What is the current 10-day volatility of WLK?

As of today, WLK 10-day volatility is 40.78%

What 10-day volatility category does WLK fall into?

Based on its current 10-day historical volatility, WLK falls into the high volatility category

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

WLK 10-day volatility reached a 1-year high of 97.53% on April 11, 2025

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

WLK 10-day volatility reached a 1-year low of 19.59% on September 25, 2025

What is the current 1-month volatility of WLK?

As of today, WLK 1-month volatility is 43.61%

What 1-month volatility category does WLK fall into?

Based on its current 1-month historical volatility, WLK falls into the high volatility category

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

WLK 1-month volatility reached a 1-year high of 81.25% on May 2, 2025

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

WLK 1-month volatility reached a 1-year low of 29.62% on April 1, 2025

What is the current 3-month volatility of WLK?

As of today, WLK 3-month volatility is 54.11%

What 3-month volatility category does WLK fall into?

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

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

WLK 3-month volatility reached a 1-year high of 58.59% on July 1, 2025

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

WLK 3-month volatility reached a 1-year low of 26.62% on April 1, 2025

What is the current 1-year volatility of WLK?

As of today, WLK 1-year volatility is 51.38%

What 1-year volatility category does WLK fall into?

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

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

WLK 1-year volatility reached a 1-year high of 51.52% on March 24, 2026

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

WLK 1-year volatility reached a 1-year low of 25.34% on April 1, 2025

WLK Stock Volatility History & Chart Since 2004

10-Day

40.78%

March 30, 2026

Summary

Current Value: As of today, WLK 10-day volatility is 40.78%, up +2.00% on March 30, 2026
Value Category: Based on its current 10-day historical volatility, WLK falls into the high volatility category
1-Year High: WLK 10-day volatility reached a 1-year high of 97.53% on April 11, 2025
1-Year Low: WLK 10-day volatility reached a 1-year low of 19.59% on September 25, 2025

10-Day Volatility Chart

Performance

WLK Performance
Metric	Date	Value	1D	1M	3M	YTD	1Y	3Y	5Y
10-Day Volatility	Mar 30, 26	40.78%	+2.0%	-46.1%	+65.7%	+59.6%	+32.0%	+29.4%	-7.0%
1-Month Volatility	Mar 30, 26	43.61%	-1.3%	-35.5%	+35.9%	+33.7%	+42.5%	+23.9%	+7.4%
3-Month Volatility	Mar 30, 26	54.11%	+1.0%	+5.4%	+28.3%	+28.0%	+101.4%	+58.2%	+48.6%
1-Year Volatility	Mar 30, 26	51.38%	-0.2%	+1.3%	+12.6%	+12.6%	+102.3%	+31.5%	+2.2%
14-Day RSI	Mar 30, 26	64.25	+5.3%	-1.4%	+3.9%	+10.6%	+88.9%	+24.4%	+20.8%
Beta	Mar 30, 26	1.26	-0.8%	0.0%	+4.1%	+4.1%	+48.2%	+21.1%	-14.3%
ATR	Mar 30, 26	$4.90	-1.6%	-6.4%	+99.8%	+104.2%	+49.7%	+34.3%	+37.6%
Price	Mar 30, 26	$116.00	+2.4%	+10.1%	+54.9%	+56.9%	+17.0%	+2.0%	+28.4%
200-Day SMA	Mar 30, 26	$82.94	+0.2%	+4.5%	+3.6%	+3.8%	-36.3%	-20.0%	+15.1%
50-Day SMA	Mar 30, 26	$99.73	+0.6%	+15.7%	+44.3%	+44.3%	-9.8%	-14.7%	+15.1%

10-Day Volatility History

Date	Value	Change
Mar 30, 2026	40.78%	+59.6%
Dec 31, 2025	25.55%	+56.0%
Dec 31, 2024	16.38%	+12.5%
Dec 31, 2023	14.56%	-33.2%
Dec 31, 2022	21.81%	-23.7%
Dec 31, 2021	28.60%	+74.7%
Dec 31, 2020	16.37%	-2.2%
Dec 31, 2019	16.73%	-53.1%
Dec 31, 2018	35.68%	+160.2%
Dec 31, 2017	13.71%	-13.9%
Dec 31, 2016	15.92%	-56.2%
Dec 31, 2015	36.32%	-4.5%

