What is the current 10-day volatility of TAC?

As of today, TAC 10-day volatility is 26.62%

What 10-day volatility category does TAC fall into?

Based on its current 10-day historical volatility, TAC falls into the moderate volatility category

What is TAC 10-day volatility 1-year high?

TAC 10-day volatility reached a 1-year high of 119.85% on January 30, 2025

What is TAC 10-day volatility 1-year low?

TAC 10-day volatility reached a 1-year low of 17.11% on February 19, 2025

What is the current 1-month volatility of TAC?

As of today, TAC 1-month volatility is 31.77%

What 1-month volatility category does TAC fall into?

Based on its current 1-month historical volatility, TAC falls into the moderate volatility category

What is TAC 1-month volatility 1-year high?

TAC 1-month volatility reached a 1-year high of 86.67% on February 3, 2025

What is TAC 1-month volatility 1-year low?

TAC 1-month volatility reached a 1-year low of 19.23% on October 2, 2025

What is the current 3-month volatility of TAC?

As of today, TAC 3-month volatility is 45.83%

What 3-month volatility category does TAC fall into?

Based on its current 3-month historical volatility, TAC falls into the high volatility category

What is TAC 3-month volatility 1-year high?

TAC 3-month volatility reached a 1-year high of 65.16% on April 14, 2025

What is TAC 3-month volatility 1-year low?

TAC 3-month volatility reached a 1-year low of 26.79% on October 10, 2025

What is the current 1-year volatility of TAC?

As of today, TAC 1-year volatility is 46.43%

What 1-year volatility category does TAC fall into?

Based on its current 1-year historical volatility, TAC falls into the high volatility category

What is TAC 1-year volatility 1-year high?

TAC 1-year volatility reached a 1-year high of 47.57% on November 20, 2025

What is TAC 1-year volatility 1-year low?

TAC 1-year volatility reached a 1-year low of 33.50% on January 15, 2025

TAC Stock Volatility History & Chart Since 2001

10-Day

26.62%

January 9, 2026

Summary

Current Value: As of today, TAC 10-day volatility is 26.62%, up +5.89% on January 9, 2026
Value Category: Based on its current 10-day historical volatility, TAC falls into the moderate volatility category
1-Year High: TAC 10-day volatility reached a 1-year high of 119.85% on January 30, 2025
1-Year Low: TAC 10-day volatility reached a 1-year low of 17.11% on February 19, 2025

10-Day Volatility Chart

Performance

TAC Performance
Metric	Date	Value	1D	1M	3M	YTD	1Y	3Y	5Y
10-Day Volatility	Jan 9, 26	26.62%	+5.9%	-17.9%	-15.7%	-17.5%	+28.4%	-17.2%	-7.0%
1-Month Volatility	Jan 9, 26	31.77%	-3.5%	-17.7%	+13.9%	+3.9%	+12.3%	-24.3%	+10.2%
3-Month Volatility	Jan 9, 26	45.83%	+1.1%	+1.0%	+59.0%	-2.7%	+13.7%	+26.0%	+75.9%
1-Year Volatility	Jan 9, 26	46.43%	+0.0%	+0.6%	+3.0%	+0.1%	+38.5%	+55.2%	-14.7%
14-Day RSI	Jan 9, 26	35.36	+12.7%	-27.9%	-58.0%	+6.2%	-28.4%	-30.4%	-57.5%
Beta	Jan 9, 26	1.19	0.0%	+2.6%	+15.5%	0.0%	+250.0%	+147.9%	+7.2%
ATR	Jan 9, 26	$0.45	-0.3%	-27.5%	+12.7%	-0.4%	-10.9%	+75.3%	+99.5%
Price	Jan 9, 26	$12.37	+1.4%	-15.3%	-20.7%	-2.1%	-6.7%	+35.9%	+48.0%
200-Day SMA	Jan 9, 26	$12.23	+0.1%	+2.8%	+9.0%	+0.7%	+36.7%	+21.7%	+95.5%
50-Day SMA	Jan 9, 26	$14.18	-0.7%	-8.2%	+9.9%	-3.6%	+17.6%	+55.1%	+105.0%

10-Day Volatility History

Date	Value	Change
Jan 9, 2026	26.62%	-17.5%
Dec 31, 2025	32.25%	+29.4%
Dec 31, 2024	24.92%	+11.1%
Dec 31, 2023	22.43%	-54.2%
Dec 31, 2022	48.93%	+134.8%
Dec 31, 2021	20.84%	-42.1%
Dec 31, 2020	35.97%	+44.9%
Dec 31, 2019	24.83%	-51.8%
Dec 31, 2018	51.49%	+86.9%
Dec 31, 2017	27.55%	+17.7%
Dec 31, 2016	23.41%	-51.3%
Dec 31, 2015	48.05%	+113.2%
Dec 31, 2014	22.54%	+39.1%

