424 calls and 791 puts traded on Nov 4, 2026, 1.22K contracts in total. Open interest was 2.32K contracts. Over the past 30 days, volume averaged 228 contracts per day. The CLH option volume chart shows volume by strike and expiration date.

Clean Harbors IV rank is 4, so its 30-day implied volatility of 26.2% is near the bottom of its one-year range. Over the past year it ranged from 19.6% on Dec 26, 2025 to 168.4% on Jan 16, 2026. See the CLH implied volatility history for a longer view.

The Clean Harbors put/call volume ratio was 1.87 on Nov 4, 2026, so puts outnumber calls. The put/call open interest ratio was 1.75. The CLH open interest chart shows calls and puts at each strike.

As of the Nov 4, 2026 close, max pain for Clean Harbors options about one week from expiration was $310.00, 7.5% above the $288.30 close. The CLH max pain chart shows it for every expiration date.

Based on 7-day implied volatility of 26.8%, options price a move of about ±$10.69 (±3.7%) over the next week, a range of roughly $277.61 to $298.99 from the Nov 4, 2026 close. The CLH expected move chart shows it for every expiration date.