SPY gamma exposure levels
SPY carries the deepest options market in the world, and a large share of that volume is 0DTE. That makes dealer gamma exceptionally dense and fast-moving: the levels can pin price for hours and then give way the moment a wall is breached.
This page explains how to read SPY's gamma structure. It shows no live numbers — the live map lives in the indicator. Educational context only, not a signal.
Why SPY's gamma matters.
Because SPY prints daily expirations, its gamma structure is rebuilt every session and the same-day walls matter more than in almost any other name. When dealers are long gamma the S&P grinds in a tight band; when a large move pushes price below the gamma flip, hedging flips to amplifying and the index can trend hard.
The SPY levels that matter.
Every gamma map is built from a few dealer-positioning levels. On SPY they read like this.
The ceiling
The strike with the heaviest call gamma above spot. Dealers hedge hard there, so it often caps rallies until it breaks.
The floor
The strike with the heaviest put gamma below spot. It often supports dips while dealer hedging holds.
The regime line
Where net dealer gamma crosses zero. Above it hedging dampens moves; below it hedging amplifies them.
Zero-gamma level
The price where dealers flip from long to short gamma — near the flip, it marks where volatility can pick up.
Expiry gravity
The strike that minimises total option-holder payout at expiry — a reference into monthly expiration.
Concentration
The high-concentration strikes between the walls where hedging clusters and price often reacts.
How to read them.
Start with the gamma flip: it tells you which regime SPY is in. When price is accepted above it, dealers are usually long gamma and the tape dampens — tighter ranges, rotation around the levels. When price is below it, dealers lean short gamma and moves amplify — faster, trend-prone sessions. Then read the call wall above and put wall below as the edges dealers hedge hardest.
The levels are a snapshot of positioning, so they go stale as the chain changes through the day — the indicator refreshes them each session. And they are context on how SPY is likely to behave, never an instruction to trade. To learn the mechanics, read how to read dealer positioning and what gamma exposure is.
SPY gamma — questions traders ask.
Are SPY and SPX gamma levels the same?
They are closely related but not identical. SPX and SPY track the same index, but their options are held by different crowds and cash-settle differently, so their walls can sit a few points apart once converted. Reading them together is why the indicator lets you overlay an index set beside an ETF set.
Is this a buy or sell signal?
No. Gamma-exposure levels describe where option dealers hold concentrated hedging pressure — they are context on how a session is likely to behave, not a recommendation to buy or sell and not a prediction of direction. Educational and informational only; trading involves substantial risk of loss.
Where do the live levels come from?
The GEX Levels indicator computes them from the live options chain and draws them on your chart — call wall, put wall, gamma flip, vol trigger and more, refreshed each session. This page explains the concept; the live map lives in the indicator.
See the live SPY map.
The concept is free to read. The live SPY levels — call wall, put wall, gamma flip, the regime and more, refreshed every session — are built into the GEX Levels indicator. The free Morning Map shows the prior session's index levels each day.
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