Date	Value	Change
Dec 31, 2013	16.20%	+115.4%
Dec 31, 2012	7.52%	-61.6%
Dec 31, 2011	19.59%	+69.2%
Dec 31, 2010	11.58%	-17.4%
Dec 31, 2009	14.02%	-53.1%
Dec 31, 2008	29.89%	+90.3%
Dec 31, 2007	15.71%	+39.1%
Dec 31, 2006	11.29%	-18.2%
Dec 31, 2005	13.81%	+43.7%
Dec 31, 2004	9.61%	-9.9%
Dec 31, 2003	10.67%	-37.5%
Dec 31, 2002	17.07%	+26.4%
Dec 31, 2001	13.50%	-

FAQ

What is the current 10-day volatility of TAC?
As of today, TAC 10-day volatility is 26.62%
What 10-day volatility category does TAC fall into?
Based on its current 10-day historical volatility, TAC falls into the moderate volatility category
What is TAC 10-day volatility 1-year high?
TAC 10-day volatility reached a 1-year high of 119.85% on January 30, 2025
What is TAC 10-day volatility 1-year low?
TAC 10-day volatility reached a 1-year low of 17.11% on February 19, 2025

1-Month

31.77%

January 9, 2026

Summary

Current Value: As of today, TAC 1-month volatility is 31.77%, down -3.55% on January 9, 2026
Value Category: Based on its current 1-month historical volatility, TAC falls into the moderate volatility category
1-Year High: TAC 1-month volatility reached a 1-year high of 86.67% on February 3, 2025
1-Year Low: TAC 1-month volatility reached a 1-year low of 19.23% on October 2, 2025

Performance

TAC Performance
Metric	Date	Value	1D	1M	3M	YTD	1Y	3Y	5Y
1-Month Volatility	Jan 9, 26	31.77%	-3.5%	-17.7%	+13.9%	+3.9%	+12.3%	-24.3%	+10.2%
10-Day Volatility	Jan 9, 26	26.62%	+5.9%	-17.9%	-15.7%	-17.5%	+28.4%	-17.2%	-7.0%
3-Month Volatility	Jan 9, 26	45.83%	+1.1%	+1.0%	+59.0%	-2.7%	+13.7%	+26.0%	+75.9%
1-Year Volatility	Jan 9, 26	46.43%	+0.0%	+0.6%	+3.0%	+0.1%	+38.5%	+55.2%	-14.7%
14-Day RSI	Jan 9, 26	35.36	+12.7%	-27.9%	-58.0%	+6.2%	-28.4%	-30.4%	-57.5%
Beta	Jan 9, 26	1.19	0.0%	+2.6%	+15.5%	0.0%	+250.0%	+147.9%	+7.2%
ATR	Jan 9, 26	$0.45	-0.3%	-27.5%	+12.7%	-0.4%	-10.9%	+75.3%	+99.5%
Price	Jan 9, 26	$12.37	+1.4%	-15.3%	-20.7%	-2.1%	-6.7%	+35.9%	+48.0%
200-Day SMA	Jan 9, 26	$12.23	+0.1%	+2.8%	+9.0%	+0.7%	+36.7%	+21.7%	+95.5%
50-Day SMA	Jan 9, 26	$14.18	-0.7%	-8.2%	+9.9%	-3.6%	+17.6%	+55.1%	+105.0%

1-Month Volatility History

Date	Value	Change
Jan 9, 2026	30.20%	-0.4%
Dec 31, 2025	30.33%	-31.7%
Dec 31, 2024	44.38%	+51.5%
Dec 31, 2023	29.30%	-21.5%
Dec 31, 2022	37.32%	+77.3%
Dec 31, 2021	21.05%	-24.4%
Dec 31, 2020	27.85%	+11.3%
Dec 31, 2019	25.02%	-37.5%
Dec 31, 2018	40.04%	+55.4%
Dec 31, 2017	25.76%	+7.4%
Dec 31, 2016	23.98%	-58.8%
Dec 31, 2015	58.21%	+107.5%
Dec 31, 2014	28.05%	+109.6%

Date	Value	Change
Dec 31, 2013	13.38%	+12.8%
Dec 31, 2012	11.86%	-36.2%
Dec 31, 2011	18.59%	+49.8%
Dec 31, 2010	12.41%	-27.9%
Dec 31, 2009	17.22%	-54.7%
Dec 31, 2008	38.05%	+93.5%
Dec 31, 2007	19.66%	+60.2%
Dec 31, 2006	12.27%	-21.5%
Dec 31, 2005	15.64%	-12.6%
Dec 31, 2004	17.90%	+66.7%
Dec 31, 2003	10.74%	-39.6%
Dec 31, 2002	17.79%	-5.2%
Dec 31, 2001	18.77%	-

