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Altimmune (ALT) Institutional Ownership

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$2.90 +0.02 (+0.52%)
As of 01:36 PM Eastern
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Institutional Ownership Changes (13F Filings) for Altimmune (NASDAQ:ALT)

Current
Institutional Ownership
Percentage
78.05%
Number of
Institutional Buyers
(last 12 months)
93
Total
Institutional Inflows
(last 12 months)
$51.73M
Number of
Institutional Sellers
(last 12 months)
26
Total
Institutional Outflows
(last 12 months)
$13.06M
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ALT Institutional Buying and Selling by Quarter

Altimmune Major Shareholders & Ownership History

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Reporting DateMajor Shareholder NameShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails
8/6/2026 Bank of New York Mellon Corp689,713$2.10M0.0%N/A0.355%
7/9/2026 Hennion & Walsh Asset Management Inc.518,198$1.58M0.0%+156.5%0.266%
6/16/2026 PVG Asset Management Corp66,120$204K0.1%N/A0.034%
5/19/2026Bank of America Corp DE570,203$1.76M0.0%+48.6%0.438%
5/18/2026 EverSource Wealth Advisors LLC35,650$110K0.0%+101.6%0.027%
5/16/2026The Manufacturers Life Insurance Company 34,763$107K0.0%+26.0%0.027%
5/16/2026Quantinno Capital Management LP10,636$33K0.0%N/A0.008%
5/13/2026 Cetera Investment Advisers35,453$109K0.0%+19.4%0.027%
5/7/2026 Dimensional Fund Advisors LP1,045,926$3.22M0.0%+268.7%0.804%
5/5/2026 Bank of New York Mellon Corp413,503$1.27M0.0%+16.7%0.318%
5/1/2026 Beirne Wealth Consulting Services LLC411,858$1.27M0.4%+9.4%0.317%
4/30/2026Hsbc Holdings PLC154,365$476K0.0%+16.7%0.119%
4/27/2026 PFG Investments LLC13,500$42K0.0%N/A0.010%
4/27/2026 Leonteq Securities AG65,000$200K0.0%+6,400.0%0.050%
4/23/2026 North Star Investment Management Corp.17,000$52K0.0%+112.5%0.013%
4/22/2026 Janney Montgomery Scott LLC172,610$532K0.0%+68.2%0.133%
4/21/2026 Wealth Effects LLC131,950$406K0.1%+18.1%0.101%
4/16/2026 SG Americas Securities LLC55,625$171K0.0%+426.0%0.043%
3/20/2026Hsbc Holdings PLC132,221$474K0.0%+80.8%0.102%
3/17/2026Rockefeller Capital Management L.P.43,167$156K0.0%+79,838.9%0.033%
2/23/2026Virtu Financial LLC58,477$211K0.0%+21.7%0.052%
2/19/2026Invesco Ltd.214,824$776K0.0%+32.7%0.190%
2/18/2026 Vines Capital Management LLC17,884$65K0.1%N/A0.016%
2/18/2026 Virtus Investment Advisers LLC50,482$182K0.0%+217.2%0.045%
2/18/2026Wellington Management Group LLP257,271$929K0.0%-2.8%0.228%
2/18/2026Susquehanna Portfolio Strategies LLC135,170$488K0.0%-27.0%0.120%
2/18/2026 Quadrature Capital Ltd10,101$36K0.0%N/A0.009%
2/18/2026Millennium Management LLC207,383$749K0.0%-43.6%0.184%
2/18/2026Man Group plc18,936$68K0.0%N/A0.017%
2/18/2026Engineers Gate Manager LP87,264$315K0.0%+112.6%0.077%
2/18/2026Balyasny Asset Management L.P.60,109$217K0.0%N/A0.053%
2/17/2026Schonfeld Strategic Advisors LLC13,021$47K0.0%N/A0.012%
2/17/2026AQR Capital Management LLC21,147$76K0.0%N/A0.019%
2/17/2026 Cetera Investment Advisers29,687$107K0.0%+46.9%0.026%
2/17/2026Northeast Financial Group Inc.13,393$48K0.0%N/A0.012%
2/17/2026EFG International AG16,500$60K0.0%N/A0.015%
2/17/2026 Kovack Advisors Inc.35,215$127K0.0%N/A0.031%
2/17/2026Jump Financial LLC242,017$874K0.0%+109.0%0.214%
2/17/2026Price T Rowe Associates Inc. MD49,879$181K0.0%+20.2%0.044%
2/17/2026Soviero Asset Management LP400,000$1.44M0.7%N/A0.355%
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2/17/2026 Advisory Services Network LLC15,160$55K0.0%+69.2%0.013%
2/17/2026&PARTNERS15,035$54K0.0%N/A0.013%
2/17/2026ExodusPoint Capital Management LP11,921$43K0.0%-93.3%0.011%
