What is the current 10-day volatility of CMCSA?

As of today, CMCSA 10-day volatility is 38.77%

What 10-day volatility category does CMCSA fall into?

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

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

CMCSA 10-day volatility reached a 1-year high of 84.66% on April 29, 2026

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

CMCSA 10-day volatility reached a 1-year low of 8.74% on September 16, 2025

What is the current 1-month volatility of CMCSA?

As of today, CMCSA 1-month volatility is 34.25%

What 1-month volatility category does CMCSA fall into?

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

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

CMCSA 1-month volatility reached a 1-year high of 60.13% on May 8, 2026

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

CMCSA 1-month volatility reached a 1-year low of 11.35% on September 30, 2025

What is the current 3-month volatility of CMCSA?

As of today, CMCSA 3-month volatility is 36.45%

What 3-month volatility category does CMCSA fall into?

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

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

CMCSA 3-month volatility reached a 1-year high of 41.08% on July 15, 2026

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

CMCSA 3-month volatility reached a 1-year low of 18.88% on October 27, 2025

What is the current 1-year volatility of CMCSA?

As of today, CMCSA 1-year volatility is 32.07%

What 1-year volatility category does CMCSA fall into?

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

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

CMCSA 1-year volatility reached a 1-year high of 32.07% on September 16, 2026

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

CMCSA 1-year volatility reached a 1-year low of 23.56% on April 15, 2026

CMCSA Stock Volatility History & Chart Since 1980

10-Day

38.77%

September 15, 2026

Summary

Current Value: As of today, CMCSA 10-day volatility is 38.77%, up +0.36% on September 15, 2026
Value Category: Based on its current 10-day historical volatility, CMCSA falls into the moderate volatility category
1-Year High: CMCSA 10-day volatility reached a 1-year high of 84.66% on April 29, 2026
1-Year Low: CMCSA 10-day volatility reached a 1-year low of 8.74% on September 16, 2025

10-Day Volatility Chart

Performance

CMCSA Performance
Metric	Date	Value	1D	1M	3M	YTD	1Y	3Y	5Y
10-Day Volatility	Sep 15, 26	38.77%	+0.4%	+81.5%	+11.5%	+101.6%	+343.6%	+80.1%	-9.1%
1-Month Volatility	Sep 15, 26	34.25%	-1.2%	-16.7%	+37.9%	+14.6%	+132.7%	+93.8%	+14.3%
3-Month Volatility	Sep 15, 26	36.45%	+0.3%	+8.0%	-5.5%	+30.8%	+68.5%	+94.1%	+69.7%
1-Year Volatility	Sep 15, 26	32.07%	+0.3%	+4.0%	+12.4%	+17.8%	+14.7%	+23.8%	+29.0%
14-Day RSI	Sep 15, 26	39.08	-7.7%	-40.1%	+9.3%	-37.1%	+12.8%	-22.1%	-4.5%
Beta	Sep 15, 26	0.15	+7.1%	+25.0%	+25.0%	-74.6%	-76.9%	-84.4%	-86.4%
ATR	Sep 15, 26	$0.71	-2.1%	-8.1%	+4.7%	+16.2%	+6.7%	-5.9%	-40.5%
Price	Sep 16, 26	$24.10	-1.3%	-7.9%	+1.9%	-14.0%	-20.4%	-43.3%	-55.1%
200-Day SMA	Sep 15, 26	$26.91	-0.0%	+0.2%	-3.9%	-11.4%	-19.1%	-28.0%	-48.0%
50-Day SMA	Sep 15, 26	$25.00	+0.1%	+4.8%	-4.5%	-5.0%	-20.9%	-40.4%	-54.6%
20-Day SMA	Sep 15, 26	$26.22	-0.2%	+7.4%	+7.3%	-2.5%	-16.8%	-38.7%	-53.0%

