What is the current 10-day volatility of PSX?

As of today, PSX 10-day volatility is 31.59%

What 10-day volatility category does PSX fall into?

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

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

PSX 10-day volatility reached a 1-year high of 51.20% on January 16, 2026

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

PSX 10-day volatility reached a 1-year low of 10.31% on October 9, 2025

What is the current 1-month volatility of PSX?

As of today, PSX 1-month volatility is 26.68%

What 1-month volatility category does PSX fall into?

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

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

PSX 1-month volatility reached a 1-year high of 44.63% on January 12, 2026

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

PSX 1-month volatility reached a 1-year low of 20.16% on October 9, 2025

What is the current 3-month volatility of PSX?

As of today, PSX 3-month volatility is 30.40%

What 3-month volatility category does PSX fall into?

Based on its current 3-month historical volatility, PSX falls into the moderate volatility category

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

PSX 3-month volatility reached a 1-year high of 35.46% on May 26, 2026

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

PSX 3-month volatility reached a 1-year low of 22.94% on November 10, 2025

What is the current 1-year volatility of PSX?

As of today, PSX 1-year volatility is 31.34%

What 1-year volatility category does PSX fall into?

Based on its current 1-year historical volatility, PSX falls into the moderate volatility category

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

PSX 1-year volatility reached a 1-year high of 36.90% on January 16, 2026

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

PSX 1-year volatility reached a 1-year low of 29.56% on June 8, 2026

Phillips 66 (PSX) Stock Volatility History & Chart

10-Day

31.59%

September 30, 2026

Summary

Current Value: As of today, PSX 10-day volatility is 31.59%, up +3.74% on September 30, 2026
Value Category: Based on its current 10-day historical volatility, PSX falls into the moderate volatility category
1-Year High: PSX 10-day volatility reached a 1-year high of 51.20% on January 16, 2026
1-Year Low: PSX 10-day volatility reached a 1-year low of 10.31% on October 9, 2025

10-Day Volatility Chart

Performance

PSX Performance
Metric	Date	Value	1D	1M	3M	YTD	1Y	3Y	5Y
10-Day Volatility	Sep 30, 26	31.59%	+3.7%	+30.5%	-0.8%	+142.1%	+17.5%	+29.5%	-20.8%
1-Month Volatility	Sep 30, 26	26.68%	-1.0%	-18.5%	-6.5%	-8.0%	+19.9%	+14.6%	-19.6%
3-Month Volatility	Sep 30, 26	30.40%	-3.1%	-2.7%	-7.2%	+12.1%	+18.6%	+43.5%	-18.2%
1-Year Volatility	Sep 30, 26	31.34%	+0.1%	+1.0%	+4.2%	-12.3%	-12.5%	+1.1%	-30.6%
14-Day RSI	Sep 30, 26	54.27	+6.9%	-27.4%	+6.1%	+42.0%	-2.0%	-0.1%	-10.4%
Beta	Sep 30, 26	-0.23	0.0%	+8.0%	-360.0%	-120.7%	-120.9%	-135.9%	-116.0%
ATR	Sep 30, 26	$8.28	-0.2%	+21.9%	+52.4%	+179.0%	+153.7%	+202.1%	+287.1%
Price	Sep 30, 26	$255.31	+1.2%	+1.3%	+46.3%	+97.8%	+89.7%	+112.5%	+251.8%
200-Day SMA	Sep 30, 26	$182.79	+0.3%	+7.1%	+19.4%	+46.1%	+51.3%	+76.3%	+134.9%
50-Day SMA	Sep 30, 26	$238.44	+0.4%	+14.0%	+37.0%	+75.9%	+85.7%	+106.6%	+238.9%
20-Day SMA	Sep 30, 26	$259.27	+0.1%	+11.4%	+48.1%	+92.7%	+94.7%	+115.1%	+282.5%

10-Day Volatility History

Date	Value	Change
Oct 1, 2026	31.59%	+142.1%
Dec 31, 2025	13.05%	-42.0%
Dec 31, 2024	22.50%	+46.3%
Dec 31, 2023	15.38%	-49.3%
Dec 31, 2022	30.35%	-1.7%
Dec 31, 2021	30.89%	+19.9%
Dec 31, 2020	25.76%	+120.9%
Dec 31, 2019	11.66%	-77.1%

