TransAlta Corporation (TAC)
NYSE: TAC · Real-Time Price · USD
12.23
+0.04 (0.37%)
At close: Sep 11, 2026, 4:00 PM EDT
12.08
-0.14 (-1.19%)
After-hours: Sep 11, 2026, 7:30 PM EDT
TransAlta Stock Price History
| Date | Open | High | Low | Close | Adj. Close | Change | Volume |
|---|---|---|---|---|---|---|---|
| Sep 11, 2026 | 12.27 | 12.28 | 12.04 | 12.08 | 12.08 | -0.82% | 862,698 |
| Sep 10, 2026 | 12.24 | 12.31 | 12.06 | 12.18 | 12.18 | -1.38% | 1,103,684 |
| Sep 9, 2026 | 12.34 | 12.50 | 12.25 | 12.35 | 12.35 | -0.48% | 744,747 |
| Sep 8, 2026 | 12.05 | 12.52 | 11.98 | 12.41 | 12.41 | 3.76% | 1,023,092 |
| Sep 4, 2026 | 11.79 | 12.08 | 11.75 | 11.96 | 11.96 | 1.27% | 2,751,841 |
| Sep 3, 2026 | 11.91 | 11.97 | 11.72 | 11.81 | 11.81 | -0.25% | 1,373,315 |
| Sep 2, 2026 | 11.74 | 11.90 | 11.66 | 11.84 | 11.84 | 0.59% | 1,195,110 |
| Sep 1, 2026 | 12.09 | 12.12 | 11.69 | 11.77 | 11.77 | -2.24% | 6,123,063 |
| Aug 31, 2026 | 12.21 | 12.28 | 12.01 | 12.09 | 12.04 | -0.82% | 967,119 |
| Aug 28, 2026 | 12.54 | 12.56 | 12.10 | 12.19 | 12.14 | -2.48% | 871,436 |
| Aug 27, 2026 | 12.65 | 12.72 | 12.37 | 12.50 | 12.45 | -1.11% | 975,079 |
| Aug 26, 2026 | 12.18 | 12.75 | 12.18 | 12.64 | 12.59 | 3.18% | 1,284,727 |
| Aug 25, 2026 | 12.16 | 12.29 | 12.10 | 12.25 | 12.20 | 1.24% | 4,869,257 |
| Aug 24, 2026 | 12.16 | 12.16 | 11.87 | 12.10 | 12.05 | -0.90% | 1,055,744 |
| Aug 21, 2026 | 12.67 | 12.75 | 12.19 | 12.21 | 12.16 | -3.02% | 1,592,227 |
| Aug 20, 2026 | 12.29 | 12.84 | 12.29 | 12.59 | 12.54 | 1.70% | 1,173,444 |
| Aug 19, 2026 | 12.57 | 12.61 | 12.29 | 12.38 | 12.33 | -0.72% | 924,832 |
| Aug 18, 2026 | 12.62 | 12.68 | 12.44 | 12.47 | 12.42 | -1.89% | 965,666 |
| Aug 17, 2026 | 12.82 | 12.84 | 12.66 | 12.71 | 12.66 | -0.63% | 1,277,566 |
| Aug 14, 2026 | 12.60 | 12.88 | 12.60 | 12.79 | 12.74 | 1.43% | 889,692 |
| Aug 13, 2026 | 12.39 | 12.63 | 12.38 | 12.61 | 12.56 | 1.69% | 2,421,552 |
| Aug 12, 2026 | 12.50 | 12.67 | 12.30 | 12.40 | 12.35 | -0.64% | 3,841,056 |
| Aug 11, 2026 | 12.30 | 12.54 | 12.30 | 12.48 | 12.43 | 1.79% | 1,870,781 |
| Aug 10, 2026 | 12.39 | 12.47 | 12.22 | 12.26 | 12.21 | -1.37% | 963,521 |
| Aug 7, 2026 | 12.52 | 12.71 | 12.41 | 12.43 | 12.38 | -0.40% | 1,561,058 |
| Aug 6, 2026 | 12.67 | 12.73 | 12.41 | 12.48 | 12.43 | -1.50% | 1,772,807 |
| Aug 5, 2026 | 12.79 | 12.92 | 12.66 | 12.67 | 12.62 | -0.71% | 1,486,024 |
| Aug 4, 2026 | 12.48 | 12.85 | 12.31 | 12.76 | 12.71 | 3.40% | 3,610,673 |
| Aug 3, 2026 | 12.20 | 12.52 | 12.10 | 12.34 | 12.29 | -1.28% | 578,925 |
| Jul 31, 2026 | 12.88 | 13.00 | 12.48 | 12.50 | 12.45 | -2.80% | 3,415,750 |
| Jul 30, 2026 | 12.78 | 12.92 | 12.56 | 12.86 | 12.81 | 3.46% | 1,373,533 |
| Jul 29, 2026 | 12.82 | 12.84 | 12.33 | 12.43 | 12.38 | -2.43% | 2,757,763 |
| Jul 28, 2026 | 13.36 | 13.36 | 12.67 | 12.74 | 12.69 | -5.28% | 2,745,837 |
| Jul 27, 2026 | 13.73 | 13.73 | 13.30 | 13.45 | 13.39 | -1.97% | 1,169,413 |
| Jul 24, 2026 | 14.05 | 14.07 | 13.69 | 13.72 | 13.66 | -2.76% | 853,813 |
| Jul 23, 2026 | 14.04 | 14.18 | 13.91 | 14.11 | 14.05 | 0.50% | 943,952 |
| Jul 22, 2026 | 14.00 | 14.12 | 13.65 | 14.04 | 13.98 | 0.36% | 823,112 |
| Jul 21, 2026 | 13.91 | 14.02 | 13.69 | 13.99 | 13.93 | 1.97% | 1,392,566 |
| Jul 20, 2026 | 13.37 | 13.75 | 13.27 | 13.72 | 13.66 | 3.47% | 1,200,825 |
| Jul 17, 2026 | 13.14 | 13.45 | 13.05 | 13.26 | 13.20 | 0.15% | 1,274,007 |
| Jul 16, 2026 | 13.54 | 13.64 | 13.15 | 13.24 | 13.18 | -2.79% | 745,645 |
| Jul 15, 2026 | 13.89 | 14.04 | 13.48 | 13.62 | 13.56 | -2.23% | 1,277,706 |
| Jul 14, 2026 | 13.93 | 14.19 | 13.87 | 13.93 | 13.87 | - | 1,657,652 |
| Jul 13, 2026 | 14.23 | 14.26 | 13.87 | 13.93 | 13.87 | -2.04% | 920,171 |
| Jul 10, 2026 | 14.49 | 14.51 | 14.22 | 14.22 | 14.16 | -2.07% | 1,148,109 |
| Jul 9, 2026 | 14.58 | 14.85 | 14.30 | 14.52 | 14.46 | 0.28% | 1,447,830 |
| Jul 8, 2026 | 14.00 | 14.55 | 13.97 | 14.48 | 14.42 | 2.99% | 2,191,150 |
| Jul 7, 2026 | 13.54 | 14.09 | 13.53 | 14.06 | 14.00 | 3.31% | 1,409,483 |
| Jul 6, 2026 | 13.72 | 13.97 | 13.55 | 13.61 | 13.55 | 1.04% | 1,642,699 |
| Jul 2, 2026 | 13.73 | 13.84 | 13.31 | 13.47 | 13.41 | -0.96% | 2,793,643 |