Security record · archived quarter
ATI
ATI Inc. · Industrials · Manufacturing - Metal Fabrication
146Tracked holders
0Δ holders
103.32MShares held
$15.00BReported value
+8New positions
−9Exits
Momentum inputs (comparable managers): holder breadth 0.0% · share flow +1.3% · net new positions -0.7% — formula
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q1 2026
Ownership over time
| 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 | — | — |
Who holds it · Q1 2026
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | BlackRock ✦ (passive) | 16.44M | +12.1% | $2.39B | 0.0% | ▲ Add | 4 | SEC ↗ |
| 2 | BlackRock ✦ (passive) | 16.44M | +12.1% | $2.39B | 0.0% | ▲ Add | 4 | SEC ↗ |
| 3 | BlackRock ✦ (passive) | 16.44M | +12.1% | $2.39B | 0.0% | ▲ Add | 4 | SEC ↗ |
| 4 | BlackRock ✦ (passive) | 16.44M | +12.1% | $2.39B | 0.0% | ▲ Add | 4 | SEC ↗ |
| 5 | BlackRock ✦ (passive) | 16.44M | +12.1% | $2.39B | 0.0% | ▲ Add | 4 | SEC ↗ |
| 6 | BlackRock ✦ (passive) | 16.44M | +12.1% | $2.39B | 0.0% | ▲ Add | 4 | SEC ↗ |
| 7 | BlackRock ✦ (passive) | 16.44M | +12.1% | $2.39B | 0.0% | ▲ Add | 4 | SEC ↗ |
| 8 | BlackRock ✦ (passive) | 16.44M | +12.1% | $2.39B | 0.0% | ▲ Add | 4 | SEC ↗ |
| 9 | BlackRock ✦ (passive) | 16.44M | +12.1% | $2.39B | 0.0% | ▲ Add | 4 | SEC ↗ |
| 10 | BlackRock ✦ (passive) | 16.44M | +12.1% | $2.39B | 0.0% | ▲ Add | 4 | SEC ↗ |
| 11 | BlackRock ✦ (passive) | 16.44M | +12.1% | $2.39B | 0.0% | ▲ Add | 4 | SEC ↗ |
| 12 | BlackRock ✦ (passive) | 16.44M | +12.1% | $2.39B | 0.0% | ▲ Add | 4 | SEC ↗ |
| 13 | BlackRock ✦ (passive) | 16.44M | +12.1% | $2.39B | 0.0% | ▲ Add | 4 | SEC ↗ |
| 14 | BlackRock ✦ (passive) | 16.44M | +12.1% | $2.39B | 0.0% | ▲ Add | 4 | SEC ↗ |
| 15 | BlackRock ✦ (passive) | 16.44M | +12.1% | $2.39B | 0.0% | ▲ Add | 4 | SEC ↗ |
| 16 | BlackRock ✦ (passive) | 16.44M | +12.1% | $2.39B | 0.0% | ▲ Add | 4 | SEC ↗ |
| 17 | BlackRock ✦ (passive) | 16.44M | +12.1% | $2.39B | 0.0% | ▲ Add | 4 | SEC ↗ |
| 18 | BlackRock ✦ (passive) | 16.44M | +12.1% | $2.39B | 0.0% | ▲ Add | 4 | SEC ↗ |
| 19 | Capital Research Global Investors | 6.16M | +70.6% | $895.96M | 0.1% | ▲ Add | 2 | SEC ↗ |
| 20 | Vanguard Capital Management Llc | 6.12M | — | $890.82M | 0.0% | n/c | 1 | SEC ↗ |
| 21 | Capital International Investors | 5.88M | -65.6% | $854.87M | 0.2% | ▼ Trim | 2 | SEC ↗ |
| 22 | Capital World Investors ✦ | 5.71M | -22.3% | $831.00M | 0.1% | ▼ Trim | 8 | SEC ↗ |
| 23 | State Street Global Advisors ✦ (passive) | 5.38M | -3.9% | $782.72M | 0.0% | ▼ Trim | 6 | SEC ↗ |
| 24 | Fidelity (FMR) ✦ | 5.25M | +3.4% | $763.25M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 25 | Fidelity (FMR) ✦ | 5.25M | +3.4% | $763.25M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 26 | Fidelity (FMR) ✦ | 5.25M | +3.4% | $763.25M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 27 | Fidelity (FMR) ✦ | 5.25M | +3.4% | $763.25M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 28 | Fidelity (FMR) ✦ | 5.25M | +3.4% | $763.25M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 29 | Fidelity (FMR) ✦ | 5.25M | +3.4% | $763.25M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 30 | Invesco Ltd. | 3.86M | +13.9% | $560.84M | 0.1% | ▲ Add | 2 | SEC ↗ |
| 31 | Invesco Ltd. | 3.86M | +13.9% | $560.84M | 0.1% | ▲ Add | 2 | SEC ↗ |
| 32 | Invesco Ltd. | 3.86M | +13.9% | $560.84M | 0.1% | ▲ Add | 2 | SEC ↗ |
| 33 | Invesco Ltd. | 3.86M | +13.9% | $560.84M | 0.1% | ▲ Add | 2 | SEC ↗ |
| 34 | Invesco Ltd. | 3.86M | +13.9% | $560.84M | 0.1% | ▲ Add | 2 | SEC ↗ |
| 35 | Invesco Ltd. | 3.86M | +13.9% | $560.84M | 0.1% | ▲ Add | 2 | SEC ↗ |
| 36 | Invesco Ltd. | 3.86M | +13.9% | $560.84M | 0.1% | ▲ Add | 2 | SEC ↗ |
| 37 | Invesco Ltd. | 3.86M | +13.9% | $560.84M | 0.1% | ▲ Add | 2 | SEC ↗ |
| 38 | Invesco Ltd. | 3.86M | +13.9% | $560.84M | 0.1% | ▲ Add | 2 | SEC ↗ |
