Positive gamma
Dealers dampen the move
To stay neutral they have to sell strength and buy weakness. The aggregate effect tends to be range: pushes that fade, edges that hold and price pinned toward Max Gamma.
Dealer gamma exposure computed across the full options chain
See where dealers are forced to hedge.
GexVision reads the entire options chain — open interest, implied volatility and greeks at every strike and every expiration — computes real dealer gamma exposure and plots those levels straight onto your TradingView and Bookmap charts.
7-day free trial·
then $49/month, or $39/month billed annually·
cancel anytime
Call Wall
Max Gamma
Zero Gamma
Put Wall
Scroll the chart to see the levels →
The idea
Price is only half the story.
Most traders watch price and nothing else. But every open option contract forces someone — the dealer on the other side — to hedge by buying or selling the underlying. That hedging does not happen just anywhere: it clusters around specific strikes. And those strikes can be computed from the open interest, implied volatility and greeks in the chain.
Negative gamma
Dealers chase the move
Now the hedge runs the same way as price: they buy as it rises and sell as it falls. The aggregate effect tends to be acceleration: ranges that break, bigger candles and moves that extend.
Zero Gamma is the line between those two worlds — the gamma flip, where Net GEX crosses zero. Above it you are in one regime; below it, the other. Knowing which side of that level the session opens on changes how you read a range or a breakout.
Track record · last 30 sessions
How often the levels held. Measured, not promised.
Every session we check the tape against the levels we published that morning. Touched = price came within 0.1% of the level. Held = it closed on the right side. These are the same numbers subscribers see in the terminal.
SPX19 sessions
Call Wall heldtouched on 32% of days50%
Put Wall heldtouched on 32% of days50%
Closed inside the walls63%
Close inside the expected move62%
Zero Gamma: open & close same side63%
Verify yesterday's session →NDX19 sessions
Call Wall heldtouched on 53% of days40%
Put Wall heldtouched on 47% of days56%
Closed inside the walls21%
Close inside the expected move68%
Zero Gamma: open & close same side89%
Verify yesterday's session →SPY19 sessions
Call Wall heldtouched on 47% of days67%
Put Wall heldtouched on 42% of days50%
Closed inside the walls47%
Close inside the expected move79%
Zero Gamma: open & close same side95%
Verify yesterday's session →QQQ19 sessions
Call Wall heldtouched on 58% of days82%
Put Wall heldfew touches: counted, not averagedheld 2 of 2
Closed inside the walls63%
Close inside the expected move84%
Zero Gamma: open & close same side89%
Verify yesterday's session →97 symbols · levels recomputed every 5 minutes during the session · 19 sessions measured · touch = within 0.1% of the level
Computed from our own snapshots and 1-minute bars. No cherry-picking: every session counts. Each card links to yesterday's session, with the opening levels and what price did, so you can check it yourself.
What they say
Traders who use it, in their own words.
We ask customers a month in. First name and initial; never the email.
What you get
The levels, ranked by how much they weigh.
It is not a cloud of lines. It is a short set of levels computed across the whole chain, each one with its dollar size and its context, right on your chart.
Zero Gamma
The regime line — the gamma flip. The point where Net GEX crosses zero, recomputed on a price grid instead of eyeballed by interpolation. Above it: positive gamma. Below it: negative gamma.
Call Wall & Put Wall
The strike carrying the most call gamma and the strike carrying the most put gamma: the two edges where dealer hedging is most concentrated and where price tends to meet friction.
GEX 1-10
The ladder of the ten strikes with the most exposure, ranked by size, with the dollar amount per 1% move in the underlying. You can see which level carries weight and which one is noise.
Hold / Break
Every level is tagged HIGH, MED or LOW based on how positioning sits around it. These describe positioning conditions, not predictions.
Directional bias & Expected move
How current positioning skews the tape — pull toward Max Gamma in positive gamma, acceleration toward the wall in negative gamma — plus the Expected move band derived from implied volatility.
Index to futures
Levels are built on SPX and NDX and converted to ES, NQ, RTY and YM using the current index/futures ratio, recomputed on every update. You see the level at the price you actually trade.
0DTE Walls
Same-day expirations, isolated from the rest of the chain. 0DTE positioning behaves differently from the aggregate, so it is computed and plotted separately.
