What a GEX Chart Is Actually Estimating

Gamma exposure charts are often presented as maps of where dealers must buy, sell, support, or accelerate the market. But what do those bars actually measure—and what has to be assumed? This episode builds gamma exposure from the beginning using one fictional stock, one option, and one visual hedge. You will see why a hedge becomes stale, what gamma measures, why the same public open interest can support opposite dealer-hedging estimates, and how to evaluate a GEX chart without treating it as a guaranteed forecast. You do not need prior options knowledge. 0:00 What a GEX chart claims 0:29 The minimum you need to know about options 1:03 Build the first hedge 2:13 How the hedge becomes stale 2:44 Gamma in plain language 3:42 Scale the mechanism to ten calls 4:34 Reverse the hidden dealer position 5:23 What GEX is estimating 5:57 What open interest cannot reveal 6:53 Positive and negative gamma 8:00 Can open interest reveal the hedge? 8:24 Three questions for any GEX chart This video is educational and uses simplified examples. It is not investment advice, a trading signal, or a prediction of market direction.