Northwest Natural Gas Company (NWN)

Last Closing Price: 39.74 (2025-06-13)

Historical Volatility (Close-to-Close) (180-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.

Northwest Natural Gas Company (NWN) had 180-Day Historical Volatility (Close-to-Close) of 0.2163 for 2025-06-13.