ALT
Altimmune, Inc.
$3.12
+0.01 (+0.32%)
At close · Jul 9
Market Cap
$593.15M
Shares
194,474,154
Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.
The Jun 30, 2026 filing window is
still open — showing the latest known positions. Funds that have not filed yet
carry their prior-quarter positions; a fund that filed without this stock counts
as sold out.
Holders: 174
Total Value: $204,394,228
Total Shares: 66,369,400
Showing 1–100
of 183 holdings by value
· page 1 of 2
Institutional Ownership Trend
26 quarters
Holder Concentration
Across 173 13F filersTop Holder
19.4%
of institutional value
Top 5
49.8%
of institutional value
Top 10
69.5%
of institutional value
HHI
732
Broadly held
| Holder | Value (USD) | % of 13F | Shares | Type | Discretion | Filed | Open | |||
|---|---|---|---|---|---|---|---|---|---|---|
| Mega BlackRock, Inc. | $39,409,448 | 19.28% | 12,795,277 | Shares | Sole | 2026-05-13 | ||||
| Mega STATE STREET CORP | $22,008,294 | 10.77% | 7,145,550 | Shares | Defined | 2026-05-15 | ||||
| Mega VANGUARD CAPITAL MANAGEMENT LLC | $17,426,790 | 8.53% | 5,658,049 | Shares | Defined | 2026-05-15 | ||||
| Large MARSHALL WACE, LLP | $12,375,134 | 6.05% | 4,017,901 | Shares | Other | 2026-05-15 | ||||
| Mega MILLENNIUM MANAGEMENT LLC | $10,035,228 | 4.91% | 3,258,191 | Shares | Sole | 2026-05-15 | ||||
| Mega GEODE CAPITAL MANAGEMENT, LLC | $9,569,855 | 4.68% | 3,107,096 | Shares | Defined | 2026-05-15 | ||||
| Large Alyeska Investment Group, L.P. | $8,145,368 | 3.99% | 2,644,600 | Shares | Sole | 2026-05-15 | ||||
| Mega TWO SIGMA INVESTMENTS, LP | $7,635,012 | 3.74% | 2,478,900 | Shares | Sole | 2026-05-15 | ||||
| Mega Nuveen, LLC | $7,190,569 | 3.52% | 2,334,601 | Shares | Defined | 2026-04-30 | ||||
| Mega GOLDMAN SACHS GROUP INC | $4,159,998 | 2.04% | 1,350,649 | Shares | Defined | 2026-05-15 | ||||
| Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP | $4,083,944 | 2.00% | 1,325,956 | Shares | Other | 2026-05-15 | ||||
| Mega DIMENSIONAL FUND ADVISORS LP | $3,221,450 | 1.58% | 1,045,926 | Shares | Sole | 2026-05-07 | ||||
| Mega NORTHERN TRUST CORP Bank | $3,069,900 | 1.50% | 996,721 | Shares | Defined | 2026-05-14 | ||||
| Mega UBS Group AG | $2,786,684 | 1.36% | 904,768 | Shares | Defined | 2026-05-05 | ||||
| Mega VANGUARD FIDUCIARY TRUST CO Bank | $2,677,499 | 1.31% | 869,318 | Shares | Defined | 2026-05-08 | ||||
| Mega MORGAN STANLEY | $2,387,792 | 1.17% | 775,258 | Shares | Defined | 2026-05-15 | ||||
| Mega D. E. Shaw & Co., Inc. | $2,239,162 | 1.10% | 727,001 | Shares | Defined | 2026-05-15 | ||||
| Mega FMR LLC | $2,075,808 | 1.02% | 673,964 | Shares | Defined | 2026-05-15 | ||||
| Mega SCHRODER INVESTMENT MANAGEMENT GROUP | $2,056,937 | 1.01% | 667,837 | Shares | Sole | 2026-05-14 | ||||
