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.
13F holders, Q4 2023
Institutional positions in Altimmune, Inc. as of Dec 31, 2023. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 143
- +30 vs. Q3 2023
- Shares held
- 33.5M
- +3.21M (+10.6%) vs. Q3 2023
- Total value
- $377.1M
- +$297.9M (+376.2%) vs. Q3 2023
- New holders
- 56
- 41 more added
- Sold out
- 26
- 24 more reduced
Compare with Q3 2023: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting ALT on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 210 | $456.1M |
| Q1 2026 | 173 | $213.5M |
| Q4 2025 | 183 | $198.8M |
| Q3 2025 | 159 | $156.4M |
| Q2 2025 | 180 | $145.5M |
| Q1 2025 | 177 | $191.2M |
| Q4 2024 | 183 | $292.3M |
| Q3 2024 | 169 | $243.0M |
| Q2 2024 | 173 | $282.1M |
| Q1 2024 | 171 | $452.2M |
| Q4 2023 | 143 | $377.1M |
| Q3 2023 | 113 | $79.2M |
| Q2 2023 | 120 | $124.5M |
| Q1 2023 | 133 | $205.4M |
| Q4 2022 | 128 | $769.9M |
| Q3 2022 | 122 | $588.1M |
| Q2 2022 | 111 | $466.9M |
| Q1 2022 | 103 | $207.4M |
| Q4 2021 | 102 | $295.8M |
| Q3 2021 | 119 | $375.3M |
| Q2 2021 | 109 | $269.2M |
| Q1 2021 | 98 | $336.5M |
Institutions, Q4 2023
Shares, value and share of portfolio for each institution holding Altimmune, Inc.; share changes are against Q3 2023.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Quinn Opportunity Partners LLC | 105,000 | $1.18M | 0.14% | +105,000 | New |
| Pennant Investors, LP | 109,800 | $1.24M | 0.38% | +109,800 | New |
| Gagnon Securities LLC | 111,342 | $1.25M | 0.30% | −180−0.2% | Reduced |
| Squarepoint Ops LLC | 112,773 | $1.27M | 0.01% | +112,773 | New |
| DCF Advisers, LLC | 115,225 | $1.30M | 0.88% | −4,750−4.0% | Reduced |
| IMC-Chicago, LLC | 131,738 | $1.48M | 0.05% | +131,738 | New |
| Schonfeld Strategic Advisors LLC | 135,000 | $1.52M | 0.01% | +135,000 | New |
| Charles Schwab Investment Management Inc | 142,705 | $1.61M | 0.00% | +9,310+7.0% | Added |
| Cubist Systematic Strategies, LLC | 144,985 | $1.63M | 0.02% | +98,832+214.1% | Added |
| Silverarc Capital Management, LLC | 150,000 | $1.69M | 0.52% | +150,000 | New |
| Sectoral Asset Management Inc | 170,800 | $1.92M | 0.83% | +170,800 | New |
| Millennium Management LLC | 174,141 | $1.96M | 0.00% | +76,908+79.1% | Added |
| Bank of New York Mellon Corp | 191,588 | $2.16M | 0.00% | +12,681+7.1% | Added |
| Knoll Capital Management, LLC | 200,000 | $2.25M | 1.86% | +200,000 | New |
| Susquehanna Portfolio Strategies, LLC | 207,197 | $2.33M | 0.04% | +207,197 | New |
| Gsa Capital Partners LLP | 209,462 | $2.36M | 0.20% | −236,406−53.0% | Reduced |
| Jefferies Financial Group Inc. | 216,000 | $2.43M | 0.04% | +216,000 | New |
| Gerber, LLC | 255,778 | $2.88M | 2.60% | +255,778 | New |
| Dimensional Fund Advisors LP | 261,518 | $2.94M | 0.00% | +72,267+38.2% | Added |
| D. E. Shaw & Co., Inc. | 289,726 | $3.26M | 0.00% | −441,006−60.4% | Reduced |
| Beirne Wealth Consulting Services, LLC | 303,800 | $3.42M | 1.69% | +54,380+21.8% | Added |
| Kennedy Capital Management, Inc. | 304,650 | $3.43M | 0.07% | +304,650 | New |
| Fred Alger Management, LLC | 326,658 | $3.67M | 0.02% | +326,658 | New |
| Ensign Peak Advisors, Inc | 326,777 | $3.68M | 0.01% | 00.0% | Unchanged |
| Ardsley Advisory Partners LP | 341,000 | $3.82M | 0.82% | −651,050−65.6% | Reduced |
| Lighthouse Investment Partners, LLC | 399,357 | $4.49M | 0.33% | +399,357 | New |
