National Grid Transco, PLC (NGG)

Last Closing Price: 71.60 (2025-09-12)

Historical Volatility (Close-to-Close) (120-Day)

Historical Volatility (Close-to-Close): The past volatility of the security over the selected time frame, calculated using the closing price on each trading day.

National Grid Transco, PLC (NGG) had 120-Day Historical Volatility (Close-to-Close) of 0.2081 for 2025-09-12.