| Mid TANG CAPITAL MANAGEMENT LLC | $2,051,347 | 1.00% | 666,022 | Shares | Other | 2026-05-15 | ||||
| Large Point72 Asset Management, L.P. | $2,049,090 | 1.00% | 665,289 | Shares | Defined | 2026-05-15 | ||||
| Mega BANK OF AMERICA CORP /DE/ Bank | $1,756,224 | 0.86% | 570,203 | Shares | Defined | 2026-05-18 | ||||
| Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP | $1,729,112 | 0.85% | 561,400 | Call | Other | 2026-05-15 | ||||
| Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP | $1,709,400 | 0.84% | 555,000 | Put | Other | 2026-05-15 | ||||
| Mid Hennion & Walsh Asset Management, Inc. | $1,575,321 | 0.77% | 518,198 | Shares | Sole | 2026-07-08 | ||||
| Mega CITADEL ADVISORS LLC | $1,382,528 | 0.68% | 448,873 | Shares | Defined | 2026-05-15 | ||||
| Mega BNP PARIBAS ARBITRAGE, SA | $1,340,040 | 0.66% | 435,078 | Shares | Defined | 2026-05-12 | ||||
| Mega Bank of New York Mellon Corp Bank | $1,273,587 | 0.62% | 413,503 | Shares | Defined | 2026-05-05 | ||||
| Micro Beirne Wealth Consulting Services, LLC | $1,268,522 | 0.62% | 411,858 | Shares | Sole | 2026-04-30 | ||||
| Mega CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $1,083,177 | 0.53% | 351,681 | Shares | Sole | 2026-05-15 | ||||
| Mega CITADEL ADVISORS LLC | $1,040,732 | 0.51% | 337,900 | Call | Defined | 2026-05-15 | ||||
| Mega JANE STREET GROUP, LLC | $937,244 | 0.46% | 304,300 | Call | Defined | 2026-05-12 | ||||
| Large Steward Partners Investment Advisory, LLC | $775,485 | 0.38% | 251,781 | Shares | Sole | 2026-05-08 | ||||
| Mega WELLINGTON MANAGEMENT GROUP LLP | $764,325 | 0.37% | 248,158 | Shares | Defined | 2026-05-15 | ||||
| Mid MANGROVE PARTNERS IM, LLC | $736,982 | 0.36% | 239,280 | Shares | Sole | 2026-05-15 | ||||
| Large Baird Financial Group, Inc. | $731,567 | 0.36% | 237,522 | Shares | Defined | 2026-05-14 | ||||
| Micro BROWN WEALTH MANAGEMENT, LLC | $727,298 | 0.36% | 236,136 | Shares | Sole | 2026-04-09 | ||||
| Large Rafferty Asset Management, LLC | $712,314 | 0.35% | 231,271 | Shares | Sole | 2026-05-15 | ||||
| Mega Invesco Ltd. | $701,799 | 0.34% | 227,857 | Shares | Defined | 2026-05-12 | ||||
| Mega CITADEL ADVISORS LLC | $602,448 | 0.29% | 195,600 | Put | Defined | 2026-05-15 | ||||
| Mega BARCLAYS PLC | $594,041 | 0.29% | 192,871 | Shares | Defined | 2026-05-15 | ||||
| Large Janney Montgomery Scott LLC | $531,638 | 0.26% | 172,610 | Shares | Sole | 2026-04-22 | ||||
| Large COMMONWEALTH EQUITY SERVICES, LLC | $493,951 | 0.24% | 160,374 | Shares | Sole | 2026-04-27 | ||||
| Small Knoll Capital Management, LLC | $492,800 | 0.24% | 160,000 | Shares | Sole | 2026-05-15 | ||||
| Mega RHUMBLINE ADVISERS | $479,466 | 0.23% | 155,671 | Shares | Sole | 2026-05-12 | ||||
| Mega HSBC HOLDINGS PLC | $475,444 | 0.23% | 154,365 | Shares | Defined | 2026-04-30 | ||||