Alerts
Push and email when price crosses Zero Gamma, the regime or a wall changes, price gets near a level, or a symbol enters a screener filter. They re-arm themselves and never repeat within 10 minutes.
The terminal
A gamma terminal, not just an indicator.
What you would use from a Bloomberg, for gamma, at $49: a TradingView-grade chart with the levels on it, a command line (⌘K: SPX GEX, NDX SKEW, HEAT, ALRT…) and every panel a positioning trader needs. In the browser, installable on your phone.
On screen
This is what it looks like.
gexvision.io/terminal
Pick a tab or swipe · click the image to expand
Options chain per contract
Bid, ask, IV, delta, gamma, OI, volume and GEX for every strike, calls left and puts right, walls tagged on the strike.
Gamma heatmap strike × time
Where dealers built and destroyed gamma through the session, with price and Zero Gamma drawn over it.
Vanna & charm
Where the delta will come from when volatility moves or the day passes — and the 0DTE decay curve.
Screener with saved filters
Every symbol at once: regime, distance to the flip, 0DTE share, expected move, IV30, P/C. Save a filter and get alerted when a symbol enters it.
Alerts to your phone
Zero Gamma cross, regime change, wall change, price near a level, price crossing a value. Push and email; they re-arm themselves.
VIX curve, term & skew
VIX 1D · 9D · VIX · 3M · 6M with contango or backwardation, ATM term structure and 25Δ skew by expiration.
Economic calendar on the chart
FOMC, CPI, NFP, OPEX, VIX expiration and holidays, drawn on the chart and in the morning brief.
History 30 / 90 days + CSV
Zero Gamma, walls and net GEX against the close, day by day — see how the map moved before price did.
Morning Gamma Brief
Five lines per symbol every market day at 9:00 ET, by email and push, with a card you can share.
1 to 4 charts, layouts, pop-out
Multi-chart layouts, saved worksheets, panels popped out to a second monitor, and a share button with a public snapshot link.
Excel & Google Sheets
The levels as a CSV row and a ready-made =GEX("SPX"; "zero_gamma") for Sheets, Power Query for Excel.
Installable on your phone
The terminal installs as an app on iPhone and Android, with the same commands and panels.
Where it runs
On the screen you already trade.
The same levels, computed once and delivered in three formats. No switching platforms, no copying numbers by hand.
TradingView
An indicator that plots the levels on your chart, with a summary panel: regime, Net GEX, Net DEX, Zero Gamma, walls, 0DTE walls and the data timestamp.
- Hold/Break tags and Directional bias
- Runs on the chart you already use
- Unlocked on your account with your access key
Bookmap
An add-on that draws Zero Gamma, Call/Put Wall, Max Gamma and the GEX 1-10 ladder over the heatmap, already converted to your futures contract.
- Order flow and positioning on one screen
- Loads from Bookmap’s plugin settings
- Uses the same access key
Terminal, dashboard and API
The gamma terminal in the browser — chart with the levels, options chain, gamma heatmap, screener, vanna/charm, volatility, calendar, history and alerts — plus the classic dashboard, CSV and JSON by API with your token.
- Terminal installs on your phone; 1 to 4 charts on screen
- Excel and Google Sheets with =GEX(), your bot or your own system
- Nothing to install: it opens in the browser
Works on any symbol with listed options:
SPXNDXQQQSPY
IWMDIAand stocks
How the data actually works, no spin
- The options chain comes from the public CBOE feed, delayed about 15 minutes. It is not a real-time feed.
- Open interest publishes once a day and reflects the prior close. That is how the whole industry works — the OCC consolidates it daily.
- On top of that open interest, GexVision recomputes gamma every 5 minutes using price and implied volatility from the delayed feed.
Getting started
From checkout to levels on your chart: two minutes.
1
Subscribe
Pick monthly or annual and create your account. The first 7 days are free; cancel inside the trial and you are not charged.
2
Get your access key
One personal token that unlocks the TradingView indicator, the Bookmap add-on, the dashboard and the API. Same key for all of it.
3
Install and see the levels
Add the indicator to your chart, paste the key, and the levels show up over price. About two minutes, with a step-by-step guide in the docs.
Pricing
One plan. Two ways to pay for it.
Everything GexVision does is included in both. The only difference is the billing cycle.
Monthly
$49/month
Billed every month. No contract, cancel anytime.
Start your 7-day free trial7-day free trial · then $49/month
Annual
$39/month
Billed annually ($468 per year). That is 20% off the monthly rate.
