1.66K calls and 1.1K puts traded on Nov 4, 2026, 2.75K contracts in total. Open interest was 18.44K contracts. Over the past 30 days, volume averaged 700 contracts per day. The CMI option volume chart shows volume by strike and expiration date.

Cummins IV rank is 31, so its 30-day implied volatility of 49.3% is in the lower part of its one-year range. Over the past year it ranged from 23.4% on Nov 28, 2025 to 108.1% on Jan 16, 2026. See the CMI implied volatility history for a longer view.

The Cummins put/call volume ratio was 0.66 on Nov 4, 2026, so calls outnumber puts. The put/call open interest ratio was 0.81. The CMI open interest chart shows calls and puts at each strike.

As of the Nov 4, 2026 close, max pain for Cummins options about one week from expiration was $528.85, 12.1% above the $471.66 close. The CMI max pain chart shows it for every expiration date.

Based on 7-day implied volatility of 56.6%, options price a move of about ±$36.95 (±7.8%) over the next week, a range of roughly $434.71 to $508.61 from the Nov 4, 2026 close. The CMI expected move chart shows it for every expiration date.