ATI
ATI Inc. · Industrials · Manufacturing - Metal Fabrication
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q3 2026
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q3 2026 | 3 | 0 | 877.66K | $165.60M | n/a | −1 |
| Q2 2026 | 150 | +8 | 101.07M | $19.89B | +13 | −6 |
| Q1 2026 | 146 | 0 | 103.32M | $15.00B | +8 | −9 |
| Q4 2025 | 145 | 0 | 109.79M | $12.60B | +3 | −2 |
| Q3 2025 | 24 | 0 | 59.58M | $4.85B | +2 | −3 |
| Q2 2025 | 22 | -1 | 57.72M | $4.98B | n/a | −1 |
| Q1 2025 | 20 | 0 | 26.30M | $1.37B | n/a | n/a |
| Q4 2024 | 20 | +1 | 23.98M | $1.32B | +1 | n/a |
| Q3 2024 | 18 | 0 | 15.90M | $1.06B | n/a | n/a |
| Q2 2024 | 18 | n/a | 15.27M | $846.69M | n/a | n/a |
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | Assenagon Asset Management S.A. | 837.94K | -36.2% | $158.71M | 0.2% | ▼ Trim | 4 | SEC ↗ |
| 2 | Wealth Enhancement Advisory… | 37.40K | +3.0% | $6.45M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 3 | TD Waterhouse Canada Inc. | 2.32K | -7.6% | $443,929 | 0.0% | ▼ Trim | 4 | SEC ↗ |
“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
| Robeco Institutional Asset… | $1.70M | was 0.0% |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 669 holders, 126.99M shares, $18.05B 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)
No open-market insider purchases in our coverage window.
Open-market sales (S)
Officer · 9.00K sh · $1.73M
Officer · 16.50K sh · $3.19M
Officer · 16.50K sh · $3.42M
Director · 2.48K sh · $501,001
Officer · 16.50K sh · $3.47M
Officer · 16.50K sh · $3.41M
Officer, Director · 1.00K sh · $228,320
Officer, Director · 4.60K sh · $1.07M
Officer, Director · 9.12K sh · $2.11M
Officer, Director · 8.13K sh · $1.88M
Awards, exercises and tax withholding are never counted as buys or sales here. Methodology