Understand how Gamma Exposure works, how market makers position themselves, and how to use dealer positioning data in your trading decisions.
0DTE and 1DTE are a single expiration date you can trade. Weekly, Monthly, and 90 AGG pool dealer gamma across many expirations, summed by strike. Here's exactly how each view is built — and which to use for picking a contract.
Read article →GEX is a model, not a measurement. Two platforms can show different Call Walls, Put Walls, and Gamma Flip levels for the same ticker — and both can be mathematically defensible. Read this before comparing platforms.
Read article →The foundational concept behind dealer positioning. Learn what GEX measures, how it's calculated, and why it creates structural support and resistance in the market.
Read article →Call Walls and Put Walls are the price levels with the highest gamma concentration. Learn why they act as magnets and how dealers defend these strikes.
Read article →The single most predictive feature of wall behavior in our 5,992-event backtest. Learn the 7 zones, what each one means, and how to combine the % with regime, flow, and price action.
Read article →The Zero Gamma level is where dealer hedging behavior reverses. Above it, dealers suppress volatility. Below it, they amplify it. Learn how to trade the flip.
Read article →The three GEX levels — Call Wall, Put Wall, and Gamma Flip — together define dealer hedging structure on any chart. How they're calculated, why they matter, and how to trade around them.
Read article →SPY is the world's largest options market. Why SPY GEX matters more than most metrics, the 3 levels to watch, and how 0DTE flow shapes intraday SPY behavior.
Read article →When dealers are long gamma they stabilize price. When they're short gamma they chase it. Understanding the regime is the single most important context for intraday traders.
Read article →Zero-day-to-expiry options have exploded in volume. Learn how 0DTE gamma accumulates intraday, how it pins price near key strikes, and why it fades after the close.
Read article →Market makers hedge their options books continuously. That hedging creates predictable directional pressure. Learn the mechanics and how to read it on GEXBoard.
Read article →Vanna and Charm are second-order Greeks that drive dealer hedging flows throughout the session. Learn why IV drops cause melt-ups and how time decay creates mechanical drift into the close.
Read article →Monthly options expiration week creates the largest structural gamma event of the month. Learn why price pins, volatility is suppressed, and what happens to the market after expiration.
Read article →Market makers continuously delta-hedge their options books, creating flows that shape intraday price behavior. Understand the mechanics behind the structural levels GEXBoard measures.
Read article →A complete visual guide to reading Gamma Exposure charts. Understand the bars, key levels, Call Wall, Put Wall, Zero Gamma line, and how to use them for trading decisions.
Read article →Two ways to measure dealer gamma — one captures structural positioning, the other captures intraday flow. Learn the key differences and when to use each method.
Read article →Open interest is the foundation of GEX analysis. Learn what it means, how it differs from volume, and why high-OI strikes create structural price levels that move markets.
Read article →SPX options carry the largest gamma exposure in the market. Learn why index options drive S&P 500 price action, how they differ from SPY, and how to trade around them.
Read article →Implied volatility directly affects how much gamma dealers carry and how aggressively they hedge. Learn how IV changes reshape GEX levels and why VIX matters for gamma analysis.
Read article →The GEX Heatmap shows gamma exposure across all strikes and expirations in a single view. Learn how to spot gamma clusters and identify the strongest structural levels.
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