What is the current 10-day volatility of NGG?

As of today, NGG 10-day volatility is 17.99%

What 10-day volatility category does NGG fall into?

Based on its current 10-day historical volatility, NGG falls into the low volatility category

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

NGG 10-day volatility reached a 1-year high of 52.76% on May 29, 2026

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

NGG 10-day volatility reached a 1-year low of 9.10% on December 12, 2025

What is the current 1-month volatility of NGG?

As of today, NGG 1-month volatility is 16.87%

What 1-month volatility category does NGG fall into?

Based on its current 1-month historical volatility, NGG falls into the low volatility category

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

NGG 1-month volatility reached a 1-year high of 40.32% on May 29, 2026

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

NGG 1-month volatility reached a 1-year low of 11.91% on December 31, 2025

What is the current 3-month volatility of NGG?

As of today, NGG 3-month volatility is 19.14%

What 3-month volatility category does NGG fall into?

Based on its current 3-month historical volatility, NGG falls into the low volatility category

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

NGG 3-month volatility reached a 1-year high of 30.60% on June 17, 2026

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

NGG 3-month volatility reached a 1-year low of 14.55% on December 31, 2025

What is the current 1-year volatility of NGG?

As of today, NGG 1-year volatility is 21.61%

What 1-year volatility category does NGG fall into?

Based on its current 1-year historical volatility, NGG falls into the low volatility category

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

NGG 1-year volatility reached a 1-year high of 23.14% on September 30, 2025

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

NGG 1-year volatility reached a 1-year low of 20.00% on May 12, 2026

NGG Stock Volatility History & Chart Since 2005

10-Day

17.99%

September 30, 2026

Summary

Current Value: As of today, NGG 10-day volatility is 17.99%, down -3.07% on September 30, 2026
Value Category: Based on its current 10-day historical volatility, NGG falls into the low volatility category
1-Year High: NGG 10-day volatility reached a 1-year high of 52.76% on May 29, 2026
1-Year Low: NGG 10-day volatility reached a 1-year low of 9.10% on December 12, 2025

10-Day Volatility Chart

Performance

NGG Performance
Metric	Date	Value	1D	1M	3M	YTD	1Y	3Y	5Y
10-Day Volatility	Sep 30, 26	17.99%	-3.1%	+11.7%	-14.9%	+38.3%	+15.8%	-1.6%	+19.1%
1-Month Volatility	Sep 30, 26	16.87%	+2.1%	+20.8%	-15.3%	+41.0%	-11.1%	-9.4%	-10.3%
3-Month Volatility	Sep 30, 26	19.14%	+0.5%	-4.9%	-32.6%	+30.5%	-5.4%	+3.3%	+29.6%
1-Year Volatility	Sep 30, 26	21.61%	0.0%	-0.6%	-1.0%	-4.3%	-6.6%	-2.7%	+20.4%
14-Day RSI	Sep 30, 26	41.80	+19.4%	-0.4%	-17.3%	-27.3%	-31.1%	+10.6%	+84.2%
Beta	Sep 30, 26	0.29	-3.3%	0.0%	+11.5%	+383.3%	+107.1%	-55.4%	-34.1%
ATR	Sep 30, 26	$1.19	+2.0%	-0.2%	-19.9%	+46.4%	+35.2%	+24.2%	+32.0%
Price	Sep 30, 26	$75.82	+1.2%	-4.5%	-8.5%	-2.0%	+4.3%	+25.1%	+27.1%
200-Day SMA	Sep 30, 26	$83.14	+0.0%	+0.1%	+2.0%	+15.1%	+23.5%	+27.0%	+33.0%
50-Day SMA	Sep 30, 26	$78.94	-0.2%	-3.1%	-6.3%	+3.5%	+11.0%	+24.4%	+21.6%
20-Day SMA	Sep 30, 26	$76.44	-0.2%	-5.0%	-6.3%	+0.2%	+8.0%	+21.7%	+19.1%

10-Day Volatility History

Date	Value	Change
Sep 30, 2026	17.99%	+38.3%
Dec 31, 2025	13.01%	-28.9%
Dec 31, 2024	18.31%	+13.0%
Dec 31, 2023	16.20%	-2.5%
Dec 31, 2022	16.62%	+39.7%
Dec 31, 2021	11.90%	-47.4%
Dec 31, 2020	22.64%	+295.1%
Dec 31, 2019	5.73%	-90.2%
Dec 31, 2018	58.74%	+658.9%
Dec 31, 2017	7.74%	-34.5%
Dec 31, 2016	11.81%	-34.0%

