What is the current 10-day volatility of NGG?

As of today, NGG 10-day volatility is 11.25%

What 10-day volatility category does NGG fall into?

Based on its current 10-day historical volatility, NGG falls into the very 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 14.12%

What 1-month volatility category does NGG fall into?

Based on its current 1-month historical volatility, NGG falls into the very 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 19.19%

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 21.38%

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 23.15% on September 26, 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

11.25%

September 8, 2026

Summary

Current Value: As of today, NGG 10-day volatility is 11.25%, down -10.64% on September 8, 2026
Value Category: Based on its current 10-day historical volatility, NGG falls into the very 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 8, 26	11.25%	-10.6%	-39.8%	-59.6%	-13.5%	-53.4%	-36.9%	-25.0%
1-Month Volatility	Sep 8, 26	14.12%	+2.8%	-26.2%	-62.8%	+18.1%	-28.6%	-17.2%	+21.4%
3-Month Volatility	Sep 8, 26	19.19%	-1.5%	-31.3%	-36.6%	+30.8%	-11.7%	+5.7%	+55.6%
1-Year Volatility	Sep 8, 26	21.38%	+0.1%	-1.6%	-2.6%	-5.3%	-7.3%	-9.7%	+16.4%
14-Day RSI	Sep 8, 26	36.42	-0.8%	-22.5%	-11.8%	-36.7%	-24.7%	-27.5%	-23.6%
Beta	Sep 8, 26	0.27	0.0%	-6.9%	0.0%	+350.0%	+107.7%	-60.3%	-35.7%
ATR	Sep 8, 26	$1.11	-1.3%	-17.3%	-35.0%	+37.3%	+11.3%	+30.8%	+75.1%
Price	Sep 8, 26	$78.06	-0.1%	-3.5%	-3.7%	+0.9%	+10.9%	+23.6%	+20.0%
200-Day SMA	Sep 8, 26	$83.09	0.0%	+0.4%	+2.9%	+15.0%	+24.6%	+27.1%	+33.8%
50-Day SMA	Sep 8, 26	$81.10	-0.1%	-0.8%	-5.6%	+6.3%	+13.9%	+25.5%	+24.5%
20-Day SMA	Sep 8, 26	$79.96	-0.1%	-2.0%	-4.4%	+4.9%	+13.3%	+28.5%	+21.9%

10-Day Volatility History

Date	Value	Change
Sep 9, 2026	11.25%	-13.5%
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 11.25%
What 10-day volatility category does NGG fall into?: Based on its current 10-day historical volatility, NGG falls into the very 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

14.12%

September 8, 2026

Summary

Current Value: As of today, NGG 1-month volatility is 14.12%, up +2.84% on September 8, 2026
Value Category: Based on its current 1-month historical volatility, NGG falls into the very 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 8, 26	14.12%	+2.8%	-26.2%	-62.8%	+18.1%	-28.6%	-17.2%	+21.4%
10-Day Volatility	Sep 8, 26	11.25%	-10.6%	-39.8%	-59.6%	-13.5%	-53.4%	-36.9%	-25.0%
3-Month Volatility	Sep 8, 26	19.19%	-1.5%	-31.3%	-36.6%	+30.8%	-11.7%	+5.7%	+55.6%
1-Year Volatility	Sep 8, 26	21.38%	+0.1%	-1.6%	-2.6%	-5.3%	-7.3%	-9.7%	+16.4%
14-Day RSI	Sep 8, 26	36.42	-0.8%	-22.5%	-11.8%	-36.7%	-24.7%	-27.5%	-23.6%
Beta	Sep 8, 26	0.27	0.0%	-6.9%	0.0%	+350.0%	+107.7%	-60.3%	-35.7%
ATR	Sep 8, 26	$1.11	-1.3%	-17.3%	-35.0%	+37.3%	+11.3%	+30.8%	+75.1%
Price	Sep 8, 26	$78.06	-0.1%	-3.5%	-3.7%	+0.9%	+10.9%	+23.6%	+20.0%
200-Day SMA	Sep 8, 26	$83.09	0.0%	+0.4%	+2.9%	+15.0%	+24.6%	+27.1%	+33.8%
50-Day SMA	Sep 8, 26	$81.10	-0.1%	-0.8%	-5.6%	+6.3%	+13.9%	+25.5%	+24.5%
20-Day SMA	Sep 8, 26	$79.96	-0.1%	-2.0%	-4.4%	+4.9%	+13.3%	+28.5%	+21.9%