FAQ

What is the current 1-month volatility of TAC?
As of today, TAC 1-month volatility is 31.77%
What 1-month volatility category does TAC fall into?
Based on its current 1-month historical volatility, TAC falls into the moderate volatility category
What is TAC 1-month volatility 1-year high?
TAC 1-month volatility reached a 1-year high of 86.67% on February 3, 2025
What is TAC 1-month volatility 1-year low?
TAC 1-month volatility reached a 1-year low of 19.23% on October 2, 2025

3-Month

45.83%

January 9, 2026

Summary

Current Value: As of today, TAC 3-month volatility is 45.83%, up +1.10% on January 9, 2026
Value Category: Based on its current 3-month historical volatility, TAC falls into the high volatility category
1-Year High: TAC 3-month volatility reached a 1-year high of 65.16% on April 14, 2025
1-Year Low: TAC 3-month volatility reached a 1-year low of 26.79% on October 10, 2025

Performance

TAC Performance
Metric	Date	Value	1D	1M	3M	YTD	1Y	3Y	5Y
3-Month Volatility	Jan 9, 26	45.83%	+1.1%	+1.0%	+59.0%	-2.7%	+13.7%	+26.0%	+75.9%
10-Day Volatility	Jan 9, 26	26.62%	+5.9%	-17.9%	-15.7%	-17.5%	+28.4%	-17.2%	-7.0%
1-Month Volatility	Jan 9, 26	31.77%	-3.5%	-17.7%	+13.9%	+3.9%	+12.3%	-24.3%	+10.2%
1-Year Volatility	Jan 9, 26	46.43%	+0.0%	+0.6%	+3.0%	+0.1%	+38.5%	+55.2%	-14.7%
14-Day RSI	Jan 9, 26	35.36	+12.7%	-27.9%	-58.0%	+6.2%	-28.4%	-30.4%	-57.5%
Beta	Jan 9, 26	1.19	0.0%	+2.6%	+15.5%	0.0%	+250.0%	+147.9%	+7.2%
ATR	Jan 9, 26	$0.45	-0.3%	-27.5%	+12.7%	-0.4%	-10.9%	+75.3%	+99.5%
Price	Jan 9, 26	$12.37	+1.4%	-15.3%	-20.7%	-2.1%	-6.7%	+35.9%	+48.0%
200-Day SMA	Jan 9, 26	$12.23	+0.1%	+2.8%	+9.0%	+0.7%	+36.7%	+21.7%	+95.5%
50-Day SMA	Jan 9, 26	$14.18	-0.7%	-8.2%	+9.9%	-3.6%	+17.6%	+55.1%	+105.0%

3-Month Volatility History

Date	Value	Change
Jan 9, 2026	45.46%	-2.8%
Dec 31, 2025	46.78%	+18.9%
Dec 31, 2024	39.35%	+8.0%
Dec 31, 2023	36.45%	-5.8%
Dec 31, 2022	38.68%	+67.6%
Dec 31, 2021	23.08%	-10.1%
Dec 31, 2020	25.68%	-18.3%
Dec 31, 2019	31.44%	+9.5%
Dec 31, 2018	28.72%	+12.2%
Dec 31, 2017	25.60%	-55.9%
Dec 31, 2016	58.10%	+7.6%
Dec 31, 2015	53.98%	+100.5%
Dec 31, 2014	26.92%	+55.7%

Date	Value	Change
Dec 31, 2013	17.29%	-7.0%
Dec 31, 2012	18.60%	-30.8%
Dec 31, 2011	26.88%	+64.5%
Dec 31, 2010	16.34%	-32.6%
Dec 31, 2009	24.24%	-67.3%
Dec 31, 2008	74.09%	+201.8%
Dec 31, 2007	24.55%	+26.2%
Dec 31, 2006	19.46%	-26.5%
Dec 31, 2005	26.47%	+28.9%
Dec 31, 2004	20.53%	+25.8%
Dec 31, 2003	16.32%	-31.4%
Dec 31, 2002	23.80%	-3.6%
Dec 31, 2001	24.69%	-

FAQ

What is the current 3-month volatility of TAC?
As of today, TAC 3-month volatility is 45.83%
What 3-month volatility category does TAC fall into?
Based on its current 3-month historical volatility, TAC falls into the high volatility category
What is TAC 3-month volatility 1-year high?
TAC 3-month volatility reached a 1-year high of 65.16% on April 14, 2025
What is TAC 3-month volatility 1-year low?
TAC 3-month volatility reached a 1-year low of 26.79% on October 10, 2025

