The highest closing price for Allegheny Technologies (ATI) last month was $231.78, on August 17. It was up 10.5% for the month. The latest price is $185.48.
| DATE | OPEN | HIGH | LOW | CLOSE | VOLUME |
|---|---|---|---|---|---|
August 31 2026 | $210.01 | $210.89 | $202.02 | $204.20 | 9,994,100 |
August 28 2026 | $214.42 | $215.94 | $209.52 | $210.76 | 1,119,600 |
August 27 2026 | $214.29 | $217.47 | $211.44 | $214.52 | 1,206,500 |
August 26 2026 | $217.00 | $217.84 | $211.66 | $212.86 | 1,278,100 |
August 25 2026 | $213.95 | $216.66 | $209.68 | $215.23 | 1,976,841 |
August 24 2026 | $206.92 | $210.91 | $202.25 | $209.81 | 1,720,729 |
August 21 2026 | $210.92 | $212.95 | $206.30 | $207.01 | 1,516,900 |
August 20 2026 | $213.98 | $216.36 | $207.39 | $209.22 | 1,251,100 |
August 19 2026 | $226.21 | $226.45 | $215.09 | $215.99 | 1,235,900 |
August 18 2026 | $227.75 | $230.62 | $224.35 | $226.46 | 1,251,600 |
August 17 2026 | $230.36 | $232.86 | $228.02 | $231.78 | 1,063,000 |
August 14 2026 | $226.59 | $229.34 | $224.00 | $228.48 | 1,225,800 |
August 13 2026 | $231.40 | $233.92 | $225.70 | $227.22 | 1,217,200 |
August 12 2026 | $238.59 | $243.57 | $229.63 | $230.43 | 1,331,100 |
August 11 2026 | $228.33 | $232.38 | $226.00 | $230.08 | 1,468,600 |
August 10 2026 | $231.26 | $239.23 | $227.01 | $228.19 | 1,375,100 |
August 07 2026 | $223.25 | $230.45 | $221.83 | $227.84 | 1,835,300 |
August 06 2026 | $219.99 | $236.98 | $219.99 | $223.43 | 3,138,000 |
August 05 2026 | $204.15 | $208.71 | $202.69 | $205.11 | 3,012,100 |
August 04 2026 | $198.02 | $201.39 | $194.78 | $200.15 | 1,461,400 |
August 03 2026 | $184.88 | $193.54 | $183.54 | $193.12 | 975,200 |
Daily pricing data for Allegheny Technologies dates back to 5/8/1987, and may be incomplete.