$SPX Option Overview

2.52M calls and 3.04M puts traded on Nov 6, 2026, 5.56M contracts in total. Open interest was 25.18M contracts. Over the past 30 days, volume averaged 5.44M contracts per day. The $SPX option volume chart shows volume by strike and expiration date.

$SPX IV rank is 57, so its 30-day implied volatility of 19.5% is near the middle of its one-year range. Over the past year it ranged from 10.7% on Dec 26, 2025 to 26.2% on Mar 27, 2026. See the $SPX implied volatility history for a longer view.

The $SPX put/call volume ratio was 1.21 on Nov 6, 2026, so puts outnumber calls. The put/call open interest ratio was 1.43. The $SPX open interest chart shows calls and puts at each strike.

As of the Nov 6, 2026 close, max pain for $SPX options about one week from expiration was $7,640.00, 3.5% above the $7,381.40 close. The $SPX max pain chart shows it for every expiration date.

Based on 7-day implied volatility of 23.0%, options price a move of about ±$234.90 (±3.2%) over the next week, a range of roughly $7,146.50 to $7,616.30 from the Nov 6, 2026 close. The $SPX expected move chart shows it for every expiration date.