ALT in the 13F filings
Altimmune Inc · CUSIP 02155H200
- Quarter end
- 31 Mar 2026
- the date the book describes
- Filed
- 15 May 2026
- latest of these filings; the earliest 12 May 2026
- Managers listing it
- 20
- at least, of 95 tracked, among listed positions
- Comparable managers
- 91
- filed both Q4 2025 and Q1 2026; 1 listed it in both
- Shares listed
- 14,631,723
- combined, among listed positions
- Reported value
- $45m
- combined, at the quarter end
AllianceBernstein LP. Values in this filing are at the previous quarter end's prices; its share count is the quarter end's.
Among the 91 comparable managers: 10 buyers (opened or added shares) and 12 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was +4,770,892.
Managers listing ALT in Q1 2026
20 of 20 holders
Largest increases and reductions, by shares
Increases
- Marshall Wace LLPexisting position · 4,017,901 shares now+3,095,124
- Millennium Management LLCexisting position · 3,258,191 shares now+3,050,808
- Two Sigma Investments LPexisting position · 2,478,900 shares now+1,213,217
- Point72 Asset Management LPnew position · 665,289 shares now+665,289
- Man Group PLCexisting position · 129,846 shares now+110,910
Reductions
- Citadel Advisors LLCexisting position · 448,873 shares now-889,054
- D. E. Shaw & Co.existing position · 727,001 shares now-616,582
- Walleye Capital LLCexisting position · 2 shares now-65,663
- Susquehanna International Group LLPexisting position · 1,325,956 shares now-43,061
- Brevan Howard Capital Management LPexisting position · 78,403 shares now-35,725
New positions and exits
New (1)
Exited (4)
- Jane Street Group LLCwas $6.4m
- Verition Fund Management LLCwas $251k
- Balyasny Asset Management LLCwas $217k
- Schonfeld Strategic Advisors LLCwas $47k
Ownership over time
Tracked managers listing it, at least.
| Quarter | Holders | Reported value | Buyers | Sellers |
|---|---|---|---|---|
| Q2 2020 | 1 | $8.4m | n.a. | n.a. |
| Q3 2020 | 1 | $952k | n.a. | n.a. |
| Q2 2021 | 1 | $15m | n.a. | n.a. |
| Q3 2021 | 1 | $3.9m | n.a. | n.a. |
| Q4 2021 | 2 | $6.8m | n.a. | n.a. |
| Q1 2022 | 2 | $5.9m | n.a. | n.a. |
| Q2 2022 | 2 | $8.0m | n.a. | n.a. |
| Q3 2022 | 4 | $89m | n.a. | n.a. |
| Q4 2022 | 5 | $133m | n.a. | n.a. |
| Q4 2023 | 1 | $382k | 1 | 0 |
| Q1 2024 | 2 | $7.0m | 2 | 0 |
| Q2 2024 | 1 | $184k | 0 | 1 |
| Q3 2024 | 1 | $169k | 0 | 0 |
| Q4 2024 | 1 | $199k | 0 | 0 |
| Q1 2025 | 1 | $138k | 0 | 0 |
| Q2 2025 | 1 | $107k | 0 | 0 |
| Q3 2025 | 1 | $104k | 0 | 0 |
| Q4 2025 | 1 | $100k | 14 | 9 |
| Q1 2026 | 1 | $85k | 10 | 12 |
| Q2 2026 | 1 | $20m | 20 | 7 |
Compare with…
Holders over time, buyers and sellers, and the managers holding both, side by side for up to four stocks.
ALT and LLY →ALT and JNJ →ALT and VRTX →Choose a stock to compare with ALT →
How much of the picture this is
A 13F is a manager’s long US-listed equity book at a quarter end, filed up to 45 days later. It shows no shorts, cash, bonds or performance, and it is never today’s portfolio. Large books are listed to their largest positions, so a manager missing from this table may still hold a small position below that line. These are 95 tracked managers, not the institutional market.
Which funds own ALT, latest filings →Back to the 13F Explorer →