3.0K calls and 1.91K puts traded on Nov 4, 2026, 4.9K contracts in total. Open interest was 45.78K contracts. Over the past 30 days, volume averaged 2.48K contracts per day. The BLK option volume chart shows volume by strike and expiration date.

Blackrock IV rank is 22, so its 30-day implied volatility of 26.5% is in the lower part of its one-year range. Over the past year it ranged from 21.7% on Jan 16, 2026 to 43.0% on Mar 30, 2026. See the BLK implied volatility history for a longer view.

The Blackrock put/call volume ratio was 0.64 on Nov 4, 2026, so calls outnumber puts. The put/call open interest ratio was 0.76. The BLK open interest chart shows calls and puts at each strike.

As of the Nov 4, 2026 close, max pain for Blackrock options about one week from expiration was $1,157.86, 5.4% below the $1,224.48 close. The BLK max pain chart shows it for every expiration date.

Based on 7-day implied volatility of 32.0%, options price a move of about ±$54.20 (±4.4%) over the next week, a range of roughly $1,170.28 to $1,278.68 from the Nov 4, 2026 close. The BLK expected move chart shows it for every expiration date.