537 calls and 7 puts traded on Nov 4, 2026, 544 contracts in total. Open interest was 3.88K contracts. Over the past 30 days, volume averaged 121 contracts per day. The AEE option volume chart shows volume by strike and expiration date.

Ameren IV rank is 6, so its 30-day implied volatility of 22.1% is near the bottom of its one-year range. Over the past year it ranged from 13.1% on Nov 26, 2025 to 162.0% on Jul 17, 2026. See the AEE implied volatility history for a longer view.

The Ameren put/call volume ratio was 0.01 on Nov 4, 2026, so calls outnumber puts. The put/call open interest ratio was 0.34. The AEE open interest chart shows calls and puts at each strike.

As of the Nov 4, 2026 close, max pain for Ameren options about one week from expiration was $100.43, 11.2% below the $113.16 close. The AEE max pain chart shows it for every expiration date.

Based on 7-day implied volatility of 22.6%, options price a move of about ±$3.53 (±3.1%) over the next week, a range of roughly $109.63 to $116.69 from the Nov 4, 2026 close. The AEE expected move chart shows it for every expiration date.