Date	Value	Change
Dec 31, 2015	17.90%	-17.1%
Dec 31, 2014	21.59%	+81.3%
Dec 31, 2013	11.91%	+9.4%
Dec 31, 2012	10.89%	-50.8%
Dec 31, 2011	22.12%	+54.8%
Dec 31, 2010	14.29%	+2.1%
Dec 31, 2009	14.00%	-33.5%
Dec 31, 2008	21.06%	+54.1%
Dec 31, 2007	13.67%	-20.7%
Dec 31, 2006	17.24%	+7.5%
Dec 31, 2005	16.03%	-

FAQ

What is the current 10-day volatility of NGG?: As of today, NGG 10-day volatility is 17.99%
What 10-day volatility category does NGG fall into?: Based on its current 10-day historical volatility, NGG falls into the low volatility category
What is NGG 10-day volatility 1-year high?: NGG 10-day volatility reached a 1-year high of 52.76% on May 29, 2026
What is NGG 10-day volatility 1-year low?: NGG 10-day volatility reached a 1-year low of 9.10% on December 12, 2025

1-Month

16.87%

September 30, 2026

Summary

Current Value: As of today, NGG 1-month volatility is 16.87%, up +2.06% on September 30, 2026
Value Category: Based on its current 1-month historical volatility, NGG falls into the low volatility category
1-Year High: NGG 1-month volatility reached a 1-year high of 40.32% on May 29, 2026
1-Year Low: NGG 1-month volatility reached a 1-year low of 11.91% on December 31, 2025

Performance

NGG Performance
Metric	Date	Value	1D	1M	3M	YTD	1Y	3Y	5Y
1-Month Volatility	Sep 30, 26	16.87%	+2.1%	+20.8%	-15.3%	+41.0%	-11.1%	-9.4%	-10.3%
10-Day Volatility	Sep 30, 26	17.99%	-3.1%	+11.7%	-14.9%	+38.3%	+15.8%	-1.6%	+19.1%
3-Month Volatility	Sep 30, 26	19.14%	+0.5%	-4.9%	-32.6%	+30.5%	-5.4%	+3.3%	+29.6%
1-Year Volatility	Sep 30, 26	21.61%	0.0%	-0.6%	-1.0%	-4.3%	-6.6%	-2.7%	+20.4%
14-Day RSI	Sep 30, 26	41.80	+19.4%	-0.4%	-17.3%	-27.3%	-31.1%	+10.6%	+84.2%
Beta	Sep 30, 26	0.29	-3.3%	0.0%	+11.5%	+383.3%	+107.1%	-55.4%	-34.1%
ATR	Sep 30, 26	$1.19	+2.0%	-0.2%	-19.9%	+46.4%	+35.2%	+24.2%	+32.0%
Price	Sep 30, 26	$75.82	+1.2%	-4.5%	-8.5%	-2.0%	+4.3%	+25.1%	+27.1%
200-Day SMA	Sep 30, 26	$83.14	+0.0%	+0.1%	+2.0%	+15.1%	+23.5%	+27.0%	+33.0%
50-Day SMA	Sep 30, 26	$78.94	-0.2%	-3.1%	-6.3%	+3.5%	+11.0%	+24.4%	+21.6%
20-Day SMA	Sep 30, 26	$76.44	-0.2%	-5.0%	-6.3%	+0.2%	+8.0%	+21.7%	+19.1%

1-Month Volatility History

Date	Value	Change
Sep 30, 2026	16.87%	+41.6%
Dec 31, 2025	11.91%	-27.9%
Dec 31, 2024	16.52%	-15.4%
Dec 31, 2023	19.53%	+20.9%
Dec 31, 2022	16.16%	+37.1%
Dec 31, 2021	11.79%	-48.3%
Dec 31, 2020	22.81%	-5.0%
Dec 31, 2019	24.01%	-46.1%
Dec 31, 2018	44.51%	+471.4%
Dec 31, 2017	7.79%	-41.6%
Dec 31, 2016	13.34%	-9.7%

Date	Value	Change
Dec 31, 2015	14.78%	-25.5%
Dec 31, 2014	19.85%	+34.4%
Dec 31, 2013	14.77%	+55.6%
Dec 31, 2012	9.49%	-56.5%
Dec 31, 2011	21.84%	+24.8%
Dec 31, 2010	17.50%	+7.0%
Dec 31, 2009	16.36%	-72.7%
Dec 31, 2008	59.90%	+284.2%
Dec 31, 2007	15.59%	-19.6%
Dec 31, 2006	19.40%	-1.9%
Dec 31, 2005	19.77%	-

