ALTIMMUNE INC (ALT) Institutional Ownership Changes & 13F Activity

ALTIMMUNE INC (ALT). Institutional ownership data tracks hedge funds, asset managers, and other institutional investors based on recent SEC Form 13F filings (Q2 2026). This page analyzes institutional buying and selling activity, new holdings, and sold-out positions in the latest reporting period. Notable filers include Deep Track Capital, Lp, Tcg Crossover Management, Llc, Viking Global Investors, Ra Capital Management, L.P., and State Street Corp.

InstitutionTypeChange in sharesChange Position %SharesReported stock balancePortfolio quarterFiling date
Envestnet Asset Management IncBuy+56,743—56,743$172.50KQ2 2026Sep 23, 2026
State Street CorpBuy+4,952,990+69.3%12,098,540$36.78MQ2 2026Sep 22, 2026
Manufacturers Life Insurance Company, TheBuy+17,273+49.7%52,036$158.19KQ2 2026Sep 09, 2026
Parkside Financial Bank & TrustBuy+235—235$713.00Q2 2026Sep 04, 2026
Citadel Advisors LlcBuy+534,686+119.1%983,559$2.99MQ2 2026Sep 02, 2026
Corient Private Wealth LlcBuy+23,673+77.5%54,226$164.85KQ2 2026Aug 27, 2026
California State Teachers Retirement SystemSell-4,387-61.6%2,737$8.32KQ2 2026Aug 24, 2026
Nantahala Capital Management, LlcBuy+1,500,000—1,500,000$4.56MQ2 2026Aug 19, 2026
Mercer Global Advisors IncBuy+53,115—53,115$161.47KQ2 2026Aug 19, 2026
Deep Track Capital, LpBuy+19,250,000—19,250,000$58.52MQ2 2026Aug 14, 2026
Tcg Crossover Management, LlcBuy+10,000,000—10,000,000$30.40MQ2 2026Aug 14, 2026
Viking Global InvestorsBuy+6,700,000—6,700,000$20.37MQ2 2026Aug 14, 2026
Ra Capital Management, L.P.Buy+6,500,000—6,500,000$19.76MQ2 2026Aug 14, 2026
Woodline Partners LpBuy+3,400,312—3,400,312$10.34MQ2 2026Aug 14, 2026
Trails Edge Capital Partners, LpBuy+2,660,000—2,660,000$8.09MQ2 2026Aug 14, 2026
Great Point Partners LlcBuy+1,741,232—1,741,232$5.29MQ2 2026Aug 14, 2026
Weiss Asset Management LpBuy+1,530,803—1,530,803$4.65MQ2 2026Aug 14, 2026
Cormorant Asset Management, LpBuy+1,250,000—1,250,000$3.80MQ2 2026Aug 14, 2026
Aqr Capital Management LlcBuy+1,135,495+1328.8%1,220,949$3.71MQ2 2026Aug 14, 2026
Goldman Sachs Group IncBuy+863,801+64.0%2,214,450$6.73MQ2 2026Aug 14, 2026
Ghisallo Capital Management LlcBuy+750,000—750,000$2.28MQ2 2026Aug 14, 2026
Susquehanna International Group, LlpSell-594,878-44.9%731,078$2.22MQ2 2026Aug 14, 2026
D. E. Shaw & Co., Inc.Sell-525,363-72.3%201,638$612.98KQ2 2026Aug 14, 2026
Rock Springs Capital Management LpBuy+471,465—471,465$1.43MQ2 2026Aug 14, 2026
Invesco Ltd.Buy+332,592—332,592$1.01MQ2 2026Aug 14, 2026
Lmr Partners LlpBuy+300,000—300,000$912.00KQ2 2026Aug 14, 2026
Charles Schwab Investment Management IncBuy+272,818+77.6%624,499$1.90MQ2 2026Aug 14, 2026
Bank Of America CorpBuy+187,716+32.9%757,919$2.30MQ2 2026Aug 14, 2026
Squarepoint Ops LlcBuy+184,254+1016.5%202,380$615.24KQ2 2026Aug 14, 2026
Point72 Asset Management, L.P.Sell-178,405-26.8%486,884$1.48MQ2 2026Aug 14, 2026
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Frequently asked questions about ALT activity

  • Which institutional owners are buying ALT?

    Institutional owners buying ALT include investors who have either initiated new positions or increased their existing holdings based on recent SEC 13F filings. The activity table above highlights which funds added shares in the latest reporting periods and how their positions changed over time.

  • What does "buy" mean in ALT activity?

    "Buy" means an investor increased their reported position in ALT compared to the prior reporting period. This reflects growing exposure to ALTIMMUNE INC (ALT) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).

  • Is institutional interest in ALT increasing?

    Institutional interest in ALT can be assessed by comparing the number of tracked funds adding or increasing positions versus those trimming or exiting across the periods shown. A higher number of additions typically signals increasing participation among large filers, but it should be read alongside position sizes and the full table.