TransAlta Corporation (TAC) Stock Price History
Historical prices from 2001 to 2026
- 1M
- +10.3%
- 3M
- +10.5%
- YTD
- +5.5%
- 1Y
- +20.7%
- 3Y
- +12.4%
- 5Y
- +7.6%
Loading 10-year price history...
TAC Historical Performance
TAC Annual Returns
Year-by-year price performance · 2002–2026
- 2002 annual price return
- -19.0%
- 2003 annual price return
- +27.3%
- 2004 annual price return
- +4.6%
- 2005 annual price return
- +44.5%
- 2006 annual price return
- -0.6%
- 2007 annual price return
- +45.2%
- 2008 annual price return
- -40.7%
- 2009 annual price return
- +7.7%
- 2010 annual price return
- -6.0%
- 2011 annual price return
- -3.7%
- 2012 annual price return
- -27.9%
- 2013 annual price return
- -18.3%
- 2014 annual price return
- -28.4%
- 2015 annual price return
- -61.2%
- 2016 annual price return
- +57.1%
- 2017 annual price return
- +8.2%
- 2018 annual price return
- -30.8%
- 2019 annual price return
- +71.3%
- 2020 annual price return
- +8.1%
- 2021 annual price return
- +45.2%
- 2022 annual price return
- -23.5%
- 2023 annual price return
- -6.6%
- 2024 annual price return
- +71.1%
- 2025 annual price return
- -10.2%
- 2026 annual price return
- +5.5%
TAC Stock Price Trajectory (2001–2026)
As of June 21, 2026, TransAlta Corporation (TAC) trades at $13.74, representing a +20.7% return over the past year. The stock has delivered a +53.1% total return over five years (+7.6% CAGR), reflecting significant long-term value creation.
The stock reached its all-time high of $37.84 on July 21, 2008. From this peak, TAC has corrected -63.7%, currently trading 1% above its 200-day moving average, indicating continued institutional support.
When compared to Utilities sector peers NRG (-11.5% 1Y), VST (-9.6% 1Y), and CWEN (+16.6% 1Y), TAC has underperformed the peer group average. Compare TAC vs NRG →
TAC Historical Price Data · from 2001
Rows 1–50 of 6,259| Date | Open | High | Low | Close | Volume | Change % |
|---|---|---|---|---|---|---|
| 2026-06-18 | 13.74 | 13.85 | 13.51 | 13.74 | 1.48M | +1.33% |
| 2026-06-17 | 13.47 | 13.88 | 13.46 | 13.56 | 1.59M | +0.37% |
| 2026-06-16 | 13.55 | 13.68 | 13.45 | 13.51 | 1.02M | -0.44% |
| 2026-06-15 | 13.40 | 13.65 | 13.32 | 13.57 | 361K | +1.34% |
| 2026-06-12 | 13.36 | 13.65 | 13.27 | 13.39 | 1.37M | +0.15% |
| 2026-06-11 | 12.44 | 13.48 | 12.40 | 13.37 | 2.01M | +8.00% |
| 2026-06-10 | 12.63 | 12.78 | 12.17 | 12.38 | 1.29M | -0.64% |
| 2026-06-09 | 12.55 | 12.83 | 12.34 | 12.46 | 1.74M | -0.40% |
| 2026-06-08 | 12.69 | 12.82 | 12.41 | 12.51 | 1.17M | -1.34% |
| 2026-06-05 | 12.95 | 13.13 | 12.47 | 12.68 | 2.03M | -2.16% |
| 2026-06-04 | 13.61 | 13.62 | 12.70 | 12.96 | 3.88M | -10.37% |
| 2026-06-03 | 14.45 | 14.77 | 14.35 | 14.46 | 1.40M | +0.84% |
| 2026-06-02 | 14.22 | 14.61 | 14.17 | 14.34 | 1.34M | +1.27% |
| 2026-06-01 | 14.02 | 14.36 | 13.92 | 14.16 | 418K | -0.42% |
| 2026-05-29 | 14.01 | 14.25 | 13.82 | 14.22 | 907K | +1.35% |
| 2026-05-28 | 13.84 | 14.10 | 13.82 | 14.03 | 663K | +1.52% |
| 2026-05-27 | 13.90 | 14.08 | 13.76 | 13.82 | 675K | -2.12% |
