ATARA BIOTHERAPEUTICS INC (ATRA): Institutional Ownership
Hedge funds and institutional managers reporting a position in ATRA · Health Care. Based on the most recent 13F filing from each holder, sourced from SEC EDGAR.
Reported Holders
6
13F filers
Aggregate Value
$4.2M
Across holders
Last Price
$10.51
2026-06-26
Sector
Health Care
GICS
Holder activity5 new1 added0 reduced
| Manager⇅ | Type⇅ | Shares⇅ | Market Value▼ | % of Total⇅ | % of Portfolio⇅ | Action⇅ | QoQ Change⇅ | Quarter⇅ |
|---|---|---|---|---|---|---|---|---|
| ADAGE CAPITAL PARTNERS GP, L.L.C. CIK 0001165408 | Hedge Fund | 700K | $3.3M | 79.7% | 0.0% | New | — | Q1 2026 |
| RENAISSANCE TECHNOLOGIES LLC CIK 0001037389 | Hedge Fund | 30K | $543K | 13.1% | 0.0% | Added | +$201K | Q4 2025 |
| Walleye Capital LLC CIK 0001758720 | Hedge Fund | 12K | $220K | 5.3% | 0.0% | New | — | Q4 2025 |
| CITADEL ADVISORS LLC CIK 0001423053 | Hedge Fund | 3K | $62K | 1.5% | 0.0% | New | — | Q4 2025 |
| MARSHALL WACE, LLP CIK 0001318757 | Hedge Fund | 1K | $20K | 0.5% | 0.0% | New | — | Q4 2025 |
| AQR CAPITAL MANAGEMENT LLC CIK 0001167557 | Hedge Fund | 8 | $68 | 0.0% | 0.0% | New | — | Q2 2024 |
New
Hedge Fund
$3.3M· 79.7% of total· 0.0% port· 700K sh· — QoQ· Q1 2026
Added
Hedge Fund
$543K· 13.1% of total· 0.0% port· 30K sh· +$201K QoQ· Q4 2025
New
Hedge Fund
$220K· 5.3% of total· 0.0% port· 12K sh· — QoQ· Q4 2025
New
Hedge Fund
$62K· 1.5% of total· 0.0% port· 3K sh· — QoQ· Q4 2025
New
Hedge Fund
$20K· 0.5% of total· 0.0% port· 1K sh· — QoQ· Q4 2025
New
Hedge Fund
$68· 0.0% of total· 0.0% port· 8 sh· — QoQ· Q2 2024