Date	Value	Change
Dec 31, 2014	38.03%	+146.9%
Dec 31, 2013	15.40%	-34.6%
Dec 31, 2012	23.56%	-31.2%
Dec 31, 2011	34.26%	+292.0%
Dec 31, 2010	8.74%	-74.2%
Dec 31, 2009	33.93%	-43.1%
Dec 31, 2008	59.65%	+46.5%
Dec 31, 2007	40.72%	+23.5%
Dec 31, 2006	32.96%	+63.5%
Dec 31, 2005	20.16%	-52.8%
Dec 31, 2004	42.75%	-

FAQ

What is the current 10-day volatility of WLK?
As of today, WLK 10-day volatility is 40.78%
What 10-day volatility category does WLK fall into?
Based on its current 10-day historical volatility, WLK falls into the high volatility category
What is WLK 10-day volatility 1-year high?
WLK 10-day volatility reached a 1-year high of 97.53% on April 11, 2025
What is WLK 10-day volatility 1-year low?
WLK 10-day volatility reached a 1-year low of 19.59% on September 25, 2025

1-Month

43.61%

March 30, 2026

Summary

Current Value: As of today, WLK 1-month volatility is 43.61%, down -1.27% on March 30, 2026
Value Category: Based on its current 1-month historical volatility, WLK falls into the high volatility category
1-Year High: WLK 1-month volatility reached a 1-year high of 81.25% on May 2, 2025
1-Year Low: WLK 1-month volatility reached a 1-year low of 29.62% on April 1, 2025

Performance

WLK Performance
Metric	Date	Value	1D	1M	3M	YTD	1Y	3Y	5Y
1-Month Volatility	Mar 30, 26	43.61%	-1.3%	-35.5%	+35.9%	+33.7%	+42.5%	+23.9%	+7.4%
10-Day Volatility	Mar 30, 26	40.78%	+2.0%	-46.1%	+65.7%	+59.6%	+32.0%	+29.4%	-7.0%
3-Month Volatility	Mar 30, 26	54.11%	+1.0%	+5.4%	+28.3%	+28.0%	+101.4%	+58.2%	+48.6%
1-Year Volatility	Mar 30, 26	51.38%	-0.2%	+1.3%	+12.6%	+12.6%	+102.3%	+31.5%	+2.2%
14-Day RSI	Mar 30, 26	64.25	+5.3%	-1.4%	+3.9%	+10.6%	+88.9%	+24.4%	+20.8%
Beta	Mar 30, 26	1.26	-0.8%	0.0%	+4.1%	+4.1%	+48.2%	+21.1%	-14.3%
ATR	Mar 30, 26	$4.90	-1.6%	-6.4%	+99.8%	+104.2%	+49.7%	+34.3%	+37.6%
Price	Mar 30, 26	$116.00	+2.4%	+10.1%	+54.9%	+56.9%	+17.0%	+2.0%	+28.4%
200-Day SMA	Mar 30, 26	$82.94	+0.2%	+4.5%	+3.6%	+3.8%	-36.3%	-20.0%	+15.1%
50-Day SMA	Mar 30, 26	$99.73	+0.6%	+15.7%	+44.3%	+44.3%	-9.8%	-14.7%	+15.1%

1-Month Volatility History

Date	Value	Change
Mar 30, 2026	43.61%	+36.6%
Dec 31, 2025	31.92%	+81.4%
Dec 31, 2024	17.60%	-42.8%
Dec 31, 2023	30.76%	+24.8%
Dec 31, 2022	24.65%	-21.5%
Dec 31, 2021	31.40%	+28.4%
Dec 31, 2020	24.46%	+9.7%
Dec 31, 2019	22.30%	-39.0%
Dec 31, 2018	36.55%	+159.0%
Dec 31, 2017	14.11%	-23.6%
Dec 31, 2016	18.47%	-46.7%
Dec 31, 2015	34.63%	-21.7%

Date	Value	Change
Dec 31, 2014	44.21%	+134.9%
Dec 31, 2013	18.82%	-23.7%
Dec 31, 2012	24.67%	-26.8%
Dec 31, 2011	33.70%	+85.3%
Dec 31, 2010	18.19%	-43.5%
Dec 31, 2009	32.19%	-49.0%
Dec 31, 2008	63.17%	+28.5%
Dec 31, 2007	49.15%	+54.9%
Dec 31, 2006	31.74%	+17.1%
Dec 31, 2005	27.10%	-49.2%
Dec 31, 2004	53.37%	-

