126 calls and 6 puts traded on Nov 4, 2026, 132 contracts in total. Open interest was 2.33K contracts. Over the past 30 days, volume averaged 186 contracts per day. The BKU option volume chart shows volume by strike and expiration date.

Bankunited IV rank is 8, so its 30-day implied volatility of 32.0% is near the bottom of its one-year range. Over the past year it ranged from 19.0% on Jul 28, 2026 to 190.9% on Jan 16, 2026. See the BKU implied volatility history for a longer view.

The Bankunited put/call volume ratio was 0.05 on Nov 4, 2026, so calls outnumber puts. The put/call open interest ratio was 0.48. The BKU open interest chart shows calls and puts at each strike.

As of the Nov 4, 2026 close, max pain for Bankunited options about one week from expiration was $45.74, 1.7% above the $44.98 close. The BKU max pain chart shows it for every expiration date.

Based on 7-day implied volatility of 34.3%, options price a move of about ±$2.14 (±4.8%) over the next week, a range of roughly $42.84 to $47.12 from the Nov 4, 2026 close. The BKU expected move chart shows it for every expiration date.