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Gamma exposure (GEX), strike by strike
Dealers hedge the options they trade, and that hedging can slow price at some strikes and speed it up at others. MomoEdge's gamma exposure (GEX) tool estimates dealer gamma at every strike of a ticker, names the levels that matter and draws them on your chart.
MomoEdge Premium is $150/month. Join the waitlist. When your spot opens, your first 7 days are free.
The levels
The strikes worth knowing, named for you
Badges on the strike chart mark the levels traders watch. They are estimates of where hedging pressure sits, not lines price must respect.
Call wall
The strongest positive gamma above the price. Often read as a ceiling.
Put support
The strongest negative gamma below the price. Often read as a floor.
Gamma flip
The estimated price where total dealer gamma turns from positive to negative.
Magnet
The heavy strike between the wall and support that price tends to hold near in a pinned market.
On your chart
The levels drawn on the candles
The chart draws the latest call wall, gamma flip and put support as lines, where you already read price.
- Call wall
- Gamma flip
- Put support
Market state
Calm, pinned or trending, at a glance
The panel sorts the ticker by how much of the gamma near the price is positive. More positive means hedging that leans against moves; less means hedging that goes with them.
PRISM
Every strike, every expiry, on one grid
Each row is a strike and each column an expiration, with a total column. Every cell is calls minus puts for what you choose to show: GEX, vanna, open interest, volume, unusual volume, or today's trades read as bought or sold.
More than one picture
- Change since open: marks the cells that changed most since the day's first save.
- Replay: the grid as it was saved every 5 minutes over the last 5 sessions.
- Confluence: SPX, SPY and QQQ side by side.
- 0DTE: today's expiration, or the next one, on its own.
- Today's trades: open interest is counted once a day; the grid can also count today's trades that filled at the bid or the ask, seen from the dealer's side.
Positioning and today
What was open this morning, and what traded since
Standard GEX rests on open interest, counted once a day, and on one assumption: that dealers are long calls and short puts. MomoEdge can set beside it the gamma of today's trades that could be read as bought or sold.
Open interest GEX
Today's sided trades
Both are estimates. Nobody can see dealers' real positions. When the long calls, short puts assumption is wrong at a strike, so is that strike's sign.
How fresh it is
Updated through the session
While the market is open, the levels and the grid reload on their own. Open interest is counted once a day, overnight.
The GEX levels on the chart update about every 3 minutes while the market is open.
The PRISM grid reloads about every 30 seconds during market hours.
Replay steps back through saves taken every 5 minutes.
A fast move can get ahead of the levels. They are estimates refreshed on a clock, not a feed of dealers' books.
Learn to read GEX
The free lesson: why hedging matters, the strike chart, the levels and the market state.
Read the GEX lesson →Sector rotation
Which sectors lead the S&P 500 and which fade, on one map, in the same plan.
See the sector rotation tool →Compare tools
How MomoEdge compares with SpotGamma, MenthorQ and other options tools, from their own pages.
See the comparisons →The proof: trades our team takes, with real money
Our team trades one real-money $10,000 account, and every closed trade is on the $10K page: winners and losers, each buy, trim and exit.
- Real moneyA real brokerage account, at its own fills.
- Closed tradesEach trade shows in full once it has closed, whatever the result.
- Before costsResults are shown before commissions and fees.
One real-money account over a short period, shown before commissions and fees. Your results will differ with your own fills, timing and size, and options can lose their full value. Past performance does not guarantee future results. Not investment advice. Disclaimer · Terms
Gamma exposure questions
What is gamma exposure (GEX)?
Dealers who trade options usually hedge them by trading the stock, and gamma measures how fast that hedge has to change as price moves. GEX adds it up at each strike. Where dealers are long gamma, their hedging tends to lean against a move; where they are short gamma, it tends to go with it.
What are the call wall, put support and gamma flip?
The call wall is the strongest positive gamma above the price, often read as a ceiling. Put support is the strongest negative gamma below it, often read as a floor. The gamma flip is the estimated price where total dealer gamma turns from positive to negative.
How is GEX different from options flow?
GEX is positioning: the options already open, and how dealers may hedge them. Options flow is the trades printing today. MomoEdge has both in one plan, and PRISM can count today's trades that filled at the bid or the ask as gamma.
How often do the levels update?
While the market is open, the GEX levels on the chart update about every 3 minutes and the PRISM grid reloads about every 30 seconds. Open interest is counted once a day, overnight.
Is GEX a prediction?
No. It is an estimate of where hedging pressure may sit, built on an assumption about how dealers are positioned. Price can run through any level, and a fast move can get ahead of the levels. Use it to decide where to look, together with your own plan and risk.
How much does MomoEdge cost?
MomoEdge Premium is one plan, $150/month: gamma exposure and PRISM, sector rotation, options flow, the chart, the $10K account and the private Discord with our analysts. Your first 7 days are free.
Can I try MomoEdge first?
Yes. Request access on the waitlist. When your spot opens, an access code arrives by email and starts your 7-day free trial. A card is needed to start it, and if you cancel before day 7 you pay nothing.
See the levels live
Gamma exposure, PRISM, sector rotation and the $10K account, in the analytics engine built to make better traders.
MomoEdge Premium is $150/month. Join the waitlist. When your spot opens, your first 7 days are free.