FAQ

What is the current 1-month volatility of WLK?
As of today, WLK 1-month volatility is 43.61%
What 1-month volatility category does WLK fall into?
Based on its current 1-month historical volatility, WLK falls into the high volatility category
What is WLK 1-month volatility 1-year high?
WLK 1-month volatility reached a 1-year high of 81.25% on May 2, 2025
What is WLK 1-month volatility 1-year low?
WLK 1-month volatility reached a 1-year low of 29.62% on April 1, 2025

3-Month

54.11%

March 30, 2026

Summary

Current Value: As of today, WLK 3-month volatility is 54.11%, up +1.01% on March 30, 2026
Value Category: Based on its current 3-month historical volatility, WLK falls into the high volatility category
1-Year High: WLK 3-month volatility reached a 1-year high of 58.59% on July 1, 2025
1-Year Low: WLK 3-month volatility reached a 1-year low of 26.62% on April 1, 2025

Performance

WLK Performance
Metric	Date	Value	1D	1M	3M	YTD	1Y	3Y	5Y
3-Month Volatility	Mar 30, 26	54.11%	+1.0%	+5.4%	+28.3%	+28.0%	+101.4%	+58.2%	+48.6%
10-Day Volatility	Mar 30, 26	40.78%	+2.0%	-46.1%	+65.7%	+59.6%	+32.0%	+29.4%	-7.0%
1-Month Volatility	Mar 30, 26	43.61%	-1.3%	-35.5%	+35.9%	+33.7%	+42.5%	+23.9%	+7.4%
1-Year Volatility	Mar 30, 26	51.38%	-0.2%	+1.3%	+12.6%	+12.6%	+102.3%	+31.5%	+2.2%
14-Day RSI	Mar 30, 26	64.25	+5.3%	-1.4%	+3.9%	+10.6%	+88.9%	+24.4%	+20.8%
Beta	Mar 30, 26	1.26	-0.8%	0.0%	+4.1%	+4.1%	+48.2%	+21.1%	-14.3%
ATR	Mar 30, 26	$4.90	-1.6%	-6.4%	+99.8%	+104.2%	+49.7%	+34.3%	+37.6%
Price	Mar 30, 26	$116.00	+2.4%	+10.1%	+54.9%	+56.9%	+17.0%	+2.0%	+28.4%
200-Day SMA	Mar 30, 26	$82.94	+0.2%	+4.5%	+3.6%	+3.8%	-36.3%	-20.0%	+15.1%
50-Day SMA	Mar 30, 26	$99.73	+0.6%	+15.7%	+44.3%	+44.3%	-9.8%	-14.7%	+15.1%

3-Month Volatility History

Date	Value	Change
Mar 30, 2026	54.11%	+29.0%
Dec 31, 2025	41.93%	+118.2%
Dec 31, 2024	19.22%	-33.9%
Dec 31, 2023	29.09%	-31.5%
Dec 31, 2022	42.46%	+25.8%
Dec 31, 2021	33.74%	-12.2%
Dec 31, 2020	38.45%	+8.2%
Dec 31, 2019	35.53%	-0.6%
Dec 31, 2018	35.73%	+74.0%
Dec 31, 2017	20.54%	-32.9%
Dec 31, 2016	30.62%	-7.4%
Dec 31, 2015	33.05%	-25.0%

Date	Value	Change
Dec 31, 2014	44.04%	+122.0%
Dec 31, 2013	19.84%	-42.3%
Dec 31, 2012	34.39%	-34.5%
Dec 31, 2011	52.50%	+48.2%
Dec 31, 2010	35.43%	+5.3%
Dec 31, 2009	33.64%	-64.9%
Dec 31, 2008	95.84%	+131.1%
Dec 31, 2007	41.48%	+14.9%
Dec 31, 2006	36.11%	+11.3%
Dec 31, 2005	32.44%	-21.2%
Dec 31, 2004	41.15%	-

FAQ

What is the current 3-month volatility of WLK?
As of today, WLK 3-month volatility is 54.11%
What 3-month volatility category does WLK fall into?
Based on its current 3-month historical volatility, WLK falls into the high volatility category
What is WLK 3-month volatility 1-year high?
WLK 3-month volatility reached a 1-year high of 58.59% on July 1, 2025
What is WLK 3-month volatility 1-year low?
WLK 3-month volatility reached a 1-year low of 26.62% on April 1, 2025

