0 calls and 0 puts traded on Nov 4, 2026, 0 contracts in total. Open interest was 239 contracts. Over the past 30 days, volume averaged 5 contracts per day. The GRC option volume chart shows volume by strike and expiration date.

Gorman-Rupp IV rank is 13, so its 30-day implied volatility of 38.2% is near the bottom of its one-year range. Over the past year it ranged from 17.8% on Nov 25, 2025 to 176.8% on Jul 17, 2026. See the GRC implied volatility history for a longer view.

The Gorman-Rupp put/call volume ratio was 0.00 on Nov 4, 2026, so calls outnumber puts. The put/call open interest ratio was 0.23. The GRC open interest chart shows calls and puts at each strike.

As of the Nov 4, 2026 close, max pain for Gorman-Rupp options about one week from expiration was $60.65, 17.8% below the $73.74 close. The GRC max pain chart shows it for every expiration date.

Based on 7-day implied volatility of 42.8%, options price a move of about ±$4.37 (±5.9%) over the next week, a range of roughly $69.37 to $78.11 from the Nov 4, 2026 close. The GRC expected move chart shows it for every expiration date.