1.78K calls and 968 puts traded on Nov 4, 2026, 2.75K contracts in total. Open interest was 53.34K contracts. Over the past 30 days, volume averaged 2.23K contracts per day. The BLDR option volume chart shows volume by strike and expiration date.

Builders FirstSource IV rank is 13, so its 30-day implied volatility of 58.5% is near the bottom of its one-year range. Over the past year it ranged from 38.5% on Dec 22, 2025 to 189.0% on Jan 16, 2026. See the BLDR implied volatility history for a longer view.

The Builders FirstSource put/call volume ratio was 0.54 on Nov 4, 2026, so calls outnumber puts. The put/call open interest ratio was 0.47. The BLDR open interest chart shows calls and puts at each strike.

As of the Nov 4, 2026 close, max pain for Builders FirstSource options about one week from expiration was $55.00, 20.9% below the $69.55 close. The BLDR max pain chart shows it for every expiration date.

Based on 7-day implied volatility of 63.0%, options price a move of about ±$6.07 (±8.7%) over the next week, a range of roughly $63.48 to $75.62 from the Nov 4, 2026 close. The BLDR expected move chart shows it for every expiration date.