1-Year

51.38%

March 30, 2026

Summary

Current Value: As of today, WLK 1-year volatility is 51.38%, down -0.17% on March 30, 2026
Value Category: Based on its current 1-year historical volatility, WLK falls into the high volatility category
1-Year High: WLK 1-year volatility reached a 1-year high of 51.52% on March 24, 2026
1-Year Low: WLK 1-year volatility reached a 1-year low of 25.34% on April 1, 2025

Performance

WLK Performance
Metric	Date	Value	1D	1M	3M	YTD	1Y	3Y	5Y
1-Year Volatility	Mar 30, 26	51.38%	-0.2%	+1.3%	+12.6%	+12.6%	+102.3%	+31.5%	+2.2%
10-Day Volatility	Mar 30, 26	40.78%	+2.0%	-46.1%	+65.7%	+59.6%	+32.0%	+29.4%	-7.0%
1-Month Volatility	Mar 30, 26	43.61%	-1.3%	-35.5%	+35.9%	+33.7%	+42.5%	+23.9%	+7.4%
3-Month Volatility	Mar 30, 26	54.11%	+1.0%	+5.4%	+28.3%	+28.0%	+101.4%	+58.2%	+48.6%
1-Year Volatility	Mar 30, 26	51.38%	-0.2%	+1.3%	+12.6%	+12.6%	+102.3%	+31.5%	+2.2%
14-Day RSI	Mar 30, 26	64.25	+5.3%	-1.4%	+3.9%	+10.6%	+88.9%	+24.4%	+20.8%
Beta	Mar 30, 26	1.26	-0.8%	0.0%	+4.1%	+4.1%	+48.2%	+21.1%	-14.3%
ATR	Mar 30, 26	$4.90	-1.6%	-6.4%	+99.8%	+104.2%	+49.7%	+34.3%	+37.6%
Price	Mar 30, 26	$116.00	+2.4%	+10.1%	+54.9%	+56.9%	+17.0%	+2.0%	+28.4%
200-Day SMA	Mar 30, 26	$82.94	+0.2%	+4.5%	+3.6%	+3.8%	-36.3%	-20.0%	+15.1%
50-Day SMA	Mar 30, 26	$99.73	+0.6%	+15.7%	+44.3%	+44.3%	-9.8%	-14.7%	+15.1%

1-Year Volatility History

Date	Value	Change
Mar 30, 2026	51.38%	+12.6%
Dec 31, 2025	45.62%	+76.5%
Dec 31, 2024	25.84%	-15.2%
Dec 31, 2023	30.47%	-21.3%
Dec 31, 2022	38.74%	+14.4%
Dec 31, 2021	33.85%	-49.7%
Dec 31, 2020	67.25%	+75.7%
Dec 31, 2019	38.28%	+23.6%
Dec 31, 2018	30.97%	+26.3%
Dec 31, 2017	24.52%	-34.1%
Dec 31, 2016	37.20%	+7.3%
Dec 31, 2015	34.68%	+11.8%

Date	Value	Change
Dec 31, 2014	31.01%	+11.7%
Dec 31, 2013	27.75%	-25.6%
Dec 31, 2012	37.29%	-26.7%
Dec 31, 2011	50.84%	+1.4%
Dec 31, 2010	50.14%	-1.3%
Dec 31, 2009	50.81%	-32.8%
Dec 31, 2008	75.62%	+90.4%
Dec 31, 2007	39.72%	+12.2%
Dec 31, 2006	35.41%	-10.0%
Dec 31, 2005	39.35%	+6.0%
Dec 31, 2004	37.13%	-

FAQ

What is the current 1-year volatility of WLK?
As of today, WLK 1-year volatility is 51.38%
What 1-year volatility category does WLK fall into?
Based on its current 1-year historical volatility, WLK falls into the high volatility category
What is WLK 1-year volatility 1-year high?
WLK 1-year volatility reached a 1-year high of 51.52% on March 24, 2026
What is WLK 1-year volatility 1-year low?
WLK 1-year volatility reached a 1-year low of 25.34% on April 1, 2025

Data Sources & References

WLK Official Website www.westlake.com
Most Recent Quarterly Report (10-Q) www.sec.gov/Archives/edgar/data/1262823/000126282326000016/0001262823-26-000016-index.htm
Most Recent Annual Report (10-K) www.sec.gov/Archives/edgar/data/1262823/000126282326000016/0001262823-26-000016-index.htm
WLK Profile on Yahoo Finance finance.yahoo.com/quote/WLK
WLK Profile on NASDAQ.com www.nasdaq.com/market-activity/stocks/wlk