15 calls and 10 puts traded on Nov 4, 2026, 25 contracts in total. Open interest was 1.54K contracts. Over the past 30 days, volume averaged 72 contracts per day. The KALU option volume chart shows volume by strike and expiration date.

Kaiser Aluminum IV rank is 15, so its 30-day implied volatility of 50.4% is near the bottom of its one-year range. Over the past year it ranged from 26.7% on Nov 24, 2025 to 189.1% on Jul 17, 2026. See the KALU implied volatility history for a longer view.

The Kaiser Aluminum put/call volume ratio was 0.67 on Nov 4, 2026, so calls outnumber puts. The put/call open interest ratio was 0.19. The KALU open interest chart shows calls and puts at each strike.

As of the Nov 4, 2026 close, max pain for Kaiser Aluminum options about one week from expiration was $119.78, 8.1% above the $110.84 close. The KALU max pain chart shows it for every expiration date.

Based on 7-day implied volatility of 54.9%, options price a move of about ±$8.43 (±7.6%) over the next week, a range of roughly $102.41 to $119.27 from the Nov 4, 2026 close. The KALU expected move chart shows it for every expiration date.