| Large STIFEL FINANCIAL CORP | $414,617 | 0.20% | 134,616 | Shares | Defined | 2026-05-12 | ||||
| Small WEALTH EFFECTS LLC | $406,406 | 0.20% | 131,950 | Shares | Sole | 2026-04-21 | ||||
| Large Man Group plc | $399,925 | 0.20% | 129,846 | Shares | Defined | 2026-05-15 | ||||
| Mega JPMORGAN CHASE & CO | $392,691 | 0.19% | 127,498 | Shares | Defined | 2026-05-13 | ||||
| Large Grantham, Mayo, Van Otterloo & Co. LLC | $389,278 | 0.19% | 126,389 | Shares | Sole | 2026-05-14 | ||||
| Mega DEUTSCHE BANK AG\ Bank | $383,509 | 0.19% | 124,516 | Shares | Defined | 2026-05-06 | ||||
| Mid Engineers Gate Manager LP | $357,624 | 0.17% | 116,112 | Shares | Sole | 2026-05-15 | ||||
| Large Jefferies Financial Group Inc. | $338,800 | 0.17% | 110,000 | Shares | Defined | 2026-05-08 | ||||
| Large ALPS ADVISORS INC | $326,113 | 0.16% | 105,881 | Shares | Defined | 2026-05-08 | ||||
| Mega LPL Financial LLC | $319,568 | 0.16% | 103,756 | Shares | Sole | 2026-05-06 | ||||
| Large SILVERCREST ASSET MANAGEMENT GROUP LLC | $318,780 | 0.16% | 103,500 | Shares | Sole | 2026-05-15 | ||||
| Small Summit Financial Wealth Advisors, LLC | $318,127 | 0.16% | 103,288 | Shares | Sole | 2026-05-26 | ||||
| Mid PROFUND ADVISORS LLC | $317,674 | 0.16% | 103,141 | Shares | Sole | 2026-04-27 | ||||
| Large NOMURA ASSET MANAGEMENT INTERNATIONAL INC. | $308,000 | 0.15% | 100,000 | Shares | Defined | 2026-05-15 | ||||
| Mega WELLS FARGO & COMPANY/MN | $295,392 | 0.14% | 95,907 | Shares | Defined | 2026-05-11 | ||||
| Mega PRICE T ROWE ASSOCIATES INC /MD/ | $284,936 | 0.14% | 92,512 | Shares | Defined | 2026-05-15 | ||||
| Mega AQR CAPITAL MANAGEMENT LLC | $263,196 | 0.13% | 85,454 | Shares | Other | 2026-05-15 | ||||
| Mid Brevan Howard Capital Management LP | $241,481 | 0.12% | 78,403 | Shares | Defined | 2026-05-15 | ||||
| Large MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. Mutual Fund | $238,059 | 0.12% | 77,292 | Shares | Defined | 2026-05-15 | ||||
| Mid KINGSWOOD WEALTH ADVISORS, LLC | $235,620 | 0.12% | 76,500 | Shares | Sole | 2026-04-28 | ||||
| Mega CITIGROUP INC | $235,087 | 0.12% | 76,327 | Shares | Defined | 2026-05-11 | ||||
| Large Caption Management, LLC | $229,269 | 0.11% | 74,438 | Shares | Sole | 2026-05-15 | ||||
| Large MetLife Investment Management, LLC | $222,416 | 0.11% | 72,213 | Shares | Defined | 2026-05-14 | ||||
| Mega AMERIPRISE FINANCIAL INC | $221,661 | 0.11% | 71,968 | Shares | Defined | 2026-05-15 | ||||
| Mega ALLIANCEBERNSTEIN L.P. | $221,020 | 0.11% | 71,760 | Shares | Defined | 2026-05-15 | ||||
| Mid Virtu Financial LLC | $217,263 | 0.11% | 70,540 | Shares | Defined | 2026-05-14 | ||||
| Small PVG ASSET MANAGEMENT CORP | $201,004 | 0.10% | 66,120 | Shares | Sole | 2026-07-01 | ||||