FAQ

What is the current 1-month volatility of NGG?: As of today, NGG 1-month volatility is 16.87%
What 1-month volatility category does NGG fall into?: Based on its current 1-month historical volatility, NGG falls into the low volatility category
What is NGG 1-month volatility 1-year high?: NGG 1-month volatility reached a 1-year high of 40.32% on May 29, 2026
What is NGG 1-month volatility 1-year low?: NGG 1-month volatility reached a 1-year low of 11.91% on December 31, 2025

3-Month

19.14%

September 30, 2026

Summary

Current Value: As of today, NGG 3-month volatility is 19.14%, up +0.53% on September 30, 2026
Value Category: Based on its current 3-month historical volatility, NGG falls into the low volatility category
1-Year High: NGG 3-month volatility reached a 1-year high of 30.60% on June 17, 2026
1-Year Low: NGG 3-month volatility reached a 1-year low of 14.55% on December 31, 2025

Performance

NGG Performance
Metric	Date	Value	1D	1M	3M	YTD	1Y	3Y	5Y
3-Month Volatility	Sep 30, 26	19.14%	+0.5%	-4.9%	-32.6%	+30.5%	-5.4%	+3.3%	+29.6%
10-Day Volatility	Sep 30, 26	17.99%	-3.1%	+11.7%	-14.9%	+38.3%	+15.8%	-1.6%	+19.1%
1-Month Volatility	Sep 30, 26	16.87%	+2.1%	+20.8%	-15.3%	+41.0%	-11.1%	-9.4%	-10.3%
1-Year Volatility	Sep 30, 26	21.61%	0.0%	-0.6%	-1.0%	-4.3%	-6.6%	-2.7%	+20.4%
14-Day RSI	Sep 30, 26	41.80	+19.4%	-0.4%	-17.3%	-27.3%	-31.1%	+10.6%	+84.2%
Beta	Sep 30, 26	0.29	-3.3%	0.0%	+11.5%	+383.3%	+107.1%	-55.4%	-34.1%
ATR	Sep 30, 26	$1.19	+2.0%	-0.2%	-19.9%	+46.4%	+35.2%	+24.2%	+32.0%
Price	Sep 30, 26	$75.82	+1.2%	-4.5%	-8.5%	-2.0%	+4.3%	+25.1%	+27.1%
200-Day SMA	Sep 30, 26	$83.14	+0.0%	+0.1%	+2.0%	+15.1%	+23.5%	+27.0%	+33.0%
50-Day SMA	Sep 30, 26	$78.94	-0.2%	-3.1%	-6.3%	+3.5%	+11.0%	+24.4%	+21.6%
20-Day SMA	Sep 30, 26	$76.44	-0.2%	-5.0%	-6.3%	+0.2%	+8.0%	+21.7%	+19.1%

3-Month Volatility History

Date	Value	Change
Sep 30, 2026	19.14%	+31.5%
Dec 31, 2025	14.55%	-14.3%
Dec 31, 2024	16.98%	-13.8%
Dec 31, 2023	19.70%	-32.2%
Dec 31, 2022	29.05%	+119.6%
Dec 31, 2021	13.23%	-39.7%
Dec 31, 2020	21.94%	+9.6%
Dec 31, 2019	20.01%	-31.9%
Dec 31, 2018	29.39%	+168.6%
Dec 31, 2017	10.94%	-44.8%
Dec 31, 2016	19.82%	+11.9%

Date	Value	Change
Dec 31, 2015	17.71%	+2.3%
Dec 31, 2014	17.32%	+37.1%
Dec 31, 2013	12.63%	+6.4%
Dec 31, 2012	11.87%	-42.3%
Dec 31, 2011	20.57%	+7.0%
Dec 31, 2010	19.23%	-3.7%
Dec 31, 2009	19.97%	-77.2%
Dec 31, 2008	87.60%	+342.0%
Dec 31, 2007	19.82%	-6.0%
Dec 31, 2006	21.09%	+15.3%
Dec 31, 2005	18.29%	-

FAQ

What is the current 3-month volatility of NGG?: As of today, NGG 3-month volatility is 19.14%
What 3-month volatility category does NGG fall into?: Based on its current 3-month historical volatility, NGG falls into the low volatility category
What is NGG 3-month volatility 1-year high?: NGG 3-month volatility reached a 1-year high of 30.60% on June 17, 2026
What is NGG 3-month volatility 1-year low?: NGG 3-month volatility reached a 1-year low of 14.55% on December 31, 2025