Date	Value	Change
Dec 31, 2018	50.97%	+309.7%
Dec 31, 2017	12.44%	+36.1%
Dec 31, 2016	9.14%	-66.7%
Dec 31, 2015	27.47%	+5.2%
Dec 31, 2014	26.11%	+25.0%
Dec 31, 2013	20.89%	-30.9%
Dec 31, 2012	30.21%	-

FAQ

What is the current 10-day volatility of PSX?: As of today, PSX 10-day volatility is 31.59%
What 10-day volatility category does PSX fall into?: Based on its current 10-day historical volatility, PSX falls into the moderate volatility category
What is PSX 10-day volatility 1-year high?: PSX 10-day volatility reached a 1-year high of 51.20% on January 16, 2026
What is PSX 10-day volatility 1-year low?: PSX 10-day volatility reached a 1-year low of 10.31% on October 9, 2025

1-Month

26.68%

September 30, 2026

Summary

Current Value: As of today, PSX 1-month volatility is 26.68%, down -1.04% on September 30, 2026
Value Category: Based on its current 1-month historical volatility, PSX falls into the moderate volatility category
1-Year High: PSX 1-month volatility reached a 1-year high of 44.63% on January 12, 2026
1-Year Low: PSX 1-month volatility reached a 1-year low of 20.16% on October 9, 2025

Performance

PSX Performance
Metric	Date	Value	1D	1M	3M	YTD	1Y	3Y	5Y
1-Month Volatility	Sep 30, 26	26.68%	-1.0%	-18.5%	-6.5%	-8.0%	+19.9%	+14.6%	-19.6%
10-Day Volatility	Sep 30, 26	31.59%	+3.7%	+30.5%	-0.8%	+142.1%	+17.5%	+29.5%	-20.8%
3-Month Volatility	Sep 30, 26	30.40%	-3.1%	-2.7%	-7.2%	+12.1%	+18.6%	+43.5%	-18.2%
1-Year Volatility	Sep 30, 26	31.34%	+0.1%	+1.0%	+4.2%	-12.3%	-12.5%	+1.1%	-30.6%
14-Day RSI	Sep 30, 26	54.27	+6.9%	-27.4%	+6.1%	+42.0%	-2.0%	-0.1%	-10.4%
Beta	Sep 30, 26	-0.23	0.0%	+8.0%	-360.0%	-120.7%	-120.9%	-135.9%	-116.0%
ATR	Sep 30, 26	$8.28	-0.2%	+21.9%	+52.4%	+179.0%	+153.7%	+202.1%	+287.1%
Price	Sep 30, 26	$255.31	+1.2%	+1.3%	+46.3%	+97.8%	+89.7%	+112.5%	+251.8%
200-Day SMA	Sep 30, 26	$182.79	+0.3%	+7.1%	+19.4%	+46.1%	+51.3%	+76.3%	+134.9%
50-Day SMA	Sep 30, 26	$238.44	+0.4%	+14.0%	+37.0%	+75.9%	+85.7%	+106.6%	+238.9%
20-Day SMA	Sep 30, 26	$259.27	+0.1%	+11.4%	+48.1%	+92.7%	+94.7%	+115.1%	+282.5%

1-Month Volatility History

Date	Value	Change
Oct 1, 2026	26.68%	-9.3%
Dec 31, 2025	29.43%	+3.6%
Dec 31, 2024	28.42%	+58.0%
Dec 31, 2023	17.99%	-40.2%
Dec 31, 2022	30.06%	-2.7%
Dec 31, 2021	30.89%	-20.2%
Dec 31, 2020	38.71%	+199.6%
Dec 31, 2019	12.92%	-67.0%

Date	Value	Change
Dec 31, 2018	39.14%	+227.8%
Dec 31, 2017	11.94%	-25.1%
Dec 31, 2016	15.94%	-48.3%
Dec 31, 2015	30.85%	-10.0%
Dec 31, 2014	34.26%	+68.4%
Dec 31, 2013	20.34%	-28.0%
Dec 31, 2012	28.26%	-

