OIC 2026: Talking 0DTE Gamma, Market Volatility and the Future of Options with SpotGamma

In this episode of OIC 2026 Conversations, Mark Longo sits down with Matt Fox, Co-Founder & CEO of SpotGamma, to discuss how options flow is increasingly driving today's markets. The conversation explores the explosive growth of 0DTE options, the role of gamma in shaping intraday price action, and how traders can use support and resistance levels derived from options positioning to better understand market behavior. Mark and Matt also dive into: The rise of 0DTE trading Positive vs. negative gamma environments Why options volume is growing faster than stock volume Gamma scalping and dealer positioning Intraday volatility versus end-of-day market stability The GameStop phenomenon and the origins of "Diamond Hands" Real-time options analytics and market structure The growing debate around 24/7 options trading Why Matt believes more options products are good—but nonstop markets may not be