6 calls and 0 puts traded on Nov 4, 2026, 6 contracts in total. Open interest was 528 contracts. Over the past 30 days, volume averaged 8 contracts per day. The NWN option volume chart shows volume by strike and expiration date.

Northwest Natural IV rank is 23, so its 30-day implied volatility of 45.5% is in the lower part of its one-year range. Over the past year it ranged from 9.8% on Nov 20, 2025 to 163.0% on Oct 16, 2026. See the NWN implied volatility history for a longer view.

The Northwest Natural put/call volume ratio was 0.00 on Nov 4, 2026, so calls outnumber puts. The put/call open interest ratio was 0.31. The NWN open interest chart shows calls and puts at each strike.

As of the Nov 4, 2026 close, max pain for Northwest Natural options about one week from expiration was $51.08, 0.5% below the $51.34 close. The NWN max pain chart shows it for every expiration date.

Based on 7-day implied volatility of 57.9%, options price a move of about ±$4.12 (±8.0%) over the next week, a range of roughly $47.22 to $55.46 from the Nov 4, 2026 close. The NWN expected move chart shows it for every expiration date.