FAQ

What is the current 1-month volatility of PSX?: As of today, PSX 1-month volatility is 26.68%
What 1-month volatility category does PSX fall into?: Based on its current 1-month historical volatility, PSX falls into the moderate volatility category
What is PSX 1-month volatility 1-year high?: PSX 1-month volatility reached a 1-year high of 44.63% on January 12, 2026
What is PSX 1-month volatility 1-year low?: PSX 1-month volatility reached a 1-year low of 20.16% on October 9, 2025

3-Month

30.40%

September 30, 2026

Summary

Current Value: As of today, PSX 3-month volatility is 30.40%, down -3.09% on September 30, 2026
Value Category: Based on its current 3-month historical volatility, PSX falls into the moderate volatility category
1-Year High: PSX 3-month volatility reached a 1-year high of 35.46% on May 26, 2026
1-Year Low: PSX 3-month volatility reached a 1-year low of 22.94% on November 10, 2025

Performance

PSX Performance
Metric	Date	Value	1D	1M	3M	YTD	1Y	3Y	5Y
3-Month Volatility	Sep 30, 26	30.40%	-3.1%	-2.7%	-7.2%	+12.1%	+18.6%	+43.5%	-18.2%
10-Day Volatility	Sep 30, 26	31.59%	+3.7%	+30.5%	-0.8%	+142.1%	+17.5%	+29.5%	-20.8%
1-Month Volatility	Sep 30, 26	26.68%	-1.0%	-18.5%	-6.5%	-8.0%	+19.9%	+14.6%	-19.6%
1-Year Volatility	Sep 30, 26	31.34%	+0.1%	+1.0%	+4.2%	-12.3%	-12.5%	+1.1%	-30.6%
14-Day RSI	Sep 30, 26	54.27	+6.9%	-27.4%	+6.1%	+42.0%	-2.0%	-0.1%	-10.4%
Beta	Sep 30, 26	-0.23	0.0%	+8.0%	-360.0%	-120.7%	-120.9%	-135.9%	-116.0%
ATR	Sep 30, 26	$8.28	-0.2%	+21.9%	+52.4%	+179.0%	+153.7%	+202.1%	+287.1%
Price	Sep 30, 26	$255.31	+1.2%	+1.3%	+46.3%	+97.8%	+89.7%	+112.5%	+251.8%
200-Day SMA	Sep 30, 26	$182.79	+0.3%	+7.1%	+19.4%	+46.1%	+51.3%	+76.3%	+134.9%
50-Day SMA	Sep 30, 26	$238.44	+0.4%	+14.0%	+37.0%	+75.9%	+85.7%	+106.6%	+238.9%
20-Day SMA	Sep 30, 26	$259.27	+0.1%	+11.4%	+48.1%	+92.7%	+94.7%	+115.1%	+282.5%

3-Month Volatility History

Date	Value	Change
Oct 1, 2026	30.40%	+12.6%
Dec 31, 2025	26.99%	-0.7%
Dec 31, 2024	27.18%	+7.0%
Dec 31, 2023	25.41%	-25.4%
Dec 31, 2022	34.08%	-7.3%
Dec 31, 2021	36.76%	-44.8%
Dec 31, 2020	66.65%	+248.6%
Dec 31, 2019	19.12%	-49.3%

Date	Value	Change
Dec 31, 2018	37.69%	+166.4%
Dec 31, 2017	14.15%	-14.0%
Dec 31, 2016	16.45%	-37.2%
Dec 31, 2015	26.18%	-30.7%
Dec 31, 2014	37.79%	+83.1%
Dec 31, 2013	20.64%	-35.4%
Dec 31, 2012	31.94%	-

FAQ

What is the current 3-month volatility of PSX?: As of today, PSX 3-month volatility is 30.40%
What 3-month volatility category does PSX fall into?: Based on its current 3-month historical volatility, PSX falls into the moderate volatility category
What is PSX 3-month volatility 1-year high?: PSX 3-month volatility reached a 1-year high of 35.46% on May 26, 2026
What is PSX 3-month volatility 1-year low?: PSX 3-month volatility reached a 1-year low of 22.94% on November 10, 2025

