314 calls and 273 puts traded on Nov 4, 2026, 587 contracts in total. Open interest was 38.42K contracts. Over the past 30 days, volume averaged 750 contracts per day. The IRM option volume chart shows volume by strike and expiration date.

Iron Mountain IV rank is 56, so its 30-day implied volatility of 37.8% is near the middle of its one-year range. Over the past year it ranged from 27.4% on Dec 26, 2025 to 46.0% on Aug 4, 2026. See the IRM implied volatility history for a longer view.

The Iron Mountain put/call volume ratio was 0.87 on Nov 4, 2026, so calls outnumber puts. The put/call open interest ratio was 1.81. The IRM open interest chart shows calls and puts at each strike.

As of the Nov 4, 2026 close, max pain for Iron Mountain options about one week from expiration was $115.00, 3.2% below the $118.79 close. The IRM max pain chart shows it for every expiration date.

Based on 7-day implied volatility of 58.4%, options price a move of about ±$9.61 (±8.1%) over the next week, a range of roughly $109.18 to $128.40 from the Nov 4, 2026 close. The IRM expected move chart shows it for every expiration date.