ATARA BIOTHERAPEUTICS INC ATRA
$11.65
+2.5% 52w: $4.18 – $18.09
Latest 13F among current holders filed 4 days ago (Jul 1, 2026)
Price — last 12 months
research preview data4.1811.1318.09
Jun 20, 2025 Jul 2, 2026
Institutional holders
33
-8 QoQ
13F value
$12.1M
-67.3% QoQ
Smart-money holders
2
signal tier ≥ 2
New smart buyers
0
Q1 2026
Options barometer
calls only
$946 calls / — puts
Institutional value by quarter
Number of holders
Who owns ATRA?
Q1 2026 filings| Fund | Type | Shares | Value | % of fund | Change |
|---|---|---|---|---|---|
| ADAGE CAPITAL PARTNERS GP, L.L.C. | Other | 700.0K | $3.3M | 0.0% | New |
| Redmile Group, LLC ★3 | Fundamental concentrated | 441.7K | $2.1M | 0.1% | Held |
| MACKENZIE FINANCIAL CORP | Diversified mechanical | 313.6K | $1.5M | 0.0% | +434.6% |
| VANGUARD CAPITAL MANAGEMENT LLC | Diversified mechanical | 217.9K | $1.0M | 0.0% | — |
| Point72 Asset Management, L.P. | Multistrat pod | 194.3K | $919K | 0.0% | +961.8% |
| ACADIAN ASSET MANAGEMENT LLC | Quant stat arb | 130.9K | $617K | 0.0% | +142.2% |
| EcoR1 Capital, LLC ★2 | Fundamental concentrated | 99.6K | $471K | 0.0% | -82.6% |
| BlackRock, Inc. | Index provider | 79.0K | $374K | 0.0% | +17.8% |
| GEODE CAPITAL MANAGEMENT, LLC | Index provider | 66.1K | $313K | 0.0% | +6.0% |
| UBS Group AG | Bank broker | 50.1K | $237K | 0.0% | +3484.1% |
| STALEY CAPITAL ADVISERS INC | Other | 50.0K | $237K | 0.0% | Held |
| MILLENNIUM MANAGEMENT LLC | Multistrat pod | 47.7K | $226K | 0.0% | New |
| JANE STREET GROUP, LLC | Market maker | 33.9K | $160K | 0.0% | +142.1% |
| VANGUARD FIDUCIARY TRUST CO | Diversified mechanical | 33.6K | $159K | 0.0% | — |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | Diversified mechanical | 32.7K | $155K | 0.0% | Held |
| STATE STREET CORP | Index provider | 26.5K | $125K | 0.0% | Held |
| FMR LLC | Long only active | 16.2K | $77K | 0.0% | -5.4% |
| NORTHERN TRUST CORP | Index provider | 12.3K | $58K | 0.0% | Held |
| MORGAN STANLEY | Bank broker | 9.2K | $43K | 0.0% | -42.7% |
| ROYAL BANK OF CANADA | Bank broker | 4.3K | $20K | 0.0% | +408.1% |
| SBI Securities Co., Ltd. | Diversified mechanical | 1.6K | $7K | 0.0% | +12.1% |
| Vanguard Global Advisers, LLC | Diversified mechanical | 1.5K | $7K | 0.0% | — |
| JONES FINANCIAL COMPANIES LLLP | Wealth advisor | 703 | $3K | 0.0% | Held |
| WELLS FARGO & COMPANY/MN | Bank broker | 251 | $1K | 0.0% | Held |
| JPMORGAN CHASE & CO | Bank broker | 216 | $933 | 0.0% | Held |
| Banque Transatlantique SA | Other | 176 | $906 | 0.0% | Held |
| RHUMBLINE ADVISERS | Diversified mechanical | 175 | $827 | 0.0% | Held |
| BNP PARIBAS FINANCIAL MARKETS | Bank broker | 58 | $274 | 0.0% | +26.1% |
| PlanVest Financial, Inc | Wealth advisor | 28 | $132 | 0.0% | — |
| KERR FINANCIAL PLANNING Corp | Other | 24 | $116 | 0.0% | Held |
| OSAIC HOLDINGS, INC. | Wealth advisor | 10 | $47 | 0.0% | Held |
| Rockefeller Capital Management L.P. | Diversified mechanical | 8 | $38 | 0.0% | Held |
| CITIGROUP INC | Bank broker | 1 | $5 | 0.0% | New |
Exits are not a bearish signal: our backtest shows stocks specialists exit keep outperforming for 3+ quarters — selling usually means profit-taking, not a forecast.
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