Start your 7-day free trial7-day free trial · then $39/month
- Gamma terminal: chart with the levels, command line and 18 panels
- Options chain, screener with filters, gamma heatmap, vanna and charm
- VIX curve, term and skew, economic calendar, history 30/90 days
- Push and email alerts · Morning Gamma Brief at 9:00 ET
- 1 to 4 charts, saved layouts, shareable snapshots
- Excel and Google Sheets with =GEX() · installable on your phone
- TradingView indicator with every level
- Bookmap add-on over the heatmap
- Web dashboard + API (CSV and JSON)
- Zero Gamma, Call Wall, Put Wall and Max Gamma
- GEX 1-10 ladder with dollar size
- Net GEX, Net DEX and Expected move
- Hold/Break and Directional bias
- 0DTE walls computed separately
- Automatic conversion to ES, NQ, RTY and YM
- Zero Gamma cross and wall touch alerts
- Any symbol with listed options
- Recalculated every 5 minutes during the session
Selected plan: Annual — $39/month, billed annually ($468 per year). The first 7 days are free and you can cancel anytime from your account.
Start your 7-day free trialSubscriptions renew automatically at the price above until cancelled. Cancel anytime from your account — as easy as signing up. Privacy · Terms.
Not investment advice. Options involve risk. · Got a discount or access code?
Questions
What people ask before they pay.
No. GexVision computes the levels from the options chain, not from the futures feed, so the levels come out the same even if your chart is on delayed data.
If you also want live CME prices inside TradingView, that is TradingView’s own data add-on at about $7/month, purchased directly from them. It is optional and it is not part of your GexVision subscription.
No. GexVision does not generate signals, does not tell you what to buy or when to exit, and does not promise any outcome.
What it delivers is positioning context: where dealer gamma exposure sits, what regime that implies and which levels carry the most weight. The Hold/Break tags describe positioning conditions, not predictions. You combine it with your own process, your read of the market and your risk management.
Yes. Same-day expirations are computed separately from the rest of the chain and drawn as their own 0DTE walls, because that positioning behaves differently from the aggregate.
Keep the real data limitation in mind: open interest publishes once a day, so the 0DTE calculation starts from the prior close’s open interest and updates through the session using price and implied volatility from the delayed feed (~15 minutes).
A chart with TradingView-style navigation and your mark-ups, with Zero Gamma, Call Wall, Put Wall, Max Gamma, the expected-move band and the GEX ladder drawn on it, plus a command line (⌘K: SPX GEX, NDX SKEW, HEAT, ALRT…) and 18 panels: options chain per contract, screener with saved filters, gamma heatmap strike × time, vanna and charm with the 0DTE decay curve, VIX curve, term structure and skew, economic calendar, history 30/90 days with CSV, intraday profile, order flow and alerts.
You can put 1 to 4 charts on screen, save layouts, pop a panel out to a second monitor and share a snapshot with a public link. It installs on your phone as an app.
Yes. Push notifications to your phone or browser and, if you want, email: Zero Gamma cross, regime change, wall change, price within X% of a level, price crossing a value, and a symbol entering a screener filter you saved. Up to 25 rules; they re-arm themselves and never repeat within 10 minutes. There is also a Morning Gamma Brief every market day at 9:00 ET.
Yes. Every subscriber gets an API key. In Google Sheets a short Apps Script gives you =GEX("SPX"; "zero_gamma") in any cell; in Excel a Power Query pulls the same row. The guide has both snippets ready to paste.
Yes, on any symbol with listed options: indices like SPX and NDX, ETFs like QQQ, SPY, IWM or DIA, and individual stocks.
How useful it is depends on chain liquidity. On symbols with heavy open interest the walls are dense, well-defined levels; on thin chains there are far fewer contracts behind each strike and the levels are much less meaningful.
Yes. No contract and no penalty: cancel from your account at any time and you keep access through the end of the period you already paid for.
Cancel inside the 7-day trial and you are not charged.
Price tells you where the market has been. The options chain tells you where there is a mechanical obligation to hedge: how many contracts are open at each strike, how much gamma they carry and, therefore, how much underlying a dealer has to move to stay neutral.
A hand-drawn support line and a Put Wall can land on the same spot, but only one of them has a number behind it. GexVision does not replace your read of price: it adds the positioning layer that price, on its own, does not show.