| 2026-05-26 | 13.74 | 14.22 | 13.71 | 14.12 | 910K | +4.05% |
| 2026-05-22 | 13.56 | 13.82 | 13.42 | 13.57 | 55K | +0.52% |
| 2026-05-21 | 12.89 | 13.50 | 12.88 | 13.50 | 870K | +4.01% |
| 2026-05-20 | 12.96 | 13.06 | 12.80 | 12.98 | 864K | +0.93% |
| 2026-05-19 | 12.58 | 13.08 | 12.48 | 12.86 | 1.16M | +3.21% |
| 2026-05-18 | 12.76 | 12.85 | 12.34 | 12.46 | 515K | -2.50% |
| 2026-05-15 | 12.72 | 12.93 | 12.61 | 12.78 | 703K | -1.31% |
| 2026-05-14 | 12.71 | 13.06 | 12.60 | 12.95 | 555K | +1.73% |
| 2026-05-13 | 12.59 | 12.83 | 12.50 | 12.73 | 554K | +1.19% |
| 2026-05-12 | 12.64 | 12.69 | 12.29 | 12.58 | 827K | -1.72% |
| 2026-05-11 | 12.81 | 12.97 | 12.71 | 12.80 | 663K | +0.31% |
| 2026-05-08 | 12.78 | 12.88 | 12.52 | 12.76 | 863K | -0.08% |
| 2026-05-07 | 12.88 | 12.88 | 12.38 | 12.77 | 1.04M | -0.16% |
| 2026-05-06 | 12.62 | 13.19 | 12.40 | 12.79 | 1.87M | +1.51% |
| 2026-05-05 | 12.69 | 12.73 | 12.44 | 12.60 | 535K | -0.16% |
| 2026-05-04 | 12.48 | 12.62 | 12.36 | 12.62 | 1.18M | +1.12% |
| 2026-05-01 | 12.49 | 12.63 | 12.39 | 12.48 | 1.03M | 0.00% |
| 2026-04-30 | 12.13 | 12.56 | 12.08 | 12.48 | 1.68M | +3.91% |
| 2026-04-29 | 12.69 | 12.78 | 11.94 | 12.01 | 1.36M | -5.51% |
| 2026-04-28 | 12.48 | 12.87 | 12.45 | 12.71 | 806K | +0.95% |
| 2026-04-27 | 12.63 | 12.70 | 12.41 | 12.59 | 639K | +0.80% |
| 2026-04-24 | 12.12 | 12.55 | 11.98 | 12.49 | 904K | +3.39% |
| 2026-04-23 | 12.33 | 12.54 | 11.93 | 12.08 | 745K | -1.63% |
| 2026-04-22 | 12.31 | 12.38 | 12.02 | 12.28 | 599K | +0.99% |
| 2026-04-21 | 12.45 | 12.70 | 12.13 | 12.16 | 999K | -3.95% |
| 2026-04-20 | 12.65 | 12.78 | 12.54 | 12.66 | 1.01M | 0.00% |
| 2026-04-17 | 13.35 | 13.50 | 12.65 | 12.66 | 1.75M | -6.22% |
| 2026-04-16 | 13.66 | 13.68 | 13.36 | 13.50 | 553K | -1.32% |
| 2026-04-15 | 13.46 | 13.90 | 13.32 | 13.68 | 772K | +1.41% |
| 2026-04-14 | 13.71 | 13.79 | 13.43 | 13.49 | 659K | -1.39% |
| 2026-04-13 | 13.92 | 13.98 | 13.66 | 13.68 | 420K | -2.29% |
| 2026-04-10 | 13.88 | 14.12 | 13.87 | 14.00 | 522K | +1.23% |
| 2026-04-09 | 13.80 | 14.24 | 13.75 | 13.83 | 879K | 0.00% |
Intrinsic Valuation
DCF models, multiple analysis, and analyst estimates.
Historical Returns
10-year return with dividends reinvested.
DCA Calculator
See how regular investing compounds over time.
Peer Comparison
Compare growth, multiples, and margins vs sector.
TAC — Frequently Asked Questions
Quick answers to the most common questions about buying TAC stock.
How has TAC stock performed recently?
TAC returned +20.7% over the past year, beating its 5-year annualized CAGR of +7.6%. The stock trades above its 200-day moving average, confirming the uptrend.
What is TAC's all-time high price?
TransAlta Corporation reached $37.84 on 2008-07-21. The 52-week high is $17.88. Current 1-year return of +20.7% places the stock closer to historical peaks.
Where can I download TAC historical price data?
This page provides TAC daily OHLCV data with 50-day MA, 200-day MA, and RSI indicators. Data spans 2001-2026, downloadable in CSV format.