10-Day Volatility History

Date	Value	Change
Sep 16, 2026	38.77%	+101.6%
Dec 31, 2025	19.23%	-8.1%
Dec 31, 2024	20.93%	+180.6%
Dec 31, 2023	7.46%	-59.2%
Dec 31, 2022	18.29%	+42.7%
Dec 31, 2021	12.82%	-27.4%
Dec 31, 2020	17.66%	+74.9%
Dec 31, 2019	10.10%	-62.2%
Dec 31, 2018	26.69%	+19.2%
Dec 31, 2017	22.39%	+92.0%
Dec 31, 2016	11.66%	-31.0%
Dec 31, 2015	16.90%	+15.1%
Dec 31, 2014	14.68%	+19.3%
Dec 31, 2013	12.31%	-49.6%
Dec 31, 2012	24.44%	+18.3%
Dec 31, 2011	20.66%	+24.5%
Dec 31, 2010	16.59%	+9.8%
Dec 31, 2009	15.11%	-62.1%
Dec 31, 2008	39.85%	+214.3%
Dec 31, 2007	12.68%	+33.2%
Dec 31, 2006	9.52%	+7.7%
Dec 31, 2005	8.84%	-54.6%
Dec 31, 2004	19.45%	+19.8%
Dec 31, 2003	16.24%	-53.7%

Date	Value	Change
Dec 31, 2002	35.10%	-7.2%
Dec 31, 2001	37.81%	-18.8%
Dec 31, 2000	46.54%	-25.0%
Dec 31, 1999	62.06%	+258.5%
Dec 31, 1998	17.31%	-63.2%
Dec 31, 1997	47.08%	+200.6%
Dec 31, 1996	15.66%	-22.9%
Dec 31, 1995	20.31%	-25.8%
Dec 31, 1994	27.39%	+29.5%
Dec 31, 1993	21.15%	+10.4%
Dec 31, 1992	19.16%	-62.6%
Dec 31, 1991	51.19%	+18.6%
Dec 31, 1990	43.18%	+20.2%
Dec 31, 1989	35.93%	+6.5%
Dec 31, 1988	33.74%	-48.0%
Dec 31, 1987	64.93%	+327.7%
Dec 31, 1986	15.18%	-42.4%
Dec 31, 1985	26.35%	+64.4%
Dec 31, 1984	16.03%	-35.2%
Dec 31, 1983	24.75%	-2.1%
Dec 31, 1982	25.29%	+64.1%
Dec 31, 1981	15.41%	-62.3%
Dec 31, 1980	40.91%	-

FAQ

What is the current 10-day volatility of CMCSA?: As of today, CMCSA 10-day volatility is 38.77%
What 10-day volatility category does CMCSA fall into?: Based on its current 10-day historical volatility, CMCSA falls into the moderate volatility category
What is CMCSA 10-day volatility 1-year high?: CMCSA 10-day volatility reached a 1-year high of 84.66% on April 29, 2026
What is CMCSA 10-day volatility 1-year low?: CMCSA 10-day volatility reached a 1-year low of 8.74% on September 16, 2025

1-Month

34.25%

September 15, 2026

Summary

Current Value: As of today, CMCSA 1-month volatility is 34.25%, down -1.21% on September 15, 2026
Value Category: Based on its current 1-month historical volatility, CMCSA falls into the moderate volatility category
1-Year High: CMCSA 1-month volatility reached a 1-year high of 60.13% on May 8, 2026
1-Year Low: CMCSA 1-month volatility reached a 1-year low of 11.35% on September 30, 2025

