ALT Altimmune, Inc.: institutional ownership and insider trading
224 funds reported holding $503M of Altimmune, Inc. in their latest 13F filings; in Q2 2026 funds net bought $249M, with 58 new positions and 18 funds selling out; over the last 12 months insiders bought $370K and sold $0 on the open market.
ALT revenue and earnings
- Quarter ended Jun 30, 2026: revenue n/a, net income −$22.8M, EPS -0.12
- Quarter ended Mar 31, 2026: revenue n/a, net income −$22.6M, EPS -0.18
- Quarter ended Dec 31, 2025: revenue $26.0K, net income −$27.4M, EPS -0.26
- Quarter ended Sep 30, 2025: revenue $5.00K, net income −$19.0M, EPS -0.21
Famous investors holding ALT
- Andreas Halvorsen (Viking Global Investors): $20.4M, 0.1% of the portfolio
- Two Sigma (Two Sigma Investments): $7.24M, 0.0% of the portfolio
- Izzy Englander (Millennium Management): $10.1M, 0.0% of the portfolio
- Ken Griffin (Citadel Advisors): $5.30M, 0.0% of the portfolio
- D. E. Shaw (D. E. Shaw & Co.): $613K, 0.0% of the portfolio
- Renaissance Technologies (Renaissance Technologies): $218K, 0.0% of the portfolio
Largest institutional holders of ALT
- BlackRock, Inc. (BLK) — $62.0M
- Deep Track Capital, LP — $58.5M
- STATE STREET CORP (STT, STT-PG) — $36.8M
- VANGUARD GROUP INC — $34.3M
- TCG Crossover Management, LLC — $30.4M
- VANGUARD CAPITAL MANAGEMENT LLC — $24.9M
- VANGUARD PORTFOLIO MANAGEMENT LLC — $22.3M
- MARSHALL WACE, LLP — $20.8M
- VIKING GLOBAL INVESTORS LP — $20.4M
- RA CAPITAL MANAGEMENT, L.P. — $19.8M
Recent ALT insider trades
- Aug 13, 2026: Durso Jerome Benedict bought 15,000 shares ($44.3K)
- Apr 6, 2026: Gill John bought 9,200 shares ($31.4K)
- Apr 1, 2026: Weaver Gregory L bought 10,000 shares ($31.5K)
- Apr 1, 2026: Durso Jerome Benedict bought 15,000 shares ($47.1K)
5%+ owners
- Deep Track Capital, LP: 10.0% (Schedule 13G, filed Apr 30, 2026)
- Chen Yu: 9.8% (Schedule 13G, filed May 1, 2026)
- VIKING GLOBAL INVESTORS LP: 6.7% (Schedule 13G, filed May 1, 2026)
- RA Capital Management, L.P.: 6.5% (Schedule 13G, filed May 1, 2026)
- STATE STREET CORPORATION: 5.5% (Schedule 13G, filed May 12, 2026)
Who owns the most ALT stock?
The largest institutional holders of Altimmune, Inc. in the latest 13F filings are BlackRock, Inc. (BLK) ($62.0M), Deep Track Capital, LP ($58.5M), STATE STREET CORP (STT, STT-PG) ($36.8M).
Are insiders buying or selling ALT?
Over the last 12 months insiders bought $370K and sold $0 of Altimmune, Inc. stock on the open market (SEC Form 4).
Which famous investors own ALT?
Andreas Halvorsen, Two Sigma, Izzy Englander, Ken Griffin, D. E. Shaw.
Which ETFs hold ALT?
3 ETFs and mutual funds hold it among their top 100 positions, including SBIO, BBC, DLHAX.