Gamma Exposure Trading: GEX, Dealer Positioning, Gamma Flip, Call Walls, Put Walls, 0DTE Options, and Intraday Market Structure

What if an important part of intraday price behavior is being shaped by risk that never appears directly on a candlestick chart?

Gamma Exposure Trading is a practical guide to the hidden options mechanics that can influence index, ETF, futures, and intraday market behavior. Rather than treating Gamma Exposure as a mysterious indicator or a collection of magical support and resistance levels, Faramarz Kowsari builds a disciplined framework for understanding what GEX can reveal, what it cannot reveal, and how professional traders can combine option-derived information with live market structure.

The book begins with the essential mechanics behind Delta, Gamma, open interest, implied volatility, and dealer hedging. It then moves from individual option sensitivities into the market-level concepts that traders encounter on modern GEX dashboards: positive Gamma, negative Gamma, Gamma Flip, Call Walls, Put Walls, high-Gamma nodes, low-Gamma regions, and changing positioning around expiration.

This is not a book about blindly trading colored lines on a Gamma chart.

The central idea is more demanding: build the map before price arrives, form a testable hypothesis, and then require the live market to confirm or reject it. A Gamma level becomes a place to pay attention—not an automatic reason to buy or sell. That principle runs throughout the book and separates systematic interpretation from hindsight storytelling.

Readers learn how dealer hedging can potentially dampen movement in some environments and amplify it in others; why the sign of Gamma matters; how positioning assumptions affect GEX models; why open interest does not reveal the complete dealer book; and why two Gamma providers can produce different maps from apparently similar data.

The book goes far beyond basic GEX definitions.

Dedicated chapters explore:

• Delta and Gamma mechanics and why rapidly changing Delta can force more frequent hedge adjustment.

• Positive-Gamma environments, where hedging behavior may contribute to rotation, compression, and mean-reverting price action.

• Negative-Gamma environments, where hedge adjustment may reinforce movement and contribute to faster expansion.

• Gamma Flip, including the transition between market regimes and the danger of treating a modeled flip level as a guaranteed boundary.

• Call Walls and Put Walls, how they are constructed, how traders interpret them, and what may happen when price accepts beyond an important wall.

• High-Gamma nodes, low-Gamma zones, and Gamma gradients, providing a more nuanced map than a single headline level.

• 0DTE options, where same-day expiration can concentrate sensitivity and make intraday positioning more dynamic.

• Expiration and OPEX effects, including the decay and migration of option-related exposures.

• Vanna and Charm, extending the framework beyond Gamma to understand how volatility and time can alter hedge requirements.

The book then turns theory into an actual trading workflow.

A detailed 15-minute pre-market Gamma routine shows how to organize the information before the session begins. The reader learns to combine GEX with expected move, opening structure, VWAP, Volume Profile, price action, and order-flow evidence rather than allowing any single model to dominate the decision.

Several practical trading environments are developed, including:

Positive-Gamma Rotation

Negative-Gamma Expansion

Gamma Flip Reclaim

Wall Break and Repricing

Each is framed as a conditional market hypothesis rather than a mechanical signal.

The execution sections address targets, invalidation, position sizing, and the difficult question many Gamma traders eventually face:

Why does a beautiful Gamma map sometimes do absolutely nothing?

That question leads into one of the most valuable parts of the book: model failure, confirmation bias, provider differences, and the danger of turning every market move into a Gamma story after the fact.

The book explicitly emphasizes that GEX is model-dependent rather than a direct photograph of every dealer position. Gamma_Exposure_Trading_Faramarz… Its practical framework therefore requires the trader to build a map, observe price at the relevant areas, and allow live evidence to determine whether the model deserves weight. Gamma_Exposure_Trading_Faramarz…

For traders who want evidence rather than mythology

Later chapters introduce a structured GEX trading journal, methods for backtesting Gamma levels, techniques for comparing two GEX providers, and multiple case studies covering positive-Gamma compression, negative-Gamma expansion, Gamma Flip transitions, 0DTE wall migration, and sessions where the tape simply disagrees with the Gamma model. The book also includes a formula guide, common-error framework, daily decision tree, practical glossary, daily Gamma worksheet, and visual reference material. The case-study and testing structure is reflected throughout the later chapters of the book. Gamma_Exposure_Trading_Faramarz…

The objective is not to memorize another indicator.

It is to understand enough of the machinery behind the options market to know when Gamma information may matter, how it may affect intraday behavior, what evidence should confirm it, and when the correct decision is to ignore it completely.

Gamma Exposure Trading is designed for active traders, index and futures traders, options traders, market-structure students, and anyone who has seen terms such as GEX, Gamma Flip, Call Wall, Put Wall, Dealer Gamma, or 0DTE positioning and wants to understand the actual logic behind them.

See the market you already trade from a layer most candlestick charts never show.