1-Month Volatility History

Date	Value	Change
Sep 9, 2026	14.12%	+18.6%
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 14.12%
What 1-month volatility category does NGG fall into?: Based on its current 1-month historical volatility, NGG falls into the very 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

19.19%

September 8, 2026

Summary

Current Value: As of today, NGG 3-month volatility is 19.19%, down -1.54% on September 8, 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 8, 26	19.19%	-1.5%	-31.3%	-36.6%	+30.8%	-11.7%	+5.7%	+55.6%
10-Day Volatility	Sep 8, 26	11.25%	-10.6%	-39.8%	-59.6%	-13.5%	-53.4%	-36.9%	-25.0%
1-Month Volatility	Sep 8, 26	14.12%	+2.8%	-26.2%	-62.8%	+18.1%	-28.6%	-17.2%	+21.4%
1-Year Volatility	Sep 8, 26	21.38%	+0.1%	-1.6%	-2.6%	-5.3%	-7.3%	-9.7%	+16.4%
14-Day RSI	Sep 8, 26	36.42	-0.8%	-22.5%	-11.8%	-36.7%	-24.7%	-27.5%	-23.6%
Beta	Sep 8, 26	0.27	0.0%	-6.9%	0.0%	+350.0%	+107.7%	-60.3%	-35.7%
ATR	Sep 8, 26	$1.11	-1.3%	-17.3%	-35.0%	+37.3%	+11.3%	+30.8%	+75.1%
Price	Sep 8, 26	$78.06	-0.1%	-3.5%	-3.7%	+0.9%	+10.9%	+23.6%	+20.0%
200-Day SMA	Sep 8, 26	$83.09	0.0%	+0.4%	+2.9%	+15.0%	+24.6%	+27.1%	+33.8%
50-Day SMA	Sep 8, 26	$81.10	-0.1%	-0.8%	-5.6%	+6.3%	+13.9%	+25.5%	+24.5%
20-Day SMA	Sep 8, 26	$79.96	-0.1%	-2.0%	-4.4%	+4.9%	+13.3%	+28.5%	+21.9%

3-Month Volatility History

Date	Value	Change
Sep 9, 2026	19.19%	+31.9%
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 19.19%
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

21.38%

September 8, 2026

Summary

Current Value: As of today, NGG 1-year volatility is 21.38%, up +0.09% on September 8, 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 23.15% on September 26, 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 8, 26	21.38%	+0.1%	-1.6%	-2.6%	-5.3%	-7.3%	-9.7%	+16.4%
10-Day Volatility	Sep 8, 26	11.25%	-10.6%	-39.8%	-59.6%	-13.5%	-53.4%	-36.9%	-25.0%
1-Month Volatility	Sep 8, 26	14.12%	+2.8%	-26.2%	-62.8%	+18.1%	-28.6%	-17.2%	+21.4%
3-Month Volatility	Sep 8, 26	19.19%	-1.5%	-31.3%	-36.6%	+30.8%	-11.7%	+5.7%	+55.6%
1-Year Volatility	Sep 8, 26	21.38%	+0.1%	-1.6%	-2.6%	-5.3%	-7.3%	-9.7%	+16.4%
14-Day RSI	Sep 8, 26	36.42	-0.8%	-22.5%	-11.8%	-36.7%	-24.7%	-27.5%	-23.6%
Beta	Sep 8, 26	0.27	0.0%	-6.9%	0.0%	+350.0%	+107.7%	-60.3%	-35.7%
ATR	Sep 8, 26	$1.11	-1.3%	-17.3%	-35.0%	+37.3%	+11.3%	+30.8%	+75.1%
Price	Sep 8, 26	$78.06	-0.1%	-3.5%	-3.7%	+0.9%	+10.9%	+23.6%	+20.0%
200-Day SMA	Sep 8, 26	$83.09	0.0%	+0.4%	+2.9%	+15.0%	+24.6%	+27.1%	+33.8%
50-Day SMA	Sep 8, 26	$81.10	-0.1%	-0.8%	-5.6%	+6.3%	+13.9%	+25.5%	+24.5%
20-Day SMA	Sep 8, 26	$79.96	-0.1%	-2.0%	-4.4%	+4.9%	+13.3%	+28.5%	+21.9%

1-Year Volatility History

Date	Value	Change
Sep 9, 2026	21.38%	-5.3%
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 21.38%
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 23.15% on September 26, 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