Atara BiotherapeuticsATRA
13F holders, Q3 2025 (September 30)1holders −1
1new positions
0sold out
$14.33avg. 13F price*
At the end of Q3 2025, 1 institutions reported holding Atara Biotherapeutics Inc. (ATRA) in their 13F filings, down 1 from Q4 2024. 1 opened new positions and 0 sold out. The largest holder was Alexis Investment Partners, LLC ($215).
- Company
- Atara Biotherapeutics Inc.
- CUSIP
- 046513107
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q4 2024 → Q3 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 1 | $215 |
| Exits | 0 | $0 |
All 13F filers, Q4 2024 → Q3 2025: 15 shares bought, net +15 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 1 holders
| Alexis Investment Partners, LLC | 0.00% | New | 15 | $215 |
"% of holder's portfolio" is ATRA's weight in each manager's 13F, not the share of Atara Biotherapeutics Inc. the manager owns.