1-Year

46.43%

January 9, 2026

Summary

Current Value: As of today, TAC 1-year volatility is 46.43%, up +0.04% on January 9, 2026
Value Category: Based on its current 1-year historical volatility, TAC falls into the high volatility category
1-Year High: TAC 1-year volatility reached a 1-year high of 47.57% on November 20, 2025
1-Year Low: TAC 1-year volatility reached a 1-year low of 33.50% on January 15, 2025

Performance

TAC Performance
Metric	Date	Value	1D	1M	3M	YTD	1Y	3Y	5Y
1-Year Volatility	Jan 9, 26	46.43%	+0.0%	+0.6%	+3.0%	+0.1%	+38.5%	+55.2%	-14.7%
10-Day Volatility	Jan 9, 26	26.62%	+5.9%	-17.9%	-15.7%	-17.5%	+28.4%	-17.2%	-7.0%
1-Month Volatility	Jan 9, 26	31.77%	-3.5%	-17.7%	+13.9%	+3.9%	+12.3%	-24.3%	+10.2%
3-Month Volatility	Jan 9, 26	45.83%	+1.1%	+1.0%	+59.0%	-2.7%	+13.7%	+26.0%	+75.9%
1-Year Volatility	Jan 9, 26	46.43%	+0.0%	+0.6%	+3.0%	+0.1%	+38.5%	+55.2%	-14.7%
14-Day RSI	Jan 9, 26	35.36	+12.7%	-27.9%	-58.0%	+6.2%	-28.4%	-30.4%	-57.5%
Beta	Jan 9, 26	1.19	0.0%	+2.6%	+15.5%	0.0%	+250.0%	+147.9%	+7.2%
ATR	Jan 9, 26	$0.45	-0.3%	-27.5%	+12.7%	-0.4%	-10.9%	+75.3%	+99.5%
Price	Jan 9, 26	$12.37	+1.4%	-15.3%	-20.7%	-2.1%	-6.7%	+35.9%	+48.0%
200-Day SMA	Jan 9, 26	$12.23	+0.1%	+2.8%	+9.0%	+0.7%	+36.7%	+21.7%	+95.5%
50-Day SMA	Jan 9, 26	$14.18	-0.7%	-8.2%	+9.9%	-3.6%	+17.6%	+55.1%	+105.0%

1-Year Volatility History

Date	Value	Change
Jan 9, 2026	46.34%	-0.1%
Dec 31, 2025	46.37%	+39.3%
Dec 31, 2024	33.29%	+18.2%
Dec 31, 2023	28.17%	-9.1%
Dec 31, 2022	30.98%	+29.9%
Dec 31, 2021	23.84%	-56.0%
Dec 31, 2020	54.21%	+84.4%
Dec 31, 2019	29.40%	+15.7%
Dec 31, 2018	25.41%	-1.4%
Dec 31, 2017	25.78%	-50.3%
Dec 31, 2016	51.86%	+32.6%
Dec 31, 2015	39.10%	+80.9%
Dec 31, 2014	21.61%	-7.4%

Date	Value	Change
Dec 31, 2013	23.34%	+6.9%
Dec 31, 2012	21.83%	-4.1%
Dec 31, 2011	22.76%	-4.5%
Dec 31, 2010	23.82%	-32.8%
Dec 31, 2009	35.47%	-29.6%
Dec 31, 2008	50.40%	+103.8%
Dec 31, 2007	24.73%	+10.0%
Dec 31, 2006	22.48%	+8.3%
Dec 31, 2005	20.75%	+10.8%
Dec 31, 2004	18.72%	+2.7%
Dec 31, 2003	18.23%	-26.7%
Dec 31, 2002	24.88%	-13.2%
Dec 31, 2001	28.66%	-

FAQ

What is the current 1-year volatility of TAC?
As of today, TAC 1-year volatility is 46.43%
What 1-year volatility category does TAC fall into?
Based on its current 1-year historical volatility, TAC falls into the high volatility category
What is TAC 1-year volatility 1-year high?
TAC 1-year volatility reached a 1-year high of 47.57% on November 20, 2025
What is TAC 1-year volatility 1-year low?
TAC 1-year volatility reached a 1-year low of 33.50% on January 15, 2025

Data Sources & References

TAC Official Website www.transalta.com
Most Recent Quarterly Report (10-Q) www.sec.gov/Archives/edgar/data/1144800/000114480025000039/0001144800-25-000039-index.htm
Most Recent Annual Report (10-K) www.sec.gov/Archives/edgar/data/1144800/000114480025000006/0001144800-25-000006-index.htm
TAC Profile on Yahoo Finance finance.yahoo.com/quote/TAC
TAC Profile on NASDAQ.com www.nasdaq.com/market-activity/stocks/tac