| 39 | Invesco Ltd. | 3.86M | +13.9% | $560.84M | 0.1% | ▲ Add | 2 | SEC ↗ |
| 40 | Invesco Ltd. | 3.86M | +13.9% | $560.84M | 0.1% | ▲ Add | 2 | SEC ↗ |
| 41 | Invesco Ltd. | 3.86M | +13.9% | $560.84M | 0.1% | ▲ Add | 2 | SEC ↗ |
| 42 | Invesco Ltd. | 3.86M | +13.9% | $560.84M | 0.1% | ▲ Add | 2 | SEC ↗ |
| 43 | Viking Global Investors ✦ | 3.33M | New | $484.80M | 1.4% | New | 1 | SEC ↗ |
| 44 | Geode Capital Management ✦ (passive) | 2.95M | +21.8% | $428.81M | 0.0% | ▲ Add | 8 | SEC ↗ |
| 45 | Geode Capital Management ✦ (passive) | 2.95M | +21.8% | $428.81M | 0.0% | ▲ Add | 8 | SEC ↗ |
| 46 | Point72 Asset Management ✦ | 1.93M | +154.2% | $281.11M | 0.5% | ▲ Add | 8 | SEC ↗ |
| 47 | D. E. Shaw & Co. ✦ | 1.74M | -13.8% | $253.48M | 0.2% | ▼ Trim | 8 | SEC ↗ |
| 48 | D. E. Shaw & Co. ✦ | 1.74M | -13.8% | $253.48M | 0.2% | ▼ Trim | 8 | SEC ↗ |
| 49 | Morgan Stanley ✦ | 1.67M | +30.0% | $242.71M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 50 | Morgan Stanley ✦ | 1.67M | +30.0% | $242.71M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 51 | Morgan Stanley ✦ | 1.67M | +30.0% | $242.71M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 52 | Morgan Stanley ✦ | 1.67M | +30.0% | $242.71M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 53 | Morgan Stanley ✦ | 1.67M | +30.0% | $242.71M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 54 | Morgan Stanley ✦ | 1.67M | +30.0% | $242.71M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 55 | Morgan Stanley ✦ | 1.67M | +30.0% | $242.71M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 56 | Morgan Stanley ✦ | 1.67M | +30.0% | $242.71M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 57 | Morgan Stanley ✦ | 1.67M | +30.0% | $242.71M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 58 | Morgan Stanley ✦ | 1.67M | +30.0% | $242.71M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 59 | Morgan Stanley ✦ | 1.67M | +30.0% | $242.71M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 60 | Morgan Stanley ✦ | 1.67M | +30.0% | $242.71M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 61 | Morgan Stanley ✦ | 1.67M | +30.0% | $242.71M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 62 | Morgan Stanley ✦ | 1.67M | +30.0% | $242.71M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 63 | Morgan Stanley ✦ | 1.67M | +30.0% | $242.71M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 64 | Morgan Stanley ✦ | 1.67M | +30.0% | $242.71M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 65 | Morgan Stanley ✦ | 1.67M | +30.0% | $242.71M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 66 | Charles Schwab Investment… | 1.50M | +1.0% | $218.50M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 67 | Jane Street Group, Llc | 1.49M | +438.0% | $216.92M | 0.2% | ▲ Add | 2 | SEC ↗ |
| 68 | Jane Street Group, Llc | 1.49M | +438.0% | $216.92M | 0.2% | ▲ Add | 2 | SEC ↗ |
| 69 | Jane Street Group, Llc | 1.49M | +438.0% | $216.92M | 0.2% | ▲ Add | 2 | SEC ↗ |
| 70 | UBS Group AG | 1.42M | +18.9% | $206.42M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 71 | UBS Group AG | 1.42M | +18.9% | $206.42M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 72 | UBS Group AG | 1.42M | +18.9% | $206.42M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 73 | Dimensional Fund Advisors Lp | 1.37M | -35.7% | $198.72M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 74 | Dimensional Fund Advisors Lp | 1.37M | -35.7% | $198.72M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 75 | Dimensional Fund Advisors Lp | 1.37M | -35.7% | $198.72M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 76 | Dimensional Fund Advisors Lp | 1.37M | -35.7% | $198.72M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 77 | Dimensional