| Mid Leonteq Securities AG Broker-Dealer | $200,200 | 0.10% | 65,000 | Shares | Sole | 2026-04-27 | ||||
| Mega AMERICAN CENTURY COMPANIES INC | $193,759 | 0.09% | 62,909 | Shares | Defined | 2026-05-15 | ||||
| Mega JANE STREET GROUP, LLC | $173,712 | 0.08% | 56,400 | Put | Defined | 2026-05-12 | ||||
| Large SG Americas Securities, LLC Broker-Dealer | $171,325 | 0.08% | 55,625 | Shares | Sole | 2026-04-16 | ||||
| Mega RAYMOND JAMES FINANCIAL INC | $165,690 | 0.08% | 53,796 | Shares | Defined | 2026-05-14 | ||||
| Mega CANADA PENSION PLAN INVESTMENT BOARD Pension | $164,164 | 0.08% | 53,300 | Shares | Sole | 2026-05-15 | ||||
| Small Virtus Investment Advisers, LLC | $159,368 | 0.08% | 51,743 | Shares | Other | 2026-05-14 | ||||
| Large ExodusPoint Capital Management, LP | $149,746 | 0.07% | 48,619 | Shares | Sole | 2026-05-14 | ||||
| Small AXQ CAPITAL, LP | $147,076 | 0.07% | 47,752 | Shares | Sole | 2026-05-13 | ||||
| Large Rockefeller Capital Management L.P. | $142,819 | 0.07% | 46,370 | Shares | Defined | 2026-05-14 | ||||
| Mega Vanguard Global Advisers, LLC | $131,904 | 0.06% | 42,826 | Shares | Defined | 2026-05-08 | ||||
| Large Creative Planning | $120,825 | 0.06% | 39,229 | Shares | Sole | 2026-05-12 | ||||
| Small DCF Advisers, LLC | $113,960 | 0.06% | 37,000 | Call | Sole | 2026-05-11 | ||||
| Mid Kovack Advisors, Inc. | $111,650 | 0.05% | 36,250 | Shares | Sole | 2026-05-13 | ||||
| Mid EverSource Wealth Advisors, LLC | $109,799 | 0.05% | 35,650 | Shares | Sole | 2026-05-18 | ||||
| Large Cetera Investment Advisers | $109,195 | 0.05% | 35,453 | Shares | Sole | 2026-05-13 | ||||
| Large Police & Firemen's Retirement System of New Jersey Pension | $109,133 | 0.05% | 35,433 | Shares | Defined | 2026-04-29 | ||||
| Mega MANUFACTURERS LIFE INSURANCE COMPANY, THE Insurance | $107,070 | 0.05% | 34,763 | Shares | Defined | 2026-05-15 | ||||
| Large MML INVESTORS SERVICES, LLC | $106,414 | 0.05% | 34,550 | Shares | Defined | 2026-05-04 | ||||
| Mid INTECH INVESTMENT MANAGEMENT LLC | $94,743 | 0.05% | 30,761 | Shares | Sole | 2026-05-08 | ||||
| Large Corient Private Wealth LLC | $94,103 | 0.05% | 30,553 | Shares | Sole | 2026-05-15 | ||||
| Mid HUB Investment Partners, LLC | $93,071 | 0.05% | 30,218 | Shares | Sole | 2026-05-15 | ||||
| Mid E Fund Management Co., Ltd. | $89,541 | 0.04% | 29,072 | Shares | Sole | 2026-04-13 | ||||
| Large BLAIR WILLIAM & CO/IL | $86,926 | 0.04% | 28,223 | Shares | Sole | 2026-05-08 | ||||
| Large FARALLON CAPITAL MANAGEMENT LLC | $85,008 | 0.04% | 27,600 | Shares | Other | 2026-05-15 | ||||
| Mid Voleon Capital Management LP | $83,597 | 0.04% | 27,142 | Shares | Sole | 2026-05-15 | ||||
| Mid Concurrent Investment Advisors, LLC | $81,644 | 0.04% | 26,508 | Shares | Sole | 2026-04-21 | ||||
| No holders match your search. | ||||||||||