SPX Gamma evaluates options activity through four connected elements: market structure, directional pressure, positioning, and strategy context. The framework combines current-session option flow with gamma exposure, volatility, expected movement, and historical behavior to assess SPX conditions across intraday and multi-day trading horizons.
Within SPX Gamma’s 0DTE methodology, significant put selling can help define potential support, while significant call selling can help define potential resistance. These seller-defined levels give traders references for evaluating price behavior. They are not guaranteed barriers, and their relevance can change as price and option activity develop.
Call buying can reinforce bullish pressure, while put buying can reinforce bearish pressure. The interpretation also depends on where that activity occurs relative to SPX and whether it aligns with seller-defined support or resistance. Buyer activity provides directional context that should be evaluated alongside the broader structure.
Option flow describes transactions occurring during the session. Gamma exposure, or GEX, across expirations adds context around broader options positioning. Together, these inputs help traders evaluate current activity within the exposure conditions surrounding the market.
Volatility, expected movement, time to expiration, and historical market behavior help connect the analysis to a strategy’s purpose and trading horizon. They provide context for evaluating movement and selecting position structures across different environments.
Active Trader applies these relationships to developing intraday conditions, including support, resistance, and directional pressure. Premium Sellers applies the broader analytical foundation to strategy selection and position construction across multiple expirations. Both frameworks connect options activity with market context rather than relying on an individual transaction or measurement alone.