1-Year

31.34%

September 30, 2026

Summary

Current Value: As of today, PSX 1-year volatility is 31.34%, up +0.06% on September 30, 2026
Value Category: Based on its current 1-year historical volatility, PSX falls into the moderate volatility category
1-Year High: PSX 1-year volatility reached a 1-year high of 36.90% on January 16, 2026
1-Year Low: PSX 1-year volatility reached a 1-year low of 29.56% on June 8, 2026

Performance

PSX Performance
Metric	Date	Value	1D	1M	3M	YTD	1Y	3Y	5Y
1-Year Volatility	Sep 30, 26	31.34%	+0.1%	+1.0%	+4.2%	-12.3%	-12.5%	+1.1%	-30.6%
10-Day Volatility	Sep 30, 26	31.59%	+3.7%	+30.5%	-0.8%	+142.1%	+17.5%	+29.5%	-20.8%
1-Month Volatility	Sep 30, 26	26.68%	-1.0%	-18.5%	-6.5%	-8.0%	+19.9%	+14.6%	-19.6%
3-Month Volatility	Sep 30, 26	30.40%	-3.1%	-2.7%	-7.2%	+12.1%	+18.6%	+43.5%	-18.2%
1-Year Volatility	Sep 30, 26	31.34%	+0.1%	+1.0%	+4.2%	-12.3%	-12.5%	+1.1%	-30.6%
14-Day RSI	Sep 30, 26	54.27	+6.9%	-27.4%	+6.1%	+42.0%	-2.0%	-0.1%	-10.4%
Beta	Sep 30, 26	-0.23	0.0%	+8.0%	-360.0%	-120.7%	-120.9%	-135.9%	-116.0%
ATR	Sep 30, 26	$8.28	-0.2%	+21.9%	+52.4%	+179.0%	+153.7%	+202.1%	+287.1%
Price	Sep 30, 26	$255.31	+1.2%	+1.3%	+46.3%	+97.8%	+89.7%	+112.5%	+251.8%
200-Day SMA	Sep 30, 26	$182.79	+0.3%	+7.1%	+19.4%	+46.1%	+51.3%	+76.3%	+134.9%
50-Day SMA	Sep 30, 26	$238.44	+0.4%	+14.0%	+37.0%	+75.9%	+85.7%	+106.6%	+238.9%
20-Day SMA	Sep 30, 26	$259.27	+0.1%	+11.4%	+48.1%	+92.7%	+94.7%	+115.1%	+282.5%

1-Year Volatility History

Date	Value	Change
Oct 1, 2026	31.34%	-12.3%
Dec 31, 2025	35.74%	+39.4%
Dec 31, 2024	25.63%	-10.9%
Dec 31, 2023	28.76%	-27.1%
Dec 31, 2022	39.45%	+11.6%
Dec 31, 2021	35.35%	-49.3%
Dec 31, 2020	69.69%	+227.6%
Dec 31, 2019	21.27%	-19.1%

Date	Value	Change
Dec 31, 2018	26.29%	+74.6%
Dec 31, 2017	15.06%	-37.4%
Dec 31, 2016	24.05%	-15.8%
Dec 31, 2015	28.55%	+12.8%
Dec 31, 2014	25.30%	-11.3%
Dec 31, 2013	28.52%	-16.5%
Dec 31, 2012	34.16%	-

FAQ

What is the current 1-year volatility of PSX?: As of today, PSX 1-year volatility is 31.34%
What 1-year volatility category does PSX fall into?: Based on its current 1-year historical volatility, PSX falls into the moderate volatility category
What is PSX 1-year volatility 1-year high?: PSX 1-year volatility reached a 1-year high of 36.90% on January 16, 2026
What is PSX 1-year volatility 1-year low?: PSX 1-year volatility reached a 1-year low of 29.56% on June 8, 2026

Data Sources & References

PSX Official Website www.phillips66.com
Most Recent Annual Report (10-K) www.sec.gov/Archives/edgar/data/1534701/000153470126000006/0001534701-26-000006-index.htm
PSX Profile on Yahoo Finance finance.yahoo.com/quote/PSX
PSX Profile on NASDAQ.com www.nasdaq.com/market-activity/stocks/psx