Performance

CMCSA Performance
Metric	Date	Value	1D	1M	3M	YTD	1Y	3Y	5Y
1-Month Volatility	Sep 15, 26	34.25%	-1.2%	-16.7%	+37.9%	+14.6%	+132.7%	+93.8%	+14.3%
10-Day Volatility	Sep 15, 26	38.77%	+0.4%	+81.5%	+11.5%	+101.6%	+343.6%	+80.1%	-9.1%
3-Month Volatility	Sep 15, 26	36.45%	+0.3%	+8.0%	-5.5%	+30.8%	+68.5%	+94.1%	+69.7%
1-Year Volatility	Sep 15, 26	32.07%	+0.3%	+4.0%	+12.4%	+17.8%	+14.7%	+23.8%	+29.0%
14-Day RSI	Sep 15, 26	39.08	-7.7%	-40.1%	+9.3%	-37.1%	+12.8%	-22.1%	-4.5%
Beta	Sep 15, 26	0.15	+7.1%	+25.0%	+25.0%	-74.6%	-76.9%	-84.4%	-86.4%
ATR	Sep 15, 26	$0.71	-2.1%	-8.1%	+4.7%	+16.2%	+6.7%	-5.9%	-40.5%
Price	Sep 16, 26	$24.10	-1.3%	-7.9%	+1.9%	-14.0%	-20.4%	-43.3%	-55.1%
200-Day SMA	Sep 15, 26	$26.91	-0.0%	+0.2%	-3.9%	-11.4%	-19.1%	-28.0%	-48.0%
50-Day SMA	Sep 15, 26	$25.00	+0.1%	+4.8%	-4.5%	-5.0%	-20.9%	-40.4%	-54.6%
20-Day SMA	Sep 15, 26	$26.22	-0.2%	+7.4%	+7.3%	-2.5%	-16.8%	-38.7%	-53.0%

1-Month Volatility History

Date	Value	Change
Sep 16, 2026	34.25%	+16.7%
Dec 31, 2025	29.35%	-22.0%
Dec 31, 2024	37.61%	+84.9%
Dec 31, 2023	20.34%	-19.5%
Dec 31, 2022	25.26%	-20.0%
Dec 31, 2021	31.57%	+105.3%
Dec 31, 2020	15.38%	-12.1%
Dec 31, 2019	17.50%	-25.7%
Dec 31, 2018	23.56%	-25.6%
Dec 31, 2017	31.65%	+167.5%
Dec 31, 2016	11.83%	-47.2%
Dec 31, 2015	22.39%	+56.7%
Dec 31, 2014	14.29%	+8.1%
Dec 31, 2013	13.22%	-29.7%
Dec 31, 2012	18.81%	-20.1%
Dec 31, 2011	23.54%	+6.4%
Dec 31, 2010	22.13%	-36.1%
Dec 31, 2009	34.64%	-36.3%
Dec 31, 2008	54.42%	+12.5%
Dec 31, 2007	48.37%	+272.7%
Dec 31, 2006	12.98%	+7.5%
Dec 31, 2005	12.08%	-31.4%
Dec 31, 2004	17.60%	+34.8%
Dec 31, 2003	13.06%	-71.8%

Date	Value	Change
Dec 31, 2002	46.33%	+50.2%
Dec 31, 2001	30.84%	-46.7%
Dec 31, 2000	57.90%	-14.3%
Dec 31, 1999	67.58%	+112.6%
Dec 31, 1998	31.79%	-34.4%
Dec 31, 1997	48.48%	+142.2%
Dec 31, 1996	20.02%	+12.4%
Dec 31, 1995	17.81%	-60.9%
Dec 31, 1994	45.56%	+26.7%
Dec 31, 1993	35.95%	+77.4%
Dec 31, 1992	20.26%	-55.9%
Dec 31, 1991	45.90%	+12.8%
Dec 31, 1990	40.70%	+26.0%
Dec 31, 1989	32.31%	-10.4%
Dec 31, 1988	36.06%	-51.7%
Dec 31, 1987	74.69%	+412.3%
Dec 31, 1986	14.58%	-62.0%
Dec 31, 1985	38.36%	+102.7%
Dec 31, 1984	18.92%	-15.6%
Dec 31, 1983	22.43%	-57.5%
Dec 31, 1982	52.82%	+317.2%
Dec 31, 1981	12.66%	-62.8%
Dec 31, 1980	34.05%	-