2/17/2026Royal Bank of Canada27,414$99K0.0%-58.9%0.024%
2/17/2026 Blair William & Co. IL56,434$204K0.0%N/A0.050%
2/16/2026Squarepoint Ops LLC34,949$126K0.0%-94.0%0.031%
2/16/2026 Arax Advisory Partners8,165$29K0.0%+99.7%0.007%
2/16/2026Barclays PLC400,595$1.45M0.0%+17.7%0.355%
2/13/2026CreativeOne Wealth LLC10,500$38K0.0%N/A0.009%
2/13/2026Marshall Wace LLP922,777$3.33M0.0%N/A0.818%
2/13/2026 Stifel Financial Corp123,416$446K0.0%+104.3%0.109%
2/13/2026Schroder Investment Management Group469,013$1.69M0.0%N/A0.416%
2/13/2026Rafferty Asset Management LLC195,766$707K0.0%+25.3%0.174%
2/13/2026Charles Schwab Investment Management Inc.283,669$1.02M0.0%+38.7%0.251%
2/13/2026 State Street Corp5,119,703$18.48M0.0%+42.2%4.538%
2/13/2026 Vontobel Holding Ltd.15,000$54K0.0%N/A0.013%
2/13/2026Martingale Asset Management L P14,355$52K0.0%N/A0.013%
2/13/2026 Caitong International Asset Management Co. Ltd12,322$44K0.1%N/A0.011%
2/13/2026Wells Fargo & Company MN141,282$510K0.0%+52.1%0.125%
2/12/2026DRW Securities LLC22,469$81K0.0%N/A0.020%
2/12/2026MetLife Investment Management LLC38,193$138K0.0%-14.2%0.034%
2/12/2026 Commonwealth Equity Services LLC181,483$655K0.0%+4.2%0.161%
2/12/2026 Dimensional Fund Advisors LP283,703$1.02M0.0%-4.7%0.251%
2/12/2026Steward Partners Investment Advisory LLC245,393$886K0.0%+11.9%0.217%
2/12/2026 Alps Advisors Inc.85,677$309K0.0%N/A0.076%
2/12/2026 Kovack Advisors Inc.35,215$127K0.0%N/A0.031%
2/12/2026 Nuveen LLC1,244,211$4.49M0.0%+514.9%1.103%
2/11/2026 Janney Montgomery Scott LLC102,610$370K0.0%+75.2%0.091%
2/11/2026 Deutsche Bank AG79,940$289K0.0%+4.0%0.071%
2/11/2026 Fox Run Management L.L.C.30,603$110K0.0%N/A0.027%
2/11/2026 LPL Financial LLC48,626$176K0.0%-21.0%0.043%
2/11/2026Los Angeles Capital Management LLC128,529$464K0.0%N/A0.114%
2/10/2026Goldman Sachs Group Inc.1,349,293$4.87M0.0%+140.0%1.196%
2/10/2026 AXQ Capital LP25,701$93K0.0%+25.8%0.023%
2/10/2026 Intech Investment Management LLC52,557$190K0.0%+36.0%0.047%
2/9/2026 Geode Capital Management LLC2,292,410$8.28M0.0%+13.6%2.032%
2/6/2026 Keudell Morrison Wealth Management18,500$67K0.0%N/A0.016%
2/6/2026 Brown Wealth Management LLC258,673$934K0.2%+10.7%0.229%
2/6/2026 ProShare Advisors LLC20,816$75K0.0%+21.9%0.018%
2/3/2026 SBI Securities Co. Ltd.8,837$32K0.0%+27.9%0.008%
2/2/2026 PKS Advisory Services LLC15,100$55K0.0%N/A0.013%
1/29/2026 Beirne Wealth Consulting Services LLC376,458$1.36M0.4%-8.3%0.361%
1/29/2026 Concurrent Investment Advisors LLC26,508$96K0.0%+10.4%0.025%
1/28/2026 Kingswood Wealth Advisors LLC36,000$130K0.0%+133.8%0.035%
1/27/2026 Summit Financial Wealth Advisors LLC103,288$373K0.1%+7.3%0.099%
1/26/2026 Wealth Effects LLC111,750$403K0.1%+86.7%0.107%
1/14/2026 Hennion & Walsh Asset Management Inc.214,632$775K0.0%+15.7%0.206%
1/9/2026 SG Americas Securities LLC10,575$38K0.0%-41.4%0.010%
1/1/2026 JPMorgan Chase & Co.99,191$374K0.0%-17.7%0.095%
11/18/2025 Advisory Services Network LLC8,960$34K0.0%-44.3%0.009%
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11/17/2025Sherbrooke Park Advisers LLC15,904$60K0.0%N/A0.015%
11/17/2025Sig Brokerage LP34,502$130K0.0%N/A0.033%
11/17/2025Millennium Management LLC367,582$1.39M0.0%-7,160.7%0.352%
11/17/2025Brevan Howard Capital Management LP222,942$840K0.0%+67.4%0.214%
11/17/2025Bank of America Corp DE320,440$1.21M0.0%-55.2%0.307%
11/17/2025Ameriprise Financial Inc.74,312$280K0.0%-34.7%0.071%
11/14/2025Creative Planning36,378$137K0.0%-11.6%0.035%
11/14/2025Virtu Financial LLC48,068$181K0.0%-82.0%0.046%
11/14/2025Two Sigma Investments LP1,996,848$7.53M0.0%+356.6%1.914%
11/14/2025Bridgeway Capital Management LLC50,600$191K0.0%N/A0.048%


