Skip to main content

GEX Heatmap Guide

Traditional and heatmap analysis in 10 minutes. Two views: Classic Charts and GEX Heatmap.

What is Gamma?​

Gamma measures how fast an option's delta changes as the underlying price moves. In trading terms, it shows where market makers must hedge their options positions - creating support, resistance, and volatility zones.

Understanding Gamma​

  • High Gamma: Market makers must hedge aggressively - Price pinning, support/resistance
  • Low Gamma: Market makers hedge less - Price can move freely
  • Positive Gamma: Stabilizes price - Support levels
  • Negative Gamma: Destabilizes price - Volatility zones

Why Gamma Matters​

  • Support/Resistance: High gamma strikes act as magnets
  • Volatility Prediction: Negative gamma = Higher volatility
  • Entry/Exit Points: Use gamma levels for better timing
  • Risk Management: Avoid negative gamma zones

Key Terms​

  • Gamma: Rate of change of delta
  • Gamma Exposure (GEX): Total gamma x open interest x contract multiplier
  • Delta Neutral: Where market makers hedge (usually at-the-money)
  • Pin Risk: Price "pinned" to strike by gamma

Two View Modes​

The Gamma module has two distinct views you can toggle between.

Classic Charts View​

What it shows: Traditional gamma exposure charts with strike analysis, Greeks, and time-based gamma distributions.

Best for:

  • Detailed strike-by-strike analysis
  • Gamma distribution patterns
  • Historical gamma trends
  • Precise entry/exit levels

Charts include:

  • Gamma exposure by strike
  • Total gamma exposure over time
  • Greeks analysis (delta, gamma, theta, vega)
  • Options chain data

GEX Heatmap View​

What it shows: Interactive heatmap showing gamma exposure across strikes and expirations.

Best for:

  • Visual market overview
  • Quick identification of support/resistance
  • Anchor point and defense lines
  • Real-time gamma positioning

Features include:

  • Color-coded strike matrix
  • Anchor point (highest GEX)
  • Defense lines (secondary support)
  • GEX flip points

Classic Charts View​

Understanding the Charts​

1. Gamma Exposure Chart

  • Shows: Total gamma exposure at each strike price
  • Use it to: Identify key support/resistance levels
  • Key insight: Highest gamma = Strongest support/resistance

2. Delta Distribution

  • Shows: Delta across strikes
  • Use it to: Understand market maker hedging needs
  • Key insight: Delta neutral = Price tends to hover here

3. Greeks Analysis

  • Shows: Delta, gamma, theta, vega by strike
  • Use it to: Analyze option pricing dynamics
  • Key insight: Greeks change as price moves

4. Time Decay (Theta)

  • Shows: How much premium decays per day
  • Use it to: Time your entry/exit
  • Key insight: Highest theta near expiration

Reading the Data​

Positive Gamma: Market makers must hedge by buying stock when price rises. Result: Stabilizes price, creates support. Favorable for range trades.

Negative Gamma: Market makers must hedge by selling stock when price rises. Result: Accelerates moves, creates volatility. Avoid trading in these zones.

GEX Heatmap View​

The GEX Heatmap view is identical to the dedicated GEX Heatmap module.

Quick Summary:

  • Color Coding: Green = Positive GEX (support), Red = Negative GEX (volatility)
  • Anchor Point: Brightest tile = Strongest support/resistance level
  • Defense Lines: Secondary high-GEX strikes (backup levels)
  • GEX Flip Point: Where gamma changes from positive to negative

Why Use Heatmap View?

  • Visual Overview - See entire gamma landscape at a glance
  • Quick Anchors - Instantly identify strongest levels
  • Pattern Recognition - Spot clustering and concentration

4 Trading Strategies​

Strategy 1: Target High Gamma Strikes​

Concept: Price gravitates toward high gamma strikes (maximum pinning effect).

