Avoid the stress of overpaying for a stock or missing an opportunity by using the right tools and insights to evaluate TransAlta Corporation before investing.

In this article, we go over a few key elements for understanding TransAlta Corporation’s stock price such as:

• TransAlta Corporation’s current stock price and volume
• Why TransAlta Corporation’s stock price changed recently
• Upgrades and downgrades for TAC from analysts
• TAC’s stock price momentum as measured by its relative strength

About TransAlta Corporation (TAC)

Before we jump into TransAlta Corporation’s stock price, history, target price and what caused it to recently rise, let’s take a look at some background.

TransAlta Corporation engages in the development, production, and sale of electric energy. It operates through Hydro, Wind and Solar, Gas, Energy Transition, and Energy Marketing segments. The Hydro segment holds interest of approximately 922 megawatts (MW) located in Alberta and Canada. The Wind and Solar segment has a net ownership interest of approximately 2,587 MW located in Alberta, Canada, the Unites States, and Western Australia, as well as battery storage facilities. The Gas segment has a net ownership interest of approximately 4834 MW located in Alberta, Canada, the Unites States, and Western Australia. The Energy Transition segment has a net ownership interest of approximately 671 MW located in the United States, as well as operates the Skookumchuck hydro facility in Centralia. The Energy Marketing segment is involved in the trading of electricity, natural gas, and environmental products. TransAlta Corporation was founded in 1909 and is headquartered in Calgary, Canada.

Want to learn more about TransAlta Corporation’s stock? Click the button below to subscribe to A+ Investor and get access to everything you need to know about TransAlta Corporation.

TransAlta Corporation’s Stock Price as of Market Close

As of June 12, 2026, 4:00 PM, CST, TransAlta Corporation’s stock price was $13.390.

TransAlta Corporation is up 0.15% from its previous closing price of $13.370.

During the last market session, TransAlta Corporation’s stock traded between $13.270 and $13.650. Currently, there are approximately 212.77 million shares outstanding for TransAlta Corporation.

TransAlta Corporation’s trailing earnings per share are negative, so the stock does not have a meaningful P/E ratio. We suggest investors evaluate other financial metrics to understand its overall valuation.

TransAlta Corporation Stock Price History

TransAlta Corporation’s (TAC) price is currently down 5.84% so far this month.

During the month of June, TransAlta Corporation’s stock price has reached a high of $14.770 and a low of $12.170.

Over the last year, TransAlta Corporation has hit prices as high as $17.875 and as low as $10.280. Year to date, TransAlta Corporation’s stock is up 5.93%.

Sign Up to Receive a Free Special Report Showing How A+ Grades Can Help You Make Smarter Investment Decisions

What Caused TransAlta Corporation Stock’s Price to Rise?

Stock prices are primarily based on seller supply and buyer demand. But have you ever wondered about what other factors affect a stock's price?

When an analyst changes their opinion of a stock by upgrading or downgrading their rating, it often leads to a sudden stock price adjustment. As of June 12, 2026, there were 0 analysts who downgraded TransAlta Corporation’s stock and 1 analyst who upgraded over the last month.

Additionally, you'll want to evaluate TransAlta Corporation’s financial health and valuation. Investors can use AAII's Value Grade, which combines six key valuation metrics like P/E and P/S ratios for a comprehensive analysis to conduct analysis on TransAlta Corporation’s valuation and financial health. This approach mitigates the limitations of single-metric evaluations.

TransAlta Corporation’s current valuation based on AAII’s Value Grade is a C, which means it is considered to be Average.

Learn how to evaluate stocks with AAII Grades and Scores with A+ Investor today.

Lastly, news and media coverage as well as recent press reports about the company or its industry may cause stock prices to fluctuate. You can check out the most recent news articles about TransAlta Corporation (TAC) by visiting AAII Stock Evaluator.

Relative Price Strength of TransAlta Corporation

Relative price strength measures a stock's performance against the market, helping investors identify stocks that are outperforming benchmarks.

For AAII’s Momentum Grade, a weighted relative price strength is calculated. Follow this link to learn more about the Momentum Grade.

As of June 12, 2026, TransAlta Corporation has a weighted four-quarter relative price strength of -1.34%, which translates to a Momentum Score of 53 and is considered to be Average.

Want to learn more about how TransAlta Corporation is graded based on AAII’s composite scores for value, growth, quality and earnings estimate revisions? Subscribe to A+ Investor today.

TransAlta Corporation Stock Price: Bottom Line

As of June 12, 2026, TransAlta Corporation’s stock price is $13.390, which is up 0.15% from its previous closing price.

AAII advises against making stock decisions based solely on price or past returns. Instead, consider a variety of metrics, fundamentals, and analytics to evaluate a stock like TransAlta Corporation stock prices are influenced by market supply and demand and offer just a snapshot of a company's overall health.

Subscribing to AAII's A+ Investor provides access to comprehensive analytics and insights for confident investing.