ALT Institutional Ownership - Frequently Asked Questions

During the previous two years, 154 institutional investors and hedge funds held shares of Altimmune. The most heavily invested institutionals were Vanguard Group Inc. ($24.03M), State Street Corp ($18.48M), Geode Capital Management LLC ($8.28M), Two Sigma Investments LP ($7.53M), Bellevue Group AG ($6.82M), Goldman Sachs Group Inc. ($4.87M), and Northern Trust Corp ($4.80M).Learn more on Altimmune's institutional investors.

78.05% of Altimmune's stock is owned by institutional investors. Learn more on ALT's institutional investor holdings.

Of the 140 institutional investors that purchased Altimmune's stock in the last 24 months, the following investors and hedge funds have bought the highest volume of shares: Two Sigma Investments LP ($1.71M), State Street Corp ($1.52M), Ameriprise Financial Inc. ($1.38M), Nuveen LLC ($1.31M), Vanguard Group Inc. ($1.21M), Marshall Wace LLP ($988.29K), and Federated Hermes Inc. ($915.46K).

Institutional investors have bought a total of 14,457,404 shares in the last 24 months. This purchase volume represents approximately $51.73M in transactions.

Of the 26 institutional investors that sold Altimmune's stock in the last 24 months, the following investors and hedge funds have sold the highest volume of shares: Ameriprise Financial Inc. ($1.37M), Squarepoint Ops LLC ($549.75K), Bank of America Corp DE ($395.58K), Virtu Financial LLC ($219.71K), ExodusPoint Capital Management LP ($166.26K), Dimensional Fund Advisors LP ($163.77K), and Millennium Management LLC ($160.20K).

Institutional investors have sold a total of 3,472,745 shares in the last 24 months. This volume of shares sold represents approximately $13.06M in transactions.


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Institutional ownership data for NASDAQ:ALT is compiled from quarterly 13F filings submitted to the U.S. Securities and Exchange Commission (SEC), with the most recent received on 8/6/2026. New 13F filings are added each quarter as they're published.
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