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The price of TransAlta Corporation (TAC) on October 9, 2026 is 13.11 USD, +1.71% on the day. Over 52 weeks the stock traded between 11.38 USD and 17.88 USD; the price now sits 23% of the way up that range. Over the past year the price changed by -14.07%.
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Next earnings report: none scheduled in the next five weeks · Earnings calendar
TransAlta Corporation trades on NYSE under the ticker TAC. The company belongs to the Utilities sector. The trading history on this page starts on 22 August 2016.
Over the past 52 weeks TAC has traded between 11.38 $ and 17.88 $. As of 09 October 2026 the price stood 23.23 % of the way from the 52-week low to the high.
Over one year TAC shares fell 14.07 %; over six months they fell 6.80 %. Volatility over 90 days is 38.08 %. Dividends are not included: this is price change only, as of 09 October 2026.
TransAlta Corporation reported revenue of 2.4B CAD and a net loss of 158M CAD for the latest fiscal year. Net margin is −6.57 %. Revenue changed by −15.47 % year over year. Earnings per share are −0.64 CAD.
| Date | Open | High | Low | Close | Volume, shares |
|---|---|---|---|---|---|
| 08 October 2026 | 12.78 | 12.99 | 12.71 | 12.89 | 1M |
| 07 October 2026 | 13.00 | 13.20 | 12.84 | 12.88 | 1M |
| 06 October 2026 | 12.57 | 13.23 | 12.56 | 13.12 | 2M |
| 05 October 2026 | 12.39 | 12.54 |
The series is stated in the current share scale after splits; dividends are not included in the price
Based on the fiscal year ended 31 December 2025
The sector median covers every company in the sector on the US market, loss-making ones included.
Share count is a period average, so market cap is approximate.
TransAlta Corporation (TAC) is a public company in the utilities sector. Its common stock trade on NYSE.
Over the trailing twelve months as reported to 2025-12-31, revenue was 2.4bn CA$, net income was -158.0m CA$.
This summary is compiled automatically from SEC filings and exchange data.
Address:TRANSALTA PLACE 1400, 1100 - 1ST STREET S.E., CALGARY, AB, T2G 1B1, CA
TAC has a return on equity of −10.78 %, below the sector median of 8.77 %. Return on assets is −1.82 %, below the sector median of 2.46 %. Operating margin is 5.82 %, below the sector median of 20.74 %.
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| 12.17 |
| 12.47 |
| 770,900 |
| 02 October 2026 | 12.27 | 12.44 | 12.18 | 12.35 | 1M |
| 01 October 2026 | 12.08 | 12.36 | 12.08 | 12.22 | 1M |
| 30 September 2026 | 11.87 | 12.14 | 11.74 | 12.08 | 1M |
| 29 September 2026 | 11.79 | 11.87 | 11.60 | 11.79 | 996,100 |
| 28 September 2026 | 11.49 | 11.98 | 11.42 | 11.81 | 2M |
| 25 September 2026 | 11.78 | 11.89 | 11.47 | 11.53 | 789,300 |
| 24 September 2026 | 11.82 | 11.87 | 11.68 | 11.77 | 992,800 |
| 23 September 2026 | 11.86 | 12.05 | 11.81 | 11.95 | 1M |
| 22 September 2026 | 12.26 | 12.36 | 11.89 | 11.93 | 3M |
| 21 September 2026 | 12.35 | 12.41 | 12.22 | 12.31 | 2M |
| 18 September 2026 | 12.30 | 12.33 | 12.13 | 12.22 | 3M |
| 17 September 2026 | 12.10 | 12.31 | 12.07 | 12.29 | 803,400 |
| 16 September 2026 | 11.63 | 12.12 | 11.59 | 11.95 | 3M |
| 15 September 2026 | 11.82 | 11.96 | 11.47 | 11.50 | 2M |
| 14 September 2026 | 11.98 | 11.98 | 11.72 | 11.79 | 3M |
| 11 September 2026 | 12.27 | 12.28 | 12.04 | 12.08 | 3M |