1-Year

21.61%

September 30, 2026

Summary

Current Value: As of today, NGG 1-year volatility is 21.61%, unchanged on September 30, 2026
Value Category: Based on its current 1-year historical volatility, NGG falls into the low volatility category
1-Year High: NGG 1-year volatility reached a 1-year high of 23.14% on September 30, 2025
1-Year Low: NGG 1-year volatility reached a 1-year low of 20.00% on May 12, 2026

Performance

NGG Performance
Metric	Date	Value	1D	1M	3M	YTD	1Y	3Y	5Y
1-Year Volatility	Sep 30, 26	21.61%	0.0%	-0.6%	-1.0%	-4.3%	-6.6%	-2.7%	+20.4%
10-Day Volatility	Sep 30, 26	17.99%	-3.1%	+11.7%	-14.9%	+38.3%	+15.8%	-1.6%	+19.1%
1-Month Volatility	Sep 30, 26	16.87%	+2.1%	+20.8%	-15.3%	+41.0%	-11.1%	-9.4%	-10.3%
3-Month Volatility	Sep 30, 26	19.14%	+0.5%	-4.9%	-32.6%	+30.5%	-5.4%	+3.3%	+29.6%
1-Year Volatility	Sep 30, 26	21.61%	0.0%	-0.6%	-1.0%	-4.3%	-6.6%	-2.7%	+20.4%
14-Day RSI	Sep 30, 26	41.80	+19.4%	-0.4%	-17.3%	-27.3%	-31.1%	+10.6%	+84.2%
Beta	Sep 30, 26	0.29	-3.3%	0.0%	+11.5%	+383.3%	+107.1%	-55.4%	-34.1%
ATR	Sep 30, 26	$1.19	+2.0%	-0.2%	-19.9%	+46.4%	+35.2%	+24.2%	+32.0%
Price	Sep 30, 26	$75.82	+1.2%	-4.5%	-8.5%	-2.0%	+4.3%	+25.1%	+27.1%
200-Day SMA	Sep 30, 26	$83.14	+0.0%	+0.1%	+2.0%	+15.1%	+23.5%	+27.0%	+33.0%
50-Day SMA	Sep 30, 26	$78.94	-0.2%	-3.1%	-6.3%	+3.5%	+11.0%	+24.4%	+21.6%
20-Day SMA	Sep 30, 26	$76.44	-0.2%	-5.0%	-6.3%	+0.2%	+8.0%	+21.7%	+19.1%

1-Year Volatility History

Date	Value	Change
Sep 30, 2026	21.61%	-4.3%
Dec 31, 2025	22.58%	-3.3%
Dec 31, 2024	23.34%	+20.1%
Dec 31, 2023	19.44%	-21.9%
Dec 31, 2022	24.88%	+57.5%
Dec 31, 2021	15.80%	-59.0%
Dec 31, 2020	38.51%	+117.3%
Dec 31, 2019	17.72%	-17.5%
Dec 31, 2018	21.48%	+46.7%
Dec 31, 2017	14.64%	-25.9%
Dec 31, 2016	19.75%	+6.4%

Date	Value	Change
Dec 31, 2015	18.57%	+29.1%
Dec 31, 2014	14.38%	-3.4%
Dec 31, 2013	14.89%	-4.1%
Dec 31, 2012	15.53%	-31.5%
Dec 31, 2011	22.68%	-9.1%
Dec 31, 2010	24.96%	-20.9%
Dec 31, 2009	31.57%	-36.2%
Dec 31, 2008	49.51%	+155.3%
Dec 31, 2007	19.39%	+7.7%
Dec 31, 2006	18.00%	-5.3%
Dec 31, 2005	19.00%	-

FAQ

What is the current 1-year volatility of NGG?: As of today, NGG 1-year volatility is 21.61%
What 1-year volatility category does NGG fall into?: Based on its current 1-year historical volatility, NGG falls into the low volatility category
What is NGG 1-year volatility 1-year high?: NGG 1-year volatility reached a 1-year high of 23.14% on September 30, 2025
What is NGG 1-year volatility 1-year low?: NGG 1-year volatility reached a 1-year low of 20.00% on May 12, 2026

Data Sources & References

NGG Official Website www.nationalgrid.com
Most Recent Quarterly Report (10-Q) www.sec.gov/Archives/edgar/data/1004315/000100431525000012/0001004315-25-000012-index.htm
NGG Profile on Yahoo Finance finance.yahoo.com/quote/NGG
NGG Profile on NASDAQ.com www.nasdaq.com/market-activity/stocks/ngg