DaveManuel.com · Institutional Ownership · Who Owns It
ALTIMMUNE INC (ALT)
Institutional ownership reported to the SEC as of Q2 2026, across 32 quarters.
214
Reporting holders
$477.2M
Reported value
77.9%
Of shares outstanding
3.0%
Calls
0.4%
Puts
+39
Holder change
Institutions report 151,560,945 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.
Calls and puts are the parts of reported value carried in derivative lines rather than shares, and they point in opposite directions: a manager holding calls is positioned for the security, one holding puts against it - or hedging shares they already own, which is why index funds carry so many. Most sites add the two together and report one figure, which averages away the only interesting part.
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 incl. $6.5M options CALL+PUT | 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 incl. $2.3M options CALL+PUT | 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 CALL+PUT | 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 |
| Hennion & Walsh Asset Management, Inc. | $1.6M | 518,198 | 0.04% | 9q | +156.5%+$961.3K |
| SIMPLEX TRADING, LLC | $1.6M CALL+PUT | 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 CALL+PUT | 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 |
| Janney Montgomery Scott LLC | $920.0K | 302,610 | 0.00% | 4q | +75.3%+$395.2K |
| 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 CALL+PUT | 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 | +126.7%+$369.4K |
| 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 |
| PRICE T ROWE ASSOCIATES INC /MD/ | $503.0K | 165,390 | 0.00% | 24q | +78.8%+$221.6K |
| Knoll Capital Management, LLC | $486.4K | 160,000 | 0.23% | 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 |
| 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 | -4.7%-$10.3K |
| IEQ CAPITAL, LLC | $203.5K | 66,954 | 0.00% | new | NEW |
| PVG ASSET MANAGEMENT CORP | $201.0K | 66,120 | 0.12% | 2q | HELD |
| 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 |
| Corient Private Wealth LP | $164.8K | 54,226 | 0.00% | 2q | +77.5%+$72.0K |
| MERCER GLOBAL ADVISORS INC /ADV | $161.5K | 53,115 | 0.00% | new | NEW |
Showing the largest 100 of 214 reported holders.
What the company announced
Form 8-K filings from the last 120 days, showing only the items worth a reader's attention. Earnings releases, exhibit attachments and general disclosures are filed constantly and are left out. Filed is when the SEC received it; event is the date the company says the thing happened.
| Filed | Event date | What | Source |
|---|---|---|---|
| 2026-10-27 | 2026-10-23 | Directors or officers departed or appointed | filing |
| 2026-09-29 | 2026-09-24 | Directors or officers departed or appointed | filing |
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 |
|---|---|---|---|---|---|---|---|
| Q3 2026 | 37 | $6.0M | 2,094,442 | 7 | 13 | 8 | 0.0% |
| Q2 2026 | 214 | $477.2M | 151,560,945 | 58 | 85 | 33 | 3.5% |
| Q1 2026 | 175 | $227.2M | 69,370,859 | 26 | 80 | 35 | 6.0% |
| Q4 2025 | 187 | $228.4M | 55,194,314 | 42 | 73 | 28 | 12.7% |
| Q3 2025 | 165 | $190.1M | 41,575,446 | 22 | 54 | 48 | 17.6% |
| Q2 2025 | 191 | $194.7M | 37,670,130 | 43 | 69 | 42 | 25.1% |
| Q1 2025 | 184 | $215.1M | 38,213,722 | 28 | 54 | 53 | 11.0% |
| Q4 2024 | 186 | $331.8M | 40,601,370 | 29 | 62 | 44 | 11.8% |
| Q3 2024 | 169 | $263.9M | 39,644,826 | 22 | 56 | 43 | 7.7% |
| Q2 2024 | 175 | $304.5M | 42,708,759 | 45 | 50 | 47 | 6.7% |
| Q1 2024 | 173 | $531.4M | 48,991,371 | 58 | 48 | 36 | 6.1% |
| Q4 2023 | 145 | $441.2M | 34,650,966 | 55 | 41 | 24 | 11.6% |
| Q3 2023 | 113 | $82.2M | 30,370,573 | 15 | 27 | 40 | 3.7% |
| Q2 2023 | 119 | $127.5M | 35,266,911 | 29 | 38 | 33 | 2.4% |
| Q1 2023 | 139 | $246.9M | 43,445,426 | 40 | 50 | 32 | 16.8% |
| Q4 2022 | 133 | $1.1B | 70,799,432 | 37 | 35 | 38 | 6.1% |
| Q3 2022 | 124 | $5.4B | 419,023,850 | 46 | 38 | 29 | 1.3% |
| Q2 2022 | 108 | $4.8B | 408,904,973 | 41 | 26 | 29 | 0.3% |
| Q1 2022 | 96 | $230.0M | 36,467,809 | 17 | 32 | 28 | 2.4% |
| Q4 2021 | 99 | $426.3M | 44,919,727 | 15 | 37 | 28 | 3.9% |
| Q3 2021 | 119 | $528.8M | 43,252,865 | 26 | 43 | 31 | 6.8% |
| Q2 2021 | 108 | $390.3M | 37,809,138 | 42 | 28 | 21 | 4.4% |
| Q1 2021 | 97 | $366.5M | 24,530,942 | 26 | 34 | 22 | 5.4% |
| Q4 2020 | 88 | $4.5B | 401,165,759 | 35 | 26 | 16 | 0.3% |
| Q3 2020 | 74 | $299.4M | 21,899,486 | 28 | 17 | 16 | 3.5% |
| Q2 2020 | 62 | $271.3M | 23,450,815 | 39 | 12 | 2 | 7.4% |
| Q1 2020 | 28 | $9.7M | 2,586,389 | 10 | 4 | 7 | 14.6% |
| Q4 2019 | 25 | $4.5M | 2,368,412 | 5 | 8 | 6 | 1.3% |
| Q3 2019 | 26 | $4.2M | 2,114,388 | 10 | 4 | 8 | 2.3% |
| Q2 2019 | 17 | $5.6M | 2,129,618 | 6 | 4 | 2 | 8.8% |
| Q1 2019 | 16 | $7.5M | 2,114,222 | 6 | 4 | 2 | 18.5% |
| Q4 2018 | 19 | $2.1M | 930,844 | 2 | 0 | 1 | 9.5% |