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Video: Compound Annual Growth Rate (CAGR) Definition
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 |
| Date |
Open |
High |
Low |
Close |
Volume |
| 07/06/2026 |
$13.72 |
$13.97 |
$13.55 |
$13.61 |
1.64M | | 07/07/2026 |
$13.54 |
$14.09 |
$13.53 |
$14.06 |
1.41M | | 07/08/2026 |
$14.00 |
$14.55 |
$13.97 |
$14.48 |
2.19M | | 07/09/2026 |
$14.58 |
$14.85 |
$14.30 |
$14.52 |
1.45M | | 07/10/2026 |
$14.49 |
$14.51 |
$14.22 |
$14.22 |
1.15M |
 |
| TransAlta Corporation owns, operates and develops a diverse fleet of electrical power generation assets in Canada, the U.S. and Australia. It provides municipalities, medium and large industries, businesses and utility customers with affordable, energy-efficient and reliable power. It also produces wind power and hydro-electric power. Its segments include Hydro, Wind & Solar, Gas, Energy Transition, Energy Marketing, and Corporate. It has a diversified fleet of hydro, wind, solar, natural gas, and cogeneration generate 7,300 megawatt of electricity. It delivers renewable energy solutions for large scale commercial partners, including tech companies. | |
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TransAlta (TAC) has the following price history information. Looking back at TAC historical stock prices for the last five trading days, on July 06, 2026, TAC opened at $13.72, traded as high as $13.97 and as low as $13.55, and closed at $13.61. Trading volume was a total of 1.64M shares. On July 07, 2026, TAC opened at $13.54, traded as high as $14.09 and as low as $13.53, and closed at $14.06. Trading volume was a total of 1.41M shares. On July 08, 2026, TAC opened at $14.00, traded as high as $14.55 and as low as $13.97, and closed at $14.48. Trading volume was a total of 2.19M shares. On July 09, 2026, TAC opened at $14.58, traded as high as $14.85 and as low as $14.30, and closed at $14.52. Trading volume was a total of 1.45M shares. On July 10, 2026, TAC opened at $14.49, traded as high as $14.51 and as low as $14.22, and closed at $14.22. Trading volume was a total of 1.15M shares.
TAC Historical Stock Prices By Date:

Below, we examine the compound annual growth rate — CAGR for short — of an investment into TransAlta shares, starting with a $10,000 purchase of TAC, and working forward through the historical stock price information to today.
Growth of $10,000.00
With Dividends Reinvested
|
| Start date: |
07/14/2016 |
|
| End date: |
07/10/2026 |
|
| Start price/share: |
$5.00 |
|
| End price/share: |
$14.22 |
|
| Starting shares: |
2,000.00 |
|
| Ending shares: |
2,385.16 |
|
| Dividends reinvested/share: |
$1.35 |
|
| Total return: |
239.17% |
|
| Average Annual Total Return: |
13.00% |
|
| Starting investment: |
$10,000.00 |
|
| Ending investment: |
$33,922.95 |
|
| Years: |
9.99 |
|
| |
Growth of $10,000.00
Without Dividends Reinvested
|
| Start date: |
07/14/2016 |
|
| End date: |
07/10/2026 |
|
| Start price/share: |
$5.00 |
|
| End price/share: |
$14.22 |
|
| Dividends collected/share: |
$1.35 |
|
| Total return: |
211.44% |
|
| Average Annual Total Return: |
12.04% |
|
| Starting investment: |
$10,000.00 |
|
| Ending investment: |
$31,150.17 |
|
| Years: |
9.99 |
|
|
 |
| Date |
Close |
| 07/06/2026 | $13.61 | | 07/07/2026 | $14.06 | | 07/08/2026 | $14.48 | | 07/09/2026 | $14.52 | | 07/10/2026 | $14.22 |
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