
ATO · NYSE
| Date | Open | High | Low | Close | Change | Volume |
|---|---|---|---|---|---|---|
| Oct 23, 2026 | $173.76 | $174.41 | $172.09 | $172.21 | -0.98% | 1.25M |
| Oct 22, 2026 | $167.86 | $174.12 | $167.83 | $173.91 | +4.17% | 1.29M |
| Oct 21, 2026 | $167.93 | $168.13 | $166.67 | $166.95 | -0.11% | 884.38K |
| Oct 20, 2026 | $166.29 | $167.90 | $164.94 | $167.13 | +1.45% | 662.73K |
| Oct 19, 2026 | $166.88 | $166.93 | $164.22 | $164.74 | -1.55% | 1.03M |
| Oct 16, 2026 | $164.88 | $167.81 | $164.49 | $167.34 | +2.07% | 955.92K |
| Oct 15, 2026 | $166.06 | $166.06 | $163.44 | $163.95 | +0.01% | 887.14K |
| Oct 14, 2026 | $163.41 | $165.00 | $161.97 | $163.94 | +0.29% | 871.31K |
| Oct 13, 2026 | $163.31 | $164.27 | $160.69 | $163.47 | +0.67% | 803.60K |
| Oct 12, 2026 | $161.66 | $163.21 | $161.37 | $162.38 | +0.45% | 1.44M |
| Oct 9, 2026 | $159.99 | $161.92 | $159.99 | $161.66 | +0.62% | 877.67K |
| Oct 8, 2026 | $159.53 | $160.83 | $158.37 | $160.66 | +0.91% | 2.14M |
| Oct 7, 2026 | $160.01 | $160.40 | $158.59 | $159.21 | -0.33% | 1.53M |
| Oct 6, 2026 | $158.91 | $159.95 | $157.84 | $159.74 | +1.07% | 1.05M |
| Oct 5, 2026 | $157.31 | $158.48 | $156.09 | $158.05 | +0.56% | 857.45K |
| Oct 2, 2026 | $157.07 | $158.62 | $156.59 | $157.17 | +0.51% | 843.84K |
| Oct 1, 2026 | $156.01 | $156.86 | $154.72 | $156.38 | -0.04% | 1.09M |
| Sep 30, 2026 | $158.13 | $158.16 | $156.25 | $156.44 | -0.74% | 965.51K |
| Sep 29, 2026 | $156.08 | $157.99 | $155.64 | $157.60 | +0.35% | 921.47K |
| Sep 28, 2026 | $157.55 | $157.80 | $156.34 | $157.05 | -0.10% | 1.04M |
| Sep 25, 2026 | $156.11 | $157.50 | $155.39 | $157.21 | +0.51% | 1.04M |
| Sep 24, 2026 | $156.94 | $157.70 | $156.01 | $156.42 | +0.12% | 1.22M |
| Sep 23, 2026 | $156.53 | $157.32 | $155.00 | $156.24 | -0.70% | 1.07M |
| Sep 22, 2026 | $158.02 | $158.88 | $157.26 | $157.34 | -0.59% | 999.14K |
| Sep 21, 2026 | $160.26 | $160.41 | $158.15 | $158.27 | -1.27% | 1.06M |
| Sep 18, 2026 | $161.00 | $161.12 | $159.98 | $160.30 | -1.07% | 2.08M |
| Sep 17, 2026 | $162.42 | $162.96 | $161.43 | $162.03 | +0.04% | 1.42M |
| Sep 16, 2026 | $163.20 | $163.98 | $161.53 | $161.96 | -0.05% | 1.18M |
| Sep 15, 2026 | $163.81 | $164.25 | $161.99 | $162.04 | -1.10% | 1.11M |
| Sep 14, 2026 | $164.16 | $165.08 | $163.14 | $163.84 | +0.40% | 987.55K |
| Sep 11, 2026 | $165.72 | $165.87 | $163.04 | $163.19 | -0.98% | 970.69K |
| Sep 10, 2026 | $167.56 | $168.06 | $164.67 | $164.81 | -1.07% | 902.99K |
| Sep 9, 2026 | $168.22 | $168.30 | $165.89 | $166.59 | -0.88% | 667.01K |
| Sep 8, 2026 | $167.19 | $169.06 | $167.19 | $168.07 | +0.30% | 773.73K |
| Sep 4, 2026 | $168.40 | $169.58 | $167.28 | $167.56 | -0.92% | 694.13K |
| Sep 3, 2026 | $168.30 | $169.44 | $167.42 | $169.12 | +0.86% | 688.59K |
| Sep 2, 2026 | $167.66 | $168.36 | $165.98 | $167.68 | -0.01% | 874.85K |
| Sep 1, 2026 | $167.13 | $167.75 | $166.17 | $167.70 | +0.95% | 785.04K |
| Aug 31, 2026 | $165.50 | $166.76 | $164.62 | $166.13 | -0.31% | 1.15M |
| Aug 28, 2026 | $168.35 | $168.35 | $166.38 | $166.65 | -0.34% | 516.72K |
| Aug 27, 2026 | $168.07 | $168.07 | $166.41 | $167.22 | -1.32% | 825.26K |
| Aug 26, 2026 | $167.74 | $169.63 | $166.50 | $169.46 | +1.13% | 739.21K |
| Aug 25, 2026 | $167.94 | $168.43 | $167.10 | $167.56 | -0.15% | 971.42K |
| Aug 24, 2026 | $166.35 | $167.97 | $166.03 | $167.82 | +0.58% | 795.70K |
| Aug 21, 2026 | $172.12 | $172.12 | $166.85 | $166.85 | -2.15% | 1.07M |
| Aug 20, 2026 | $170.75 | $173.13 | $170.37 | $170.52 | -0.46% | 1.13M |
| Aug 19, 2026 | $171.40 | $172.17 | $170.39 | $171.31 | +0.47% | 916.25K |
| Aug 18, 2026 | $172.07 | $172.73 | $170.32 | $170.51 | +0.36% | 825.85K |
| Aug 17, 2026 | $170.47 | $171.52 | $168.90 | $169.90 | -0.01% | 1.55M |
| Aug 14, 2026 | $169.50 | $170.28 | $169.12 | $169.92 | -0.02% | 1.29M |
| Aug 13, 2026 | $170.30 | $172.09 | $169.40 | $169.96 | +0.22% | 1.32M |
| Aug 12, 2026 | $169.06 | $170.36 | $168.13 | $169.59 | +0.22% | 1.27M |
| Aug 11, 2026 | $167.79 | $169.48 | $167.24 | $169.21 | +0.77% | 909.56K |
| Aug 10, 2026 | $172.27 | $172.27 | $167.15 | $167.92 | -1.33% | 898.90K |
| Aug 7, 2026 | $170.96 | $172.30 | $169.70 | $170.19 | -1.04% | 907.52K |
| Aug 6, 2026 | $173.35 | $173.60 | $170.87 | $171.98 | -0.13% | 1.13M |
| Aug 5, 2026 | $172.18 | $172.58 | $170.46 | $172.20 | -0.26% | 1.28M |
| Aug 4, 2026 | $172.60 | $173.71 | $170.00 | $172.65 | -0.14% | 1.35M |
| Aug 3, 2026 | $171.96 | $174.22 | $171.53 | $172.89 | +0.06% | 812.41K |
| Jul 31, 2026 | $173.30 | $174.92 | $172.22 | $172.78 | — | 1.05M |