FAQ

What is the current 1-month volatility of CMCSA?: As of today, CMCSA 1-month volatility is 34.25%
What 1-month volatility category does CMCSA fall into?: Based on its current 1-month historical volatility, CMCSA falls into the moderate volatility category
What is CMCSA 1-month volatility 1-year high?: CMCSA 1-month volatility reached a 1-year high of 60.13% on May 8, 2026
What is CMCSA 1-month volatility 1-year low?: CMCSA 1-month volatility reached a 1-year low of 11.35% on September 30, 2025

3-Month

36.45%

September 15, 2026

Summary

Current Value: As of today, CMCSA 3-month volatility is 36.45%, up +0.33% on September 15, 2026
Value Category: Based on its current 3-month historical volatility, CMCSA falls into the moderate volatility category
1-Year High: CMCSA 3-month volatility reached a 1-year high of 41.08% on July 15, 2026
1-Year Low: CMCSA 3-month volatility reached a 1-year low of 18.88% on October 27, 2025

Performance

CMCSA Performance
Metric	Date	Value	1D	1M	3M	YTD	1Y	3Y	5Y
3-Month Volatility	Sep 15, 26	36.45%	+0.3%	+8.0%	-5.5%	+30.8%	+68.5%	+94.1%	+69.7%
10-Day Volatility	Sep 15, 26	38.77%	+0.4%	+81.5%	+11.5%	+101.6%	+343.6%	+80.1%	-9.1%
1-Month Volatility	Sep 15, 26	34.25%	-1.2%	-16.7%	+37.9%	+14.6%	+132.7%	+93.8%	+14.3%
1-Year Volatility	Sep 15, 26	32.07%	+0.3%	+4.0%	+12.4%	+17.8%	+14.7%	+23.8%	+29.0%
14-Day RSI	Sep 15, 26	39.08	-7.7%	-40.1%	+9.3%	-37.1%	+12.8%	-22.1%	-4.5%
Beta	Sep 15, 26	0.15	+7.1%	+25.0%	+25.0%	-74.6%	-76.9%	-84.4%	-86.4%
ATR	Sep 15, 26	$0.71	-2.1%	-8.1%	+4.7%	+16.2%	+6.7%	-5.9%	-40.5%
Price	Sep 16, 26	$24.10	-1.3%	-7.9%	+1.9%	-14.0%	-20.4%	-43.3%	-55.1%
200-Day SMA	Sep 15, 26	$26.91	-0.0%	+0.2%	-3.9%	-11.4%	-19.1%	-28.0%	-48.0%
50-Day SMA	Sep 15, 26	$25.00	+0.1%	+4.8%	-4.5%	-5.0%	-20.9%	-40.4%	-54.6%
20-Day SMA	Sep 15, 26	$26.22	-0.2%	+7.4%	+7.3%	-2.5%	-16.8%	-38.7%	-53.0%

3-Month Volatility History

Date	Value	Change
Sep 16, 2026	36.45%	+31.1%
Dec 31, 2025	27.80%	-6.8%
Dec 31, 2024	29.84%	+15.1%
Dec 31, 2023	25.92%	-9.2%
Dec 31, 2022	28.56%	+4.6%
Dec 31, 2021	27.30%	-1.5%
Dec 31, 2020	27.71%	+55.3%
Dec 31, 2019	17.84%	-38.0%
Dec 31, 2018	28.79%	+12.7%
Dec 31, 2017	25.55%	+57.4%
Dec 31, 2016	16.23%	-15.7%
Dec 31, 2015	19.26%	-11.4%
Dec 31, 2014	21.73%	+21.9%
Dec 31, 2013	17.82%	-2.4%
Dec 31, 2012	18.25%	-42.1%
Dec 31, 2011	31.50%	+54.0%
Dec 31, 2010	20.45%	-39.0%
Dec 31, 2009	33.50%	-64.6%
Dec 31, 2008	94.72%	+136.7%
Dec 31, 2007	40.02%	+142.0%
Dec 31, 2006	16.54%	-26.2%
Dec 31, 2005	22.40%	+23.8%
Dec 31, 2004	18.09%	-17.5%
Dec 31, 2003	21.93%	-66.6%

