A free GEX calculator and live dashboard for any US ticker. Enter a symbol, see the call wall, put wall, gamma flip, and per-strike gamma exposure - no signup. Plus a multi-ticker dashboard for the most-traded names.
"GEX calculator" and "GEX dashboard" mean different things depending on what you need. Some people want a per-ticker lookup - type TSLA, see the levels. Others want a multi-ticker scan - which names are in positive vs negative gamma regime right now? Both tools are free on FlashAlpha, no signup, no credit card, no time-limited trial.
SPY net GEX by strikeillustrative
What a GEX calculator actually computes: signed dealer gamma per strike from the option chain - the flip, walls and net figure all fall out of this one profile.
GEX Calculator - Single Ticker Lookup
The GEX calculator is the per-ticker tool. Type any US-listed symbol, and it returns:
Net GEX - aggregate dealer gamma position, signed.
Gamma flip price - where cumulative GEX crosses zero.
Call wall - strike with the largest positive dealer gamma (intraday resistance).
Put wall - largest negative dealer gamma (intraday support).
Per-strike GEX chart - every active strike, dealer gamma signed and scaled.
Regime label - positive / negative gamma regime based on spot vs flip.
The computation runs on live option chain data and refreshes intraday, not end-of-day. If you've used other "GEX calculators" that return stale data or require a spreadsheet upload, this is the opposite - type a symbol, get the current state of dealer positioning.
Try it:Open the GEX calculator and type SPY, TSLA, NVDA, or any other US-listed ticker to see live dealer gamma positioning.
GEX Dashboard - Multi-Ticker View
When you need the bigger picture across several names at once, the GEX dashboard shows the top-traded US tickers side by side:
Net GEX per ticker
Gamma flip, call wall, put wall
Current price vs flip (regime indicator)
At-a-glance view of which names are in suppressed-vol vs amplified-vol regime
Useful before the open to check "what's the market setup today" - if SPY, QQQ, and the megacaps are all positive-gamma and pinned near their largest GEX strikes, expect a range day. If half the names flipped short gamma overnight, expect volatility expansion.
Which One Do You Want?
If you need…
Use
One ticker's full GEX breakdown + per-strike chart
Ticker-specific page with all metrics (GEX + IV rank + max pain + skew)
/stock/{ticker} pages
What the Calculator Does Under the Hood
Calling it a "calculator" is slightly misleading - you don't feed it option prices and get GEX out. The calculator reads the live option chain, computes gamma per contract using Black-Scholes with real-time IV, multiplies by open interest, signs the result using the standard dealer convention (call gamma positive, put gamma negative), and aggregates to a per-strike profile.
In other words: the "input" is the ticker. Everything else is computed automatically from live options data. No spreadsheet, no manual option chain downloads, no guessing at the dealer side of each trade.
vs SpotGamma: SpotGamma has daily written analysis. FlashAlpha's calculator is free to view for every ticker without a trial countdown and exposes the data via API. If you want expert commentary on top of the levels, SpotGamma. If you want programmatic access and a no-login entry point, FlashAlpha.
vs Unusual Whales: Unusual Whales is strongest on options flow and dark pool data. The gamma dashboards exist but aren't the core product. FlashAlpha's core product is computed exposure analytics, with options flow (signals, tape, sweeps and blocks) alongside it.
vs free "GEX calculator" spreadsheets: Spreadsheets require you to download option chains manually, compute gamma per contract, handle sign conventions, and refresh by hand. This tool is the automated version.
If the calculator is the "UI" version, the API is the "wire it into your own dashboard" version. The free tier gives 5 requests per day against the GEX endpoint, enough for a small daily scan:
The response is the same data the calculator renders - net GEX, gamma flip, regime label, and the full per-strike array. Call wall and put wall come from the sibling /v1/exposure/levels/{symbol} endpoint. Grab a free API key and see the GEX endpoint reference for schema details. Single-expiry queries are on the free tier; full-chain aggregation is a Growth feature.
FAQ
Is the GEX calculator really free? Yes. Every US-listed ticker, unlimited views, no signup required.
Does it cover small-caps and ETFs? Yes - any US-listed name with an active option chain. GLD, SLV, ARM, MU, SOFI, and thousands of others.
How often does it update? Intraday, as option flow lands. Not an end-of-day snapshot.
Can I embed it? Yes. An embed view of the derived levels is at /stock/{ticker}/embed-key-levels.
What's the difference between the calculator and the dashboard? Calculator = one ticker at a time, full breakdown. Dashboard = many tickers at a glance, top-line metrics only.
Two tools, one stack: GEX calculator for per-ticker depth, GEX dashboard for multi-ticker overview. Both free, both live, both covering 6,000+ US names. If you're wiring GEX into code, the API returns the same data the tools render.