| Jacobs Levy Equity Management, Inc | 432,341 | $4.86M | 0.02% | +432,341 | New |
| Northern Trust Corp | 473,829 | $5.33M | 0.00% | +23,419+5.2% | Added |
| Goldman Sachs Group Inc | 524,250 | $5.90M | 0.00% | +401,767+328.0% | Added |
| Group One Trading, L.P. | 547,441 | $6.16M | 0.19% | +380,791+228.5% | Added |
| Jane Street Group, LLC | 580,444 | $6.53M | 0.01% | +521,495+884.7% | Added |
| Susquehanna International Group, LLP | 733,254 | $8.25M | 0.01% | +619,488+544.5% | Added |
| Invesco Ltd. | 746,181 | $8.39M | 0.00% | +713,152+2,159.2% | Added |
| Timelo Investment Management Inc. | 809,095 | $9.10M | 19.49% | +779,095+2,597.0% | Added |
| State Street Corp | 1,014,546 | $11.4M | 0.00% | +143,665+16.5% | Added |
| Morgan Stanley | 1,040,901 | $11.7M | 0.00% | +556,843+115.0% | Added |
| Geode Capital Management, LLC | 1,193,528 | $13.4M | 0.00% | +140,192+13.3% | Added |
| Point72 Asset Management, L.P. | 1,246,500 | $14.0M | 0.04% | +1,246,500 | New |
| Nuveen Asset Management, LLC | 1,727,316 | $19.4M | 0.01% | −1,719,462−49.9% | Reduced |
| Tang Capital Management LLC | 2,750,000 | $30.9M | 2.86% | 00.0% | Unchanged |
| Vanguard Group Inc | 3,571,972 | $40.2M | 0.00% | +227,677+6.8% | Added |
| BlackRock Inc. | 4,044,707 | $45.5M | 0.00% | +257,791+6.8% | Added |
| Ameriprise Financial Inc | 4,183,682 | $47.1M | 0.01% | +4,172,791+38,314.1% | Added |
| Avidity Partners Management LP | 0 | $0 | 0.00% | −1,159,900−100.0% | Sold out |
| Balyasny Asset Management LLC | 0 | $0 | 0.00% | −947,578−100.0% | Sold out |
| Two Sigma Advisers, LP | 0 | $0 | 0.00% | −937,000−100.0% | Sold out |
| Laurion Capital Management LP | 0 | $0 | 0.00% | −809,685−100.0% | Sold out |
| Two Sigma Investments, LP | 0 | $0 | 0.00% | −667,420−100.0% | Sold out |
| Prudential Financial Inc | 0 | $0 | 0.00% | −333,255−100.0% | Sold out |
| Renaissance Technologies LLC | 0 | $0 | 0.00% | −330,900−100.0% | Sold out |
| Nomura Holdings Inc | 0 | $0 | 0.00% | −273,100−100.0% | Sold out |
| Dark Forest Capital Management LP | 0 | $0 | 0.00% | −230,353−100.0% | Sold out |
| XTX Topco Ltd | 0 | $0 | 0.00% | −204,998−100.0% | Sold out |
| Qube Research & Technologies Ltd | 0 | $0 | 0.00% | −178,697−100.0% | Sold out |
| Citadel Advisors LLC | 0 | $0 | 0.00% | −119,404−100.0% | Sold out |
| OrbiMed Advisors LLC | 0 | $0 | 0.00% | −100,000−100.0% | Sold out |
| Platinum Investment Management Ltd | 0 | $0 | 0.00% | −95,081−100.0% | Sold out |
| Graham Capital Management, L.P. | 0 | $0 | 0.00% | −94,105−100.0% | Sold out |
| Man Group plc | 0 | $0 | 0.00% | – | Sold out |
| Alps Advisors Inc | 0 | $0 | 0.00% | −38,878−100.0% | Sold out |
| Connor, Clark & Lunn Investment Management Ltd. | 0 | $0 | 0.00% | −34,052−100.0% | Sold out |
| Dynamic Technology Lab Private Ltd | 0 | $0 | 0.00% | −30,260−100.0% | Sold out |
| Mirae Asset Global Investments Co., Ltd. | 0 | $0 | 0.00% | −28,352−100.0% | Sold out |
| Engineers Gate Manager LP | 0 | $0 | 0.00% | −23,355−100.0% | Sold out |
| Quantbot Technologies LP | 0 | $0 | 0.00% | −15,300−100.0% | Sold out |
| Prelude Capital Management, LLC | 0 | $0 | 0.00% | −12,600−100.0% | Sold out |
| Corton Capital Inc. | 0 | $0 | 0.00% | −10,202−100.0% | Sold out |
| China Universal Asset Management Co., Ltd. | 0 | $0 | 0.00% | −1,354−100.0% | Sold out |
| Daiwa Securities Group Inc. | 0 | $0 | 0.00% | −136−100.0% | Sold out |