Date	Value	Change
Dec 31, 2002	65.61%	+141.7%
Dec 31, 2001	27.15%	-44.5%
Dec 31, 2000	48.88%	-20.0%
Dec 31, 1999	61.07%	+41.3%
Dec 31, 1998	43.21%	+9.1%
Dec 31, 1997	39.61%	+38.1%
Dec 31, 1996	28.68%	-5.1%
Dec 31, 1995	30.23%	-29.0%
Dec 31, 1994	42.60%	-23.3%
Dec 31, 1993	55.54%	+56.7%
Dec 31, 1992	35.45%	-17.6%
Dec 31, 1991	43.01%	-23.0%
Dec 31, 1990	55.83%	+69.6%
Dec 31, 1989	32.91%	+5.8%
Dec 31, 1988	31.11%	-62.5%
Dec 31, 1987	82.97%	+259.8%
Dec 31, 1986	23.06%	-19.5%
Dec 31, 1985	28.66%	+43.4%
Dec 31, 1984	19.98%	-43.0%
Dec 31, 1983	35.06%	-9.2%
Dec 31, 1982	38.61%	+18.9%
Dec 31, 1981	32.48%	-6.4%
Dec 31, 1980	34.71%	-

FAQ

What is the current 3-month volatility of CMCSA?: As of today, CMCSA 3-month volatility is 36.45%
What 3-month volatility category does CMCSA fall into?: Based on its current 3-month historical volatility, CMCSA falls into the moderate volatility category
What is CMCSA 3-month volatility 1-year high?: CMCSA 3-month volatility reached a 1-year high of 41.08% on July 15, 2026
What is CMCSA 3-month volatility 1-year low?: CMCSA 3-month volatility reached a 1-year low of 18.88% on October 27, 2025

1-Year

32.07%

September 15, 2026

Summary

Current Value: As of today, CMCSA 1-year volatility is 32.07%, up +0.25% on September 15, 2026
Value Category: Based on its current 1-year historical volatility, CMCSA falls into the moderate volatility category
1-Year High: CMCSA 1-year volatility reached a 1-year high of 32.07% on September 16, 2026
1-Year Low: CMCSA 1-year volatility reached a 1-year low of 23.56% on April 15, 2026

Performance

CMCSA Performance
Metric	Date	Value	1D	1M	3M	YTD	1Y	3Y	5Y
1-Year Volatility	Sep 15, 26	32.07%	+0.3%	+4.0%	+12.4%	+17.8%	+14.7%	+23.8%	+29.0%
10-Day Volatility	Sep 15, 26	38.77%	+0.4%	+81.5%	+11.5%	+101.6%	+343.6%	+80.1%	-9.1%
1-Month Volatility	Sep 15, 26	34.25%	-1.2%	-16.7%	+37.9%	+14.6%	+132.7%	+93.8%	+14.3%
3-Month Volatility	Sep 15, 26	36.45%	+0.3%	+8.0%	-5.5%	+30.8%	+68.5%	+94.1%	+69.7%
1-Year Volatility	Sep 15, 26	32.07%	+0.3%	+4.0%	+12.4%	+17.8%	+14.7%	+23.8%	+29.0%
14-Day RSI	Sep 15, 26	39.08	-7.7%	-40.1%	+9.3%	-37.1%	+12.8%	-22.1%	-4.5%
Beta	Sep 15, 26	0.15	+7.1%	+25.0%	+25.0%	-74.6%	-76.9%	-84.4%	-86.4%
ATR	Sep 15, 26	$0.71	-2.1%	-8.1%	+4.7%	+16.2%	+6.7%	-5.9%	-40.5%
Price	Sep 16, 26	$24.10	-1.3%	-7.9%	+1.9%	-14.0%	-20.4%	-43.3%	-55.1%
200-Day SMA	Sep 15, 26	$26.91	-0.0%	+0.2%	-3.9%	-11.4%	-19.1%	-28.0%	-48.0%
50-Day SMA	Sep 15, 26	$25.00	+0.1%	+4.8%	-4.5%	-5.0%	-20.9%	-40.4%	-54.6%
20-Day SMA	Sep 15, 26	$26.22	-0.2%	+7.4%	+7.3%	-2.5%	-16.8%	-38.7%	-53.0%

