0DTE Options Explained: How They Work, Their Risks and Why Volume Exploded
Only a few years ago, buying an option that expires the same day was a niche curiosity. Today it is the core of the US index options market. According to Cboe, 0DTE options made up about 65% of SPX options volume in Q2 2026, and hit a record 66.2% in July 2026. Understanding these instruments […]