Fund Advisors Lp | 1.37M | -35.7% | $198.72M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 78 | Bank Of America Corp /De/ | 1.36M | +70.8% | $198.54M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 79 | Bank Of America Corp /De/ | 1.36M | +70.8% | $198.54M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 80 | Bank Of America Corp /De/ | 1.36M | +70.8% | $198.54M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 81 | Bank Of America Corp /De/ | 1.36M | +70.8% | $198.54M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 82 | Bank Of America Corp /De/ | 1.36M | +70.8% | $198.54M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 83 | Bank Of America Corp /De/ | 1.36M | +70.8% | $198.54M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 84 | Northern Trust Corp | 1.24M | +5.5% | $180.23M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 85 | Northern Trust Corp | 1.24M | +5.5% | $180.23M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 86 | Northern Trust Corp | 1.24M | +5.5% | $180.23M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 87 | Northern Trust Corp | 1.24M | +5.5% | $180.23M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 88 | Northern Trust Corp | 1.24M | +5.5% | $180.23M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 89 | Northern Trust Corp | 1.24M | +5.5% | $180.23M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 90 | Arrowstreet Capital ✦ | 1.20M | +231.4% | $175.09M | 0.1% | ▲ Add | 2 | SEC ↗ |
| 91 | AQR Capital Management ✦ | 1.22M | +19.9% | $174.13M | 0.1% | ▲ Add | 8 | SEC ↗ |
| 92 | AQR Capital Management ✦ | 1.22M | +19.9% | $174.13M | 0.1% | ▲ Add | 8 | SEC ↗ |
| 93 | AQR Capital Management ✦ | 1.22M | +19.9% | $174.13M | 0.1% | ▲ Add | 8 | SEC ↗ |
| 94 | AQR Capital Management ✦ | 1.22M | +19.9% | $174.13M | 0.1% | ▲ Add | 8 | SEC ↗ |
| 95 | AQR Capital Management ✦ | 1.22M | +19.9% | $174.13M | 0.1% | ▲ Add | 8 | SEC ↗ |
| 96 | AQR Capital Management ✦ | 1.22M | +19.9% | $174.13M | 0.1% | ▲ Add | 8 | SEC ↗ |
| 97 | AQR Capital Management ✦ | 1.22M | +19.9% | $174.13M | 0.1% | ▲ Add | 8 | SEC ↗ |
| 98 | AQR Capital Management ✦ | 1.22M | +19.9% | $174.13M | 0.1% | ▲ Add | 8 | SEC ↗ |
| 99 | Holocene Advisors, LP | 1.10M | +2.4% | $159.66M | 0.4% | ▲ Add | 2 | SEC ↗ |
| 100 | American Century Companies Inc | 1.07M | -32.8% | $155.54M | 0.1% | ▼ Trim | 2 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value — the conviction measure. ✦ = curated manager.
New buyers
| Viking Global Investors | $484.80M | 1.4% |
Exited
| Norges Bank | $198.79M | was 0.0% |
| Connor, Clark & Lunn… | $11.58M | was 0.0% |
| Mackenzie Financial Corp | $2.19M | was 0.0% |
| Toronto Dominion Bank | $2.04M | was 0.0% |
| Simplex Trading, Llc | $1.10M | was 0.0% |
| Walleye Trading LLC | $1.07M | was 0.0% |
| Group One Trading Llc | $418,989 | was 0.0% |
| Cibc World Market Inc. | $230,668 | was 0.0% |
| Kayne Anderson Rudnick… | $1,721 | 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.
Frequently co-owned
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)
Aug 17
Fields Kimberly A
Officer, Director · 1.00K sh · $228,320
Aug 17
Fields Kimberly A
Officer, Director · 2.00K sh · $459,120
Aug 17
Fields Kimberly A
Officer, Director · 8.13K sh · $1.88M
Aug 17
Fields Kimberly A
Officer, Director · 9.12K sh · $2.11M
Aug 17
Fields Kimberly A
Officer, Director · 4.60K sh · $1.07M
Awards, exercises and tax withholding are never counted as buys or sales here. Methodology
Provenance: Ownership from parsed 13F common-stock positions (tracked universe, comparable sets for changes); insider rows from Forms 3/4/5; stakes from Schedules 13D/13G; every filing links to its original on SEC EDGAR.
Reporting period: Q1 2026 ·
Methodology ·
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