Ownership — ATRA
US Institutional Ownership28.5%
| Institution | Shares | Value | Ownership % | Change | Filing Date |
|---|
| 700.0K | $3.0M | 8.22% | -- | 2026-03-31 |
| 441.7K | $2.0M | 5.19% | -- | 2026-03-31 |
| 313.6K | $1.0M | 3.68% | +255.0K | 2026-03-31 |
| 217.9K | $1.0M | 2.56% | -- | 2026-03-31 |
| 194.3K | -- | 2.28% | +176.0K | 2026-03-31 |
| 99.6K | -- | 1.17% | -473.6K | 2026-03-31 |
| 79.0K | -- | 0.93% | +11.9K | 2026-03-31 |
| 66.1K | -- | 0.78% | +3.8K | 2026-03-31 |
| 50.1K | -- | 0.59% | +48.7K | 2026-03-31 |
| 50.0K | -- | 0.59% | -- | 2026-03-31 |
| 47.7K | -- | 0.56% | -- | 2026-03-31 |
| 33.9K | -- | 0.40% | +19.9K | 2026-03-31 |
| 33.6K | -- | 0.39% | -- | 2026-03-31 |
| 32.7K | -- | 0.38% | -- | 2026-03-31 |
| 26.5K | -- | 0.31% | -- | 2026-03-31 |
| 16.2K | -- | 0.19% | -918 | 2026-03-31 |
| 12.3K | -- | 0.14% | -- | 2026-03-31 |
| 9.2K | -- | 0.11% | -6.8K | 2026-03-31 |
| 1.6K | -- | 0.02% | +170 | 2026-03-31 |
| 1.5K | -- | 0.02% | -- | 2026-03-31 |
| 703 | -- | 0.01% | -- | 2026-03-31 |
| 251 | -- | 0.00% | -- | 2026-03-31 |
| 200 | -- | 0.00% | -- | 2026-03-31 |
| 176 | -- | 0.00% | -- | 2026-03-31 |
| 175 | -- | 0.00% | -- | 2026-03-31 |
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