Steps:

  1. Identify strike with highest gamma exposure
  2. If current price < high gamma strike = Long bias
  3. If current price > high gamma strike = Short bias
  4. Enter when price nears high gamma strike
  5. Target opposite high gamma strike (if it exists)
  6. Stop beyond next support/resistance

Strategy 2: Gamma Flip Point Exploitation​

Concept: Where gamma flips from positive to negative (volatility threshold).

Steps:

  1. Find GEX flip point from heatmap
  2. Below flip = Low volatility, range-bound
  3. Above flip = High volatility, explosive moves
  4. Below flip - Sell premium, iron condors
  5. Above flip - Buy premium, directional plays

Strategy 3: Negative Gamma Avoidance​

Concept: Avoid trading in negative gamma zones (high volatility, unpredictability).

Steps:

  1. Check gamma exposure chart or heatmap
  2. Identify negative gamma zones (red/purple on heatmap)
  3. These are high volatility zones - avoid entering trades here
  4. Wait for price to move to positive gamma zone
  5. Then enter in direction of support/resistance

Strategy 4: Time Decay + Gamma​

Concept: Combine time decay (theta) with gamma pinning near expiration.

Steps:

  1. Find strike with high gamma AND high theta
  2. This is 0DTE or 1DTE options
  3. Price will pin to this strike
  4. Sell premium at this strike
  5. Buy protection wings further OTM
  6. Let time decay work (theta) + pinning effect (gamma)

Complete SPX 0DTE Example​

Classic Charts View:

  • Gamma Peak: $6,700 strike
  • Current Price: $6,685
  • High gamma below = Support
  • Strategy: Buy calls targeting $6,700

Heatmap View:

  • Anchor Point: $6,700 (brightest green)
  • Defense Lines: $6,650, $6,750
  • GEX Flip Point: $7,000
  • Current price below anchor = Bullish gravity

Trade Entry:

  • Enter: Buy $6,690 calls at $8.00
  • Target: $6,700 (anchor point)
  • Stop: Below $6,650 (defense line)
  • Rationale: Price should gravitate to anchor

Exit Strategy:

  • Take profit at $6,700 if hit quickly
  • Or let it break above and ride momentum
  • Exit by 2 PM to avoid time decay
  • Profit target: 50-100% gain

Daily Workflow​

  1. 9:30 AM: Open Gamma module
  2. 9:31 AM: Select ticker (default: SPX)
  3. 9:32 AM: Toggle to GEX Heatmap view
  4. 9:33 AM: Find anchor point (brightest tile)
  5. 9:34 AM: Check current price vs anchor
  6. 9:35 AM: Plan trade based on gamma positioning
  7. Throughout Day: Monitor gamma changes

Decision Tree​

START - Open Gamma, ticker selected (SPX, QQQ, etc.)

  • GEX Heatmap - Visual overview

    • Find anchor (brightest tile)
    • Check price vs anchor
    • Below anchor = Bullish bias
    • At anchor = Neutral, pin
    • Above anchor = Bearish bias

  • Classic Charts - Detailed analysis

    • Find peak gamma strike
    • Note if positive or negative
    • Positive = Support/Resistance
    • Negative = Volatility zone (avoid)
    • Plan entry based on gamma

Top 5 Rules​

  1. High Gamma = Magnet - Price gravitates toward high gamma strikes
  2. Anchor is Key - The anchor point in heatmap is most important level
  3. Avoid Negative Zones - Don't trade in negative gamma zones (high vol)
  4. Use Flip Point - GEX flip point separates low vs high volatility
  5. Confirm with Price - Always check price action before entering

Common Questions​

Q: Which view should I use?
A: GEX Heatmap for quick overview, Classic Charts for detailed analysis.

Q: What's the difference between positive and negative gamma?
A: Positive = Stabilizes price (support), Negative = Destabilizes (volatility).

Q: Should I trade with or against gamma?
A: With gamma (toward high gamma strikes) = Easier. Against = Risky.

Q: How often does gamma change?
A: Daily as options expire and new ones are written. Check daily.

Q: Can I use this for individual stocks?
A: Yes! Enter stock ticker (AAPL, TSLA, etc.) instead of SPX.