204 calls and 7 puts traded on Nov 4, 2026, 211 contracts in total. Open interest was 3.17K contracts. Over the past 30 days, volume averaged 102 contracts per day. The GNTX option volume chart shows volume by strike and expiration date.

Gentex IV rank is 14, so its 30-day implied volatility of 37.1% is near the bottom of its one-year range. Over the past year it ranged from 13.7% on Aug 17, 2026 to 182.4% on Oct 16, 2026. See the GNTX implied volatility history for a longer view.

The Gentex put/call volume ratio was 0.03 on Nov 4, 2026, so calls outnumber puts. The put/call open interest ratio was 0.68. The GNTX open interest chart shows calls and puts at each strike.

As of the Nov 4, 2026 close, max pain for Gentex options about one week from expiration was $22.61, 8.6% above the $20.82 close. The GNTX max pain chart shows it for every expiration date.

Based on 7-day implied volatility of 40.7%, options price a move of about ±$1.17 (±5.6%) over the next week, a range of roughly $19.65 to $21.99 from the Nov 4, 2026 close. The GNTX expected move chart shows it for every expiration date.