ATI
ATI Inc. · Industrials · Manufacturing - Metal Fabrication
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q2 2024
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q2 2026 | 152 | +8 | 101.48M | $19.96B | +13 | −4 |
| 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 | — | −1 |
| Q1 2025 | 20 | 0 | 26.30M | $1.37B | — | — |
| Q4 2024 | 20 | +1 | 23.98M | $1.32B | +1 | — |
| Q3 2024 | 18 | 0 | 15.90M | $1.06B | — | — |
| Q2 2024 | 18 | — | 15.27M | $846.69M | — | — |
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | Capital World Investors ✦ | 2.87M | — | $159.08M | 0.0% | n/c | 1 | SEC ↗ |
| 2 | Geode Capital Management ✦ (passive) | 1.95M | — | $108.03M | 0.0% | n/c | 1 | SEC ↗ |
| 3 | Geode Capital Management ✦ (passive) | 1.95M | — | $108.03M | 0.0% | n/c | 1 | SEC ↗ |
| 4 | Millennium Management ✦ | 1.94M | — | $107.85M | 0.1% | n/c | 1 | SEC ↗ |
| 5 | Norges Bank ✦ (passive) | 1.56M | — | $86.25M | 0.0% | n/c | 1 | SEC ↗ |
| 6 | T. Rowe Price ✦ | 1.22M | — | $67.47M | 0.0% | n/c | 1 | SEC ↗ |
| 7 | T. Rowe Price ✦ | 1.22M | — | $67.47M | 0.0% | n/c | 1 | SEC ↗ |
| 8 | D. E. Shaw & Co. ✦ | 1.12M | — | $61.86M | 0.1% | n/c | 1 | SEC ↗ |
| 9 | D. E. Shaw & Co. ✦ | 1.12M | — | $61.86M | 0.1% | n/c | 1 | SEC ↗ |
| 10 | D. E. Shaw & Co. ✦ | 1.12M | — | $61.86M | 0.1% | n/c | 1 | SEC ↗ |
| 11 | Two Sigma Investments ✦ | 1.07M | — | $59.29M | 0.1% | n/c | 1 | SEC ↗ |
| 12 | Citadel Advisors ✦ | 837.93K | — | $46.46M | 0.0% | n/c | 1 | SEC ↗ |
| 13 | Citadel Advisors ✦ | 837.93K | — | $46.46M | 0.0% | n/c | 1 | SEC ↗ |
| 14 | Fisher Asset Management ✦ | 786.74K | — | $43.62M | 0.0% | n/c | 1 | SEC ↗ |
| 15 | Point72 Asset Management ✦ | 519.88K | — | $28.83M | 0.1% | n/c | 1 | SEC ↗ |
| 16 | Wellington Management ✦ | 498.84K | — | $27.66M | 0.0% | n/c | 1 | SEC ↗ |
| 17 | Wellington Management ✦ | 498.84K | — | $27.66M | 0.0% | n/c | 1 | SEC ↗ |
| 18 | Wellington Management ✦ | 498.84K | — | $27.66M | 0.0% | n/c | 1 | SEC ↗ |
| 19 | GAMCO Investors ✦ | 416.24K | — | $23.08M | 0.3% | n/c | 1 | SEC ↗ |
| 20 | Renaissance Technologies ✦ | 180.19K | — | $9.99M | 0.0% | n/c | 1 | SEC ↗ |
| 21 | Soros Fund Management ✦ | 177.05K | — | $9.82M | 0.3% | n/c | 1 | SEC ↗ |
| 22 | Gotham Asset Management ✦ | 67.08K | — | $3.72M | 0.0% | n/c | 1 | SEC ↗ |
| 23 | Marshall Wace ✦ | 51.41K | — | $2.85M | 0.0% | n/c | 1 | SEC ↗ |
| 24 | AQR Capital Management ✦ | 12.68K | — | $703,106 | 0.0% | n/c | 1 | SEC ↗ |
| 25 | AQR Capital Management ✦ | 12.68K | — | $703,106 | 0.0% | n/c | 1 | SEC ↗ |
| 26 | ARK Investment Management ✦ | 2.37K | — | $131,250 | 0.0% | n/c | 1 | 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
| No tracked exits this quarter. |
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, Director · 1.00K sh · $228,320
Officer, Director · 2.00K sh · $459,120
Officer, Director · 8.13K sh · $1.88M
Officer, Director · 9.12K sh · $2.11M
Officer, Director · 4.60K sh · $1.07M
Awards, exercises and tax withholding are never counted as buys or sales here. Methodology