new | NEW |
| ALLIANCEBERNSTEIN L.P. | $433.8K | 140,850 | 0.00% | 13q | +96.3%+$212.8K |
| Brevan Howard Capital Management LP | $397.6K | 130,781 | 0.00% | 7q | +66.8%+$159.2K |
| XTX Topco Ltd | $389.4K | 128,088 | 0.01% | new | NEW |
| Virtus Investment Advisers, LLC | $381.1K | 125,363 | 0.09% | 6q | +142.3%+$223.8K |
| WEALTH EFFECTS LLC | $372.9K | 122,650 | 0.10% | 10q | -7.0%-$28.3K |
| LPL Financial LLC | $370.7K | 121,952 | 0.00% | 11q | +17.5%+$55.3K |
| MetLife Investment Management, LLC | $355.2K | 116,856 | 0.00% | 13q | +61.8%+$135.7K |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | $355.1K | 117,682 | 0.00% | 9q | +52.3%+$121.9K |
| PROFUND ADVISORS LLC | $345.3K | 113,598 | 0.01% | 10q | +10.1%+$31.8K |
| Jefferies Financial Group Inc. | $334.4K | 110,000 | 0.00% | 9q | HELD |
| MERCER GLOBAL ADVISORS INC /ADV | $322.9K | 106,230 | 0.00% | new | NEW |
| Corient Private Wealth LP | $322.4K | 106,064 | 0.00% | 2q | +247.1%+$229.6K |
| SILVERCREST ASSET MANAGEMENT GROUP LLC | $314.6K | 103,500 | 0.00% | 18q | HELD |
| Susquehanna Portfolio Strategies, LLC | $314.3K | 103,374 | 0.01% | new | NEW |
| Summit Financial Wealth Advisors, LLC | $314.0K | 103,288 | 0.04% | 9q | HELD |
| JPMORGAN CHASE & CO | $313.5K | 106,625 | 0.00% | 21q | -16.4%-$61.4K |
| ADAR1 Capital Management, LLC | $312.6K | 102,823 | 0.01% | new | NEW |
| Mariner, LLC | $307.4K | 101,123 | 0.00% | new | NEW |
| NOMURA ASSET MANAGEMENT INTERNATIONAL INC. | $304.0K | 100,000 | 0.00% | 3q | HELD |
| CANADA PENSION PLAN INVESTMENT BOARD | $265.4K | 87,300 | 0.00% | 3q | +63.8%+$103.4K |
| Grantham, Mayo, Van Otterloo & Co. LLC | $254.9K | 83,837 | 0.00% | 3q | -33.7%-$129.4K |
| Vanguard Global Advisers, LLC | $228.1K | 75,045 | 0.00% | 2q | +75.2%+$97.9K |
| KINGSWOOD WEALTH ADVISORS, LLC | $226.5K | 74,500 | 0.01% | 5q | -2.6%-$6.1K |
| RENAISSANCE TECHNOLOGIES LLC | $217.7K | 71,600 | 0.00% | new | NEW |
| AMERIPRISE FINANCIAL INC | $208.5K | 68,571 | 0.00% | 15q | -52.4%-$229.1K |
| IEQ CAPITAL, LLC | $203.5K | 66,954 | 0.00% | new | NEW |
| PVG ASSET MANAGEMENT CORP | $201.0K | 66,120 | 0.12% | new | NEW |
| HSBC HOLDINGS PLC | $199.5K | 64,460 | 0.00% | 6q | -58.2%-$278.3K |
| Leonteq Securities AG | $194.6K | 64,000 | 0.01% | 3q | -1.5%-$3.0K |
| Police & Firemen's Retirement System of New Jersey | $178.2K | 58,625 | 0.00% | 7q | +65.5%+$70.5K |
| AXQ CAPITAL, LP | $172.7K | 56,810 | 0.02% | 5q | +19.0%+$27.5K |
| ENVESTNET ASSET MANAGEMENT INC | $172.5K | 56,743 | 0.00% | new | NEW |
| NEW YORK STATE COMMON RETIREMENT FUND | $160.4K | 52,747 | 0.00% | 13q | +145.9%+$95.2K |
Showing the largest 100 of 214 reported holders.
