764 calls and 1.12K puts traded on Nov 4, 2026, 1.88K contracts in total. Open interest was 40.71K contracts. Over the past 30 days, volume averaged 1.32K contracts per day. The REGN option volume chart shows volume by strike and expiration date.

Regeneron Pharmaceuticals IV rank is 34, so its 30-day implied volatility of 33.7% is in the lower part of its one-year range. Over the past year it ranged from 25.6% on Aug 14, 2026 to 49.2% on Apr 6, 2026. See the REGN implied volatility history for a longer view.

The Regeneron Pharmaceuticals put/call volume ratio was 1.46 on Nov 4, 2026, so puts outnumber calls. The put/call open interest ratio was 0.96. The REGN open interest chart shows calls and puts at each strike.

As of the Nov 4, 2026 close, max pain for Regeneron Pharmaceuticals options about one week from expiration was $831.43, 10.7% below the $931.19 close. The REGN max pain chart shows it for every expiration date.

Based on 7-day implied volatility of 39.2%, options price a move of about ±$50.57 (±5.4%) over the next week, a range of roughly $880.62 to $981.76 from the Nov 4, 2026 close. The REGN expected move chart shows it for every expiration date.