ATRA
name pending profile ingest
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q2 2024
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q2 2026 | 23 | +1 | 2.31M | $26.52M | +2 | −1 |
| Q1 2026 | 22 | -5 | 1.77M | $8.38M | +3 | −8 |
| Q4 2025 | 27 | +2 | 761.24K | $13.76M | +2 | n/a |
| Q3 2025 | 9 | -1 | 547.31K | $7.84M | n/a | −1 |
| Q2 2025 | 8 | +2 | 446.45K | $3.45M | +2 | n/a |
| Q1 2025 | 3 | -3 | 101.37K | $602,201 | n/a | −3 |
| Q4 2024 | 6 | +1 | 449.58K | $5.98M | +1 | n/a |
| Q3 2024 | 4 | -1 | 550.99K | $4.48M | n/a | −1 |
| Q2 2024 | 5 | n/a | 480.97K | $4.09M | n/a | n/a |
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | Citadel Advisors ✦ | 260.48K | n/a | $2.21M | 0.0% | n/c | 1 | SEC ↗ |
| 2 | Millennium Management ✦ | 116.67K | n/a | $991,704 | 0.0% | n/c | 1 | SEC ↗ |
| 3 | Renaissance Technologies ✦ | 46.06K | n/a | $391,544 | 0.0% | n/c | 1 | SEC ↗ |
| 4 | Geode Capital Management ✦ (passive) | 42.68K | n/a | $362,844 | 0.0% | n/c | 1 | SEC ↗ ×2 |
| 5 | AQR Capital Management ✦ | 15.08K | n/a | $128,172 | 0.0% | n/c | 1 | SEC ↗ ×2 |
“Their weight” = the position's share of that manager's reported 13F equity value: the conviction measure. ✦ = curated manager.
New buyers
| No new tracked buyers this quarter. |
Exited
| No tracked exits this quarter. |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 32 holders, 2.56M shares, $11.51M reported. This is a different, older period than the tracked-universe figures above and the two are never mixed.
What else this security's tracked holders most often hold: shared-ownership counts, not fundamental relationships.
Open-market purchases (P)
Director · 104.17K sh @ 9.60 · $999,994
Open-market sales (S)
Officer, Director · 5.06K sh · $40,883
Awards, exercises and tax withholding are never counted as buys or sales here. Methodology
9.9% of class · View original SEC filing ↗