Read the market's
hidden gravity
Real-time options analytics. Dealer gamma exposure, volatility surfaces and the full option tape — computed every second from the complete chain, not sampled snapshots.
THE TERMINAL
Option Flow Analytics
Six modules, one screen each. Every shot is the live product — no mockups.
See where dealers have to hedge
Net gamma, delta, vanna and charm mapped strike by strike from the whole chain — not a sampled snapshot. The walls that pin price and the flip level that ends the pinning, both on one profile.
Know where the walls are before the bellFree tier included — no card to look around.
THE PRODUCT
This is what you trade with
One board, every module on at once. This is a real screen, not a mockup.
KNOWLEDGE BASE
Learn the language of option
Clear, no-jargon guides that turn Greek letters into trade decisions.
Call and put options: the language of options
Right, not obligation. Two contract types, four positions, and every strategy in the rest of this library built from them.
Sign in to read →FUNDAMENTALSMastering the Option Greeks
Every Greek is a dimension of risk a dealer has to neutralise — and every hedge they place is order flow you can read.
Sign in to read →GREEKSUnderstanding Gamma Exposure
Aggregating gamma across the whole chain into the hedging flow dealers are mechanically obliged to execute.
Sign in to read →GREEKSMarket behaviour across gamma regimes
Classify the day before you trade it — regime decides which game you are playing, and direction only decides the entry.
Sign in to read →0DTE0DTE: the final countdown
Contracts that expire the day they are traded — now a large share of index volume, and a real force on intraday movement.
Sign in to read →DEALER HEDGINGTrading below Put Support
A support level made of positioning rather than price history — and what changes in the hedging when it gives way.
Sign in to read →Read the levels the same way a desk doesThe Knowledge Base is open to everyone, free tier or not.
PRICING
Priced for every seat at the desk
Start free-to-look. Upgrade when the edge pays for itself.
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FAQ
Questions, answered
GEX (gamma exposure) estimates how much dealers must buy or sell to stay hedged as price moves. It reveals the levels where the market gets "pinned" or accelerates — one of the most reliable maps of intraday behavior.
No. The signals are readable at a glance, and our Knowledge Base walks you from the basics to advanced positioning. Most users are trading with the data within their first session.
Index products (QQQ, SPY, QQQ, NDX) plus thousands of liquid single-name equities and ETFs. Pro and Desk plans unlock custom watchlists across the full universe.
A subscription is real time — the entire option chain, every strike and every expiry, recomputed once a second for the whole session. What you read is the book as it stands, not a snapshot from a minute ago. Free access runs three days behind.
No. A subscription runs to the end of the period you have paid for, and payments are non-refundable — including unused time on an annual plan. You can stop it renewing at any point from your dashboard, and the free tier is there to try the product first.
No. Quantdecay provides market data and analytics for research and education. Nothing here is a recommendation to buy or sell any security. You are responsible for your own trading decisions.
See what the tape can't show you
Join traders who stopped guessing and started reading dealer gravity.
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