135 calls and 16 puts traded on Nov 4, 2026, 151 contracts in total. Open interest was 5.06K contracts. Over the past 30 days, volume averaged 297 contracts per day. The WRB option volume chart shows volume by strike and expiration date.

W.R. Berkley IV rank is 16, so its 30-day implied volatility of 24.6% is near the bottom of its one-year range. Over the past year it ranged from 1.3% on Dec 19, 2025 to 145.5% on Jan 16, 2026. See the WRB implied volatility history for a longer view.

The W.R. Berkley put/call volume ratio was 0.12 on Nov 4, 2026, so calls outnumber puts. The put/call open interest ratio was 0.19. The WRB open interest chart shows calls and puts at each strike.

As of the Nov 4, 2026 close, max pain for W.R. Berkley options about one week from expiration was $74.49, 2.9% below the $76.72 close. The WRB max pain chart shows it for every expiration date.

Based on 7-day implied volatility of 25.8%, options price a move of about ±$2.74 (±3.6%) over the next week, a range of roughly $73.98 to $79.46 from the Nov 4, 2026 close. The WRB expected move chart shows it for every expiration date.