ATI INC · CUSIP 01741R102 · CIK 351173
As of 2026-06-30, FRONTIER CAPITAL MANAGEMENT CO LLC reported 419.97K ATI (shares), valued at $82.78M, or 0.77% of its reported non-derivative portfolio. Filed 2026-08-14.
Verify history & sources →Shares decreased 39.52%; reported value decreased 18.05%, and weight changed -0.27 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds.
Left: % · Right: Shares · Independently scaled axes
Exact data and methodology
Axes scale independently; a crossing does not mean equal values. Weight uses each quarter's total reported non-derivative value. Same CUSIP; missing quarters are gaps, not zero. Revised history may include later disclosures.
| Quarter | Weight | Quantity | Source |
|---|---|---|---|
| Q2 2026 | 0.77% | 419,968 | SEC filing ↗Filed Aug 14, 2026 |
| Q1 2026 | 1.04% | 694,422 | SEC filing ↗Filed May 15, 2026 |
| Q4 2025 | 1.49% | 1,227,453 | SEC filing ↗Filed Feb 17, 2026 |
| Q3 2025 | 1.13% | 1,554,561 | SEC filing ↗Filed Nov 14, 2025 |
| Q2 2025 | 1.78% | 2,225,724 | SEC filing ↗Filed Aug 14, 2025 |
| Q1 2025 | 1.48% | 2,602,258 | SEC filing ↗Filed May 15, 2025 |
| Q4 2024 | 1.60% | 3,058,551 | SEC filing ↗Filed Feb 14, 2025 |
| Q3 2024 | 1.97% | 3,121,211 | SEC filing ↗Filed Nov 14, 2024 |
| Q2 2024 | 1.72% | 3,132,239 | SEC filing ↗Filed Aug 14, 2024 |
| Q1 2024 | 1.60% | 3,339,331 | SEC filing ↗Filed May 15, 2024 |
| Q4 2023 | 1.67% | 3,645,644 | SEC filing ↗Filed Feb 14, 2024 |
| Q3 2023 | 1.38% | 3,051,000 | SEC filing ↗Filed Nov 14, 2023 |
History & evidence by quarter
| Quarter | Weight | Quantity | Value | Change explained | Source |
|---|---|---|---|---|---|
| Q3 2023 | 1.38% | 3,051,000 | $125.55M | The prior quarter is outside the free window. Sign in for the comparison. | SEC filing ↗ Filed Nov 14, 2023 |
| Q4 2023 | 1.67% | 3,645,644 | $165.77M | Shares increased 19.49%; reported value increased 32.03%, and weight changed +0.29 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds. | SEC filing ↗ Filed Feb 14, 2024 |
| Q1 2024 | 1.60% | 3,339,331 | $170.87M | Shares decreased 8.40%; reported value increased 3.08%, and weight changed -0.07 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds. | SEC filing ↗ Filed May 15, 2024 |
| Q2 2024 | 1.72% | 3,132,239 | $173.68M | Shares decreased 6.20%; reported value increased 1.64%, and weight changed +0.12 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds. | SEC filing ↗ Filed Aug 14, 2024 |
| Q3 2024 | 1.97% | 3,121,211 | $208.84M | Shares decreased 0.35%; reported value increased 20.24%, and weight changed +0.25 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds. | SEC filing ↗ Filed Nov 14, 2024 |
| Q4 2024 | 1.60% | 3,058,551 | $168.34M | Shares decreased 2.01%; reported value decreased 19.39%, and weight changed -0.37 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds. | SEC filing ↗ Filed Feb 14, 2025 |
| Q1 2025 | 1.48% | 2,602,258 | $135.40M | Shares decreased 14.92%; reported value decreased 19.57%, and weight changed -0.12 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds. | SEC filing ↗ Filed May 15, 2025 |
| Q2 2025 | 1.78% | 2,225,724 | $192.17M | Shares decreased 14.47%; reported value increased 41.93%, and weight changed +0.30 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds. | SEC filing ↗ Filed Aug 14, 2025 |
| Q3 2025 | 1.13% | 1,554,561 | $126.45M | Shares decreased 30.15%; reported value decreased 34.20%, and weight changed -0.65 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds. | SEC filing ↗ Filed Nov 14, 2025 |
| Q4 2025 | 1.49% | 1,227,453 | $140.86M | Shares decreased 21.04%; reported value increased 11.40%, and weight changed +0.36 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds. | SEC filing ↗ Filed Feb 17, 2026 |
| Q1 2026 | 1.04% | 694,422 | $101.01M | Shares decreased 43.43%; reported value decreased 28.29%, and weight changed -0.45 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds. | SEC filing ↗ Filed May 15, 2026 |
| Q2 2026 | 0.77% | 419,968 | $82.78M | Shares decreased 39.52%; reported value decreased 18.05%, and weight changed -0.27 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds. | SEC filing ↗ Filed Aug 14, 2026 |
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Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.