Gamma exposure, in plain English
Free articles about gamma, open interest, dealer hedging, and how options structure shapes intraday price action. Written for SPX, NDX, SPY, and QQQ traders. No math degree required.
5-minute orientation
Before diving into the articles below — a quick visual tour of the gamma levels on a real TradingView chart, what each one means, and how to read them together.
Fundamentals
What Is Gamma Exposure?
Gamma exposure shows where options positioning may matter for price movement. A simple guide for SPX, NDX, and SPY traders — no PhD required.
4 min read
What Is Open Interest?
Open interest tells you how many options contracts are still alive. Learn how it differs from volume and why it matters for gamma analysis.
4 min read
What Is Delta?
Delta tells you how much an option's price moves for every $1 move in the underlying. A plain-English guide for traders.
4 min read
What Is Theta?
Theta measures how fast an option loses value as time passes. Learn why time decay matters most for short-dated contracts.
4 min read
What Is Vega?
Vega measures how much an option's price changes when implied volatility shifts. Why IV crush wrecks earnings plays and how to read vega in context.
4 min read
The Greeks Explained
A plain-English tour of all the options Greeks — delta, gamma, theta, vega, rho, charm, and vanna. No calculus, just what each one means.
5 min read
Concepts
The Gamma Flip
The gamma flip marks the line between two very different market environments. Here's what it means and how traders use it.
3 min read
Call Walls & Put Walls
Call walls and put walls are major options levels that traders watch as potential support, resistance, or magnets for price.
3 min read
Charm & Vanna
Charm and vanna are the 'second-order' Greeks that cause end-of-day pinning and volatility-driven drift. A simple guide for traders.
4 min read
The Vol Trigger
The vol trigger is a level where dealer hedging pressure may flip from dampening volatility to amplifying it. Here's what it is and why traders watch it.
3 min read
Practical Use
How Gamma Changes Intraday
Gamma is not static. It shifts as price moves, time passes, and expiration approaches. Why morning levels go stale by lunchtime.
4 min read
Trading With Gamma
Gamma exposure shapes expectations, not setups. A practical guide to using gamma data to choose bias, manage risk, and avoid bad trades.
5 min read
Is Gamma Foolproof?
Gamma levels are useful, but they are not magic. Understand the limits of gamma-based trading before you bet on a level holding.
4 min read
Map vs Signal
The smartest way to use gamma exposure is as context, not as a trade trigger. A line on a chart is an invitation to pay attention, not a setup.
3 min read
When Gamma Works
Gamma analysis works best when the market is behaving normally. Here's when to trust it and when to expect bigger forces to dominate.
4 min read
OPEX Pinning
Why certain strikes act like magnets on monthly options expiration day. A simple explanation of pinning, dealer hedging pressure, and OPEX week patterns.
4 min read
Methodology
Real-Time vs Static Gamma
Static gamma levels from yesterday's close miss more than half of modern options flow. Why intraday updates matter for day traders.
4 min read
How 0DTE Changed Markets
Zero-days-to-expiration options went from a curiosity to the dominant flow in just a few years. Here's how they changed intraday trading forever.
5 min read
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