Quarter by quarter
Coverage begins with the quarter ending 2018-12-31. Earlier filings exist only as occasional late amendments, too sparse to describe a market, so they are not shown.
| Quarter | Holders | Value | Shares | New | Added | Trimmed | Options |
|---|---|---|---|---|---|---|---|
| Q2 2026 | 209 | $477.9M | 151,769,012 | 60 | 82 | 32 | 3.5% |
| Q1 2026 | 167 | $226.2M | 69,067,388 | 24 | 78 | 32 | 6.0% |
| Q4 2025 | 179 | $228.2M | 55,146,338 | 41 | 68 | 27 | 12.8% |
| Q3 2025 | 153 | $184.9M | 40,997,367 | 19 | 50 | 44 | 16.4% |
| Q2 2025 | 179 | $187.3M | 36,944,344 | 41 | 62 | 40 | 23.7% |
| Q1 2025 | 169 | $211.0M | 37,854,229 | 27 | 47 | 48 | 10.1% |
| Q4 2024 | 171 | $322.1M | 39,934,315 | 27 | 55 | 41 | 10.6% |
| Q3 2024 | 153 | $255.3M | 38,770,974 | 17 | 50 | 39 | 6.7% |
| Q2 2024 | 163 | $294.4M | 41,594,413 | 43 | 43 | 46 | 6.1% |
| Q1 2024 | 161 | $522.1M | 48,457,223 | 54 | 42 | 33 | 5.5% |
| Q4 2023 | 136 | $429.9M | 34,194,756 | 52 | 38 | 20 | 10.5% |
| Q3 2023 | 104 | $79.4M | 29,373,025 | 15 | 22 | 36 | 3.5% |
| Q2 2023 | 111 | $123.8M | 34,252,368 | 27 | 33 | 31 | 2.3% |
| Q1 2023 | 123 | $197.7M | 39,034,494 | 38 | 45 | 26 | 19.1% |
| Q4 2022 | 108 | $675.1M | 40,409,003 | 30 | 29 | 29 | 7.9% |
| Q3 2022 | 125 | $710.4M | 50,169,495 | 46 | 39 | 29 | 9.8% |
| Q2 2022 | 110 | $481.7M | 39,909,274 | 41 | 25 | 31 | 3.1% |
| Q1 2022 | 100 | $212.9M | 33,652,125 | 17 | 33 | 30 | 2.6% |
| Q4 2021 | 101 | $323.5M | 33,702,414 | 15 | 38 | 28 | 5.1% |
| Q3 2021 | 121 | $411.5M | 32,882,397 | 26 | 44 | 31 | 8.8% |
| Q2 2021 | 110 | $286.7M | 27,286,907 | 43 | 28 | 22 | 6.0% |
| Q1 2021 | 98 | $356.5M | 23,820,654 | 27 | 34 | 22 | 5.6% |
| Q4 2020 | 88 | $250.2M | 20,796,509 | 35 | 26 | 16 | 6.2% |
| Q3 2020 | 74 | $299.4M | 21,899,486 | 28 | 18 | 15 | 3.5% |
| Q2 2020 | 62 | $163.2M | 13,360,915 | 39 | 12 | 2 | 12.3% |
| Q1 2020 | 28 | $6.5M | 1,587,389 | 10 | 4 | 7 | 21.7% |
| Q4 2019 | 25 | $2.7M | 1,369,412 | 5 | 8 | 6 | 2.2% |
| Q3 2019 | 27 | $2.3M | 1,115,389 | 10 | 4 | 8 | 4.3% |
| Q2 2019 | 18 | $3.2M | 1,130,619 | 6 | 4 | 2 | 15.4% |
| Q1 2019 | 17 | $4.6M | 1,115,223 | 6 | 4 | 2 | 30.1% |
| Q4 2018 | 20 | $1.9M | 830,945 | 2 | 0 | 1 | 10.5% |