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Altimmune (ALT) Institutional Ownership

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$2.31 -0.13 (-5.14%)
Closing price 03:59 PM Eastern
Extended Trading
$2.31 +0.00 (+0.22%)
As of 04:04 PM Eastern
Extended trading is trading that happens on electronic markets outside of regular trading hours. This is a fair market value extended hours price provided by Massive. Learn more.
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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)
91
Total
Institutional Inflows
(last 12 months)
$50.89M
Number of
Institutional Sellers
(last 12 months)
24
Total
Institutional Outflows
(last 12 months)
$7.86M
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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
10/14/2026B. Riley Wealth Advisors Inc.12,585$36K0.0%N/A0.006%
9/9/2026Sequoia Financial Advisors LLC32,285$98K0.0%N/A0.017%
9/9/2026WINTON GROUP Ltd16,100$49K0.0%N/A0.008%
9/9/2026Engineers Gate Manager LP38,037$116K0.0%-67.2%0.020%
9/9/2026Squarepoint Ops LLC202,380$615K0.0%+1,016.5%0.104%
8/27/2026Corient Private Wealth LP54,226$165K0.0%+77.5%0.028%
8/22/2026Syon Capital LLC17,118$52K0.0%N/A0.009%
8/21/2026AXQ Capital LP56,810$173K0.0%+19.0%0.029%
8/19/2026Wellington Management Group LLP420,300$1.28M0.0%+69.4%0.216%
8/6/2026Bank of New York Mellon Corp689,713$2.10M0.0%N/A0.355%
7/9/2026Hennion & Walsh Asset Management Inc.518,198$1.58M0.0%+156.5%0.266%
6/16/2026PVG Asset Management Corp66,120$204K0.1%N/A0.034%
5/19/2026Bank of America Corp DE570,203$1.76M0.0%+48.6%0.438%
5/18/2026EverSource Wealth Advisors LLC35,650$110K0.0%+101.6%0.027%
5/16/2026The Manufacturers Life Insurance Company34,763$107K0.0%+26.0%0.027%
5/16/2026Quantinno Capital Management LP10,636$33K0.0%N/A0.008%
5/13/2026Cetera Investment Advisers35,453$109K0.0%+19.4%0.027%
5/7/2026Dimensional Fund Advisors LP1,045,926$3.22M0.0%+268.7%0.804%
5/5/2026Bank of New York Mellon Corp413,503$1.27M0.0%+16.7%0.318%
5/1/2026Beirne Wealth Consulting Services LLC411,858$1.27M0.4%+9.4%0.317%
4/30/2026Hsbc Holdings PLC154,365$476K0.0%+16.7%0.119%
4/27/2026PFG Investments LLC13,500$42K0.0%N/A0.010%
4/27/2026Leonteq Securities AG65,000$200K0.0%+6,400.0%0.050%
4/23/2026North Star Investment Management Corp.17,000$52K0.0%+112.5%0.013%
4/22/2026Janney Montgomery Scott LLC172,610$532K0.0%+68.2%0.133%
4/21/2026Wealth Effects LLC131,950$406K0.1%+18.1%0.101%
4/16/2026SG 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%
2/18/2026Vines Capital Management LLC17,884$65K0.1%N/A0.016%
2/18/2026Virtus 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%
2/18/2026Quadrature 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%
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2/17/2026Schonfeld Strategic Advisors LLC13,021$47K0.0%N/A0.012%
2/17/2026AQR Capital Management LLC21,147$76K0.0%N/A0.019%
2/17/2026Cetera 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%
2/17/2026Kovack 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%
2/17/2026Advisory 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%
2/17/2026Blair William & Co. IL56,434$204K0.0%N/A0.050%
2/16/2026Squarepoint Ops LLC34,949$126K0.0%-94.0%0.031%
2/16/2026Arax 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%
2/13/2026Stifel 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%
2/13/2026State Street Corp5,119,703$18.48M0.0%+42.2%4.538%
2/13/2026Vontobel Holding Ltd.15,000$54K0.0%N/A0.013%
2/13/2026Martingale Asset Management L P14,355$52K0.0%N/A0.013%
2/13/2026Caitong 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%
2/12/2026Commonwealth Equity Services LLC181,483$655K0.0%+4.2%0.161%
2/12/2026Dimensional 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%
2/12/2026Alps Advisors Inc.85,677$309K0.0%N/A0.076%
2/12/2026Kovack Advisors Inc.35,215$127K0.0%N/A0.031%
2/12/2026Nuveen LLC1,244,211$4.49M0.0%+514.9%1.103%
2/11/2026Janney Montgomery Scott LLC102,610$370K0.0%+75.2%0.091%
2/11/2026Deutsche Bank AG79,940$289K0.0%+4.0%0.071%
2/11/2026Fox Run Management L.L.C.30,603$110K0.0%N/A0.027%
2/11/2026LPL 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%
2/10/2026AXQ Capital LP25,701$93K0.0%+25.8%0.023%
2/10/2026Intech Investment Management LLC52,557$190K0.0%+36.0%0.047%
2/9/2026Geode Capital Management LLC2,292,410$8.28M0.0%+13.6%2.032%
2/6/2026Keudell Morrison Wealth Management18,500$67K0.0%N/A0.016%
2/6/2026Brown Wealth Management LLC258,673$934K0.2%+10.7%0.229%
2/6/2026ProShare Advisors LLC20,816$75K0.0%+21.9%0.018%
2/3/2026SBI Securities Co. Ltd.8,837$32K0.0%+27.9%0.008%
2/2/2026PKS Advisory Services LLC15,100$55K0.0%N/A0.013%
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1/29/2026Beirne Wealth Consulting Services LLC376,458$1.36M0.4%-8.3%0.361%
1/29/2026Concurrent Investment Advisors LLC26,508$96K0.0%+10.4%0.025%
1/28/2026Kingswood Wealth Advisors LLC36,000$130K0.0%+133.8%0.035%
1/27/2026Summit Financial Wealth Advisors LLC103,288$373K0.1%+7.3%0.099%
1/26/2026Wealth Effects LLC111,750$403K0.1%+86.7%0.107%
1/14/2026Hennion & Walsh Asset Management Inc.214,632$775K0.0%+15.7%0.206%
1/9/2026SG Americas Securities LLC10,575$38K0.0%-41.4%0.010%
1/1/2026JPMorgan Chase & Co.99,191$374K0.0%-17.7%0.095%
11/18/2025Advisory Services Network LLC8,960$34K0.0%-44.3%0.009%
11/17/2025Sherbrooke Park Advisers LLC15,904$60K0.0%N/A0.015%


ALT Institutional Ownership - Frequently Asked Questions

During the previous two years, 156 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 142 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 14,342,159 shares in the last 24 months. This purchase volume represents approximately $50.89M in transactions.

Of the 24 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: 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), Millennium Management LLC ($160.20K), and Intech Investment Management LLC ($106.25K).

Institutional investors have sold a total of 2,145,254 shares in the last 24 months. This volume of shares sold represents approximately $7.86M in transactions.


Related Companies

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 10/14/2026. New 13F filings are added each quarter as they're published.
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