Altimmune, Inc.
ALT- Exchange
- Nasdaq
- Industry
- Pharmaceutical Preparations
- SEC CIK
- 0001326190
In the last 90 days, Altimmune, Inc. insiders filed 1 open-market purchase and 0 sales; 210 institutions reported holding it in 13F filings for Q2 2026, worth $456.1M in total; Viking Global Investors is the only superinvestor holding it.
Q2 2025 vs. Q1 2025
How the institutions holding Altimmune, Inc. changed between Q1 2025 and Q2 2025.
All holders in Q2 2025All holders in Q1 2025
| Measure | Q1 2025 | Of which not filed for Q2 2025 | Q2 2025 | Change |
|---|---|---|---|---|
| Holders | 177 | 1 | 180 | +4 |
| Shares | 38.2M | 3 | 37.6M | −579.0K (−1.5%) |
| Value | $191.2M | $15 | $145.5M | −$45.7M (−23.9%) |
1 institution that held it in Q1 2025 haven't filed for Q2 2025 yet. Not filing isn't selling, so the changes leave them out.
New holders (38)
Institutions that held Altimmune, Inc. at the end of Q2 2025 but not at the end of Q1 2025.
Sold out (34)
Institutions that held Altimmune, Inc. at the end of Q1 2025 and filed for Q2 2025 without it.
Not filed for Q2 2025 yet (1)
Institutions that held Altimmune, Inc. at the end of Q1 2025 and haven't filed a 13F for Q2 2025. Not filing isn't selling, so they aren't counted as sold out.
| Institution | Shares, Q1 2025 | Value, Q1 2025 |
|---|---|---|
| Lindbrook Capital, LLC | 3 | $15 |