1-Year Volatility History

Date	Value	Change
Sep 16, 2026	32.07%	+17.8%
Dec 31, 2025	27.23%	+13.2%
Dec 31, 2024	24.05%	+0.0%
Dec 31, 2023	24.04%	-19.2%
Dec 31, 2022	29.77%	+21.6%
Dec 31, 2021	24.48%	-36.0%
Dec 31, 2020	38.27%	+100.2%
Dec 31, 2019	19.12%	-31.7%
Dec 31, 2018	28.00%	+44.5%
Dec 31, 2017	19.38%	+13.1%
Dec 31, 2016	17.14%	-17.1%
Dec 31, 2015	20.67%	+11.1%
Dec 31, 2014	18.61%	-6.4%
Dec 31, 2013	19.88%	+8.6%
Dec 31, 2012	18.31%	-36.0%
Dec 31, 2011	28.59%	+6.7%
Dec 31, 2010	26.80%	-39.3%
Dec 31, 2009	44.15%	-24.9%
Dec 31, 2008	58.79%	+106.7%
Dec 31, 2007	28.44%	+47.6%
Dec 31, 2006	19.27%	+11.1%
Dec 31, 2005	17.34%	-24.4%
Dec 31, 2004	22.95%	-35.6%
Dec 31, 2003	35.63%	-41.1%

Date	Value	Change
Dec 31, 2002	60.46%	+107.3%
Dec 31, 2001	29.16%	-49.9%
Dec 31, 2000	58.15%	+2.1%
Dec 31, 1999	56.96%	+33.9%
Dec 31, 1998	42.55%	+13.2%
Dec 31, 1997	37.58%	+33.3%
Dec 31, 1996	28.20%	-16.2%
Dec 31, 1995	33.67%	-20.6%
Dec 31, 1994	42.41%	-16.1%
Dec 31, 1993	50.52%	+45.4%
Dec 31, 1992	34.74%	-12.9%
Dec 31, 1991	39.88%	-19.5%
Dec 31, 1990	49.55%	+55.2%
Dec 31, 1989	31.92%	-6.5%
Dec 31, 1988	34.13%	-31.4%
Dec 31, 1987	49.77%	+80.3%
Dec 31, 1986	27.61%	+2.6%
Dec 31, 1985	26.90%	-7.9%
Dec 31, 1984	29.21%	-18.7%
Dec 31, 1983	35.91%	+9.6%
Dec 31, 1982	32.77%	-4.9%
Dec 31, 1981	34.46%	-23.0%
Dec 31, 1980	44.74%	-

FAQ

What is the current 1-year volatility of CMCSA?: As of today, CMCSA 1-year volatility is 32.07%
What 1-year volatility category does CMCSA fall into?: Based on its current 1-year historical volatility, CMCSA falls into the moderate volatility category
What is CMCSA 1-year volatility 1-year high?: CMCSA 1-year volatility reached a 1-year high of 32.07% on September 16, 2026
What is CMCSA 1-year volatility 1-year low?: CMCSA 1-year volatility reached a 1-year low of 23.56% on April 15, 2026

Data Sources & References

CMCSA Official Website corporate.comcast.com
Most Recent Annual Report (10-K) www.sec.gov/Archives/edgar/data/1166691/000162828026004994/0001628280-26-004994-index.htm
CMCSA Profile on Yahoo Finance finance.yahoo.com/quote/CMCSA
CMCSA Profile on NASDAQ.com www.nasdaq.com/market-activity/stocks/cmcsa