Updated:
Option Levels/Envelopes plots three key gamma levels directly on your price chart as horizontal lines - Zero Gamma, Major Gamma, and Minor Gamma. These levels help you identify where dealer hedging activity is likely to be most concentrated, giving you a structural framework to understand potential support, resistance, and regime changes in the market.

Note: Option Levels/Envelopes is available on NDX, QQQ, SPY, and SPX.
How to Add Option Levels/Envelopes
Go to New in the top menu
Click on Option Chart

A Select Instrument dialog will appear with the following options:
NDX - Symbol: NQ-CME, Exchange: CME
QQQ - Symbol: NQ-CME, Exchange: CME
SPX - Symbol: ES-CME, Exchange: CME
SPY - Symbol: ES-CME, Exchange: CME

Select your preferred instrument and click to open the chart
Once the Option Chart is loaded, click the Indicator Add button on the chart toolbar
Search for Option Levels/Envelopes and click + to add it
Click the settings icon to open the configuration window

Settings
Parameters
General
Data source - Choose how the gamma levels are calculated. Options available:
Gamma volume (default) - calculates levels based on volume multiplied by the gamma greek, giving you a more accurate picture of actual dealer exposure
Volume - calculates levels based on raw options volume, showing where the most contracts are concentrated regardless of gamma weighting
Expiration - Filter levels by expiration. Options available: 0 DTE, <= 1d, <= 2d, <= 3d, <= 4d, <= 5d, <= 6d, <= 7d, <= 31d, <= 91d, All expirations. Default is All expirations
Include Carry or Open Interest - When enabled, includes open interest carried over from previous sessions into the calculation, giving you a broader view of total positioning. When disabled, only the current session data is considered. Default is disabled

Plot SettingsGeneral
Plot mode - Choose how the levels are displayed on the chart. Options available:
Levels - plots the gamma levels as static horizontal lines at fixed price points
Developing (default) - plots the levels as they develop in real time throughout the session, updating as new data comes in
Extension
Extension sessions - Set how many previous sessions the levels are extended across. Default is 3
Extension mode - Choose how the level lines are extended. Options available:
None (default) - no extension, levels are plotted only for the current session
Till interaction - extends the line until price interacts with it
Till end window - extends the line to the end of the visible chart window
Label
Text size - Set the font size for the level labels. Default is 11
Custom header - Add a custom label text to the levels if needed

Subgraphs
Zero Gamma (1)
Zero Gamma is the most important level. It represents the price point where dealer gamma exposure flips from positive to negative. Above this level dealers are long gamma and will dampen price moves. Below it dealers are short gamma and will amplify price moves.
Color - Default is yellow/gold
2° Color - Set a secondary color
Subgraph Style - Choose between Line or Hidden. Default is Line
Auto Color - Options: None, Slope, +/-. Default is None
Line Style - Choose between Solid or Dash. Default is Solid
Line Width - Default is 1
Short Name - Set a custom label for this series
Name Label - Toggle visibility of the name label
Value Label - Toggle visibility of the value label
Name Background - Toggle the name label background
Value Background - Toggle the value label background
Chart color for marker - Enable to use chart color for markers
Include on Auto Center - Enable to include this series in auto centering. Default is disabled

Major Gamma (2)
Major Gamma represents the highest concentration of dealer gamma exposure above the current price. This is where the most significant resistance or support from dealer hedging is likely to appear.
Color - Default is green
2° Color - Set a secondary color
Subgraph Style - Choose between Line, Hidden, or BrokerLine. Default is BrokerLine
Auto Color - Options: None, Slope, +/-. Default is None
Line Style - Choose between Solid or Dash. Default is Solid
Line Width - Default is 1
Short Name - Set a custom label for this series
Name Label - Toggle visibility of the name label
Value Label - Toggle visibility of the value label
Name Background - Toggle the name label background
Value Background - Toggle the value label background
Chart color for marker - Enable to use chart color for markers
Include on Auto Center - Enable to include this series in auto centering. Default is disabled

Minor Gamma (3)
Minor Gamma represents the secondary concentration of dealer gamma exposure. It acts as a softer level compared to Major Gamma and can be useful for identifying intermediate reaction zones.
Color - Default is purple
2° Color - Set a secondary color
Subgraph Style - Default is BrokerLine
Auto Color - Options: None, Slope, +/-. Default is None
Line Style - Choose between Solid or Dash. Default is Solid
Line Width - Default is 1
Short Name - Set a custom label for this series
Name Label - Toggle visibility of the name label
Value Label - Toggle visibility of the value label
Name Background - Toggle the name label background
Value Background - Toggle the value label background
Chart color for marker - Enable to use chart color for markers
Include on Auto Center - Enable to include this series in auto centering. Default is disabled


Example - How to Use Option Levels/Envelopes
Once added to your chart, you will see three types of lines plotted directly on your price chart:
The yellow line is the Zero Gamma level - this is the most important level. Think of it as the dividing line between two different market regimes. When price is trading above it, the market tends to be calmer and moves are more likely to fade. When price breaks below it, the market can become more volatile and moves can extend further
The green lines are the Major Gamma levels - these act as significant zones where dealer hedging activity is concentrated. Price often reacts at these levels, either finding support or facing resistance
The purple line is the Minor Gamma level - this acts as a softer secondary reference zone, useful for identifying intermediate reaction points

A simple way to use this indicator is to note where price is relative to the Zero Gamma level at the start of your session. If price is above it, expect a more compressed market where breakouts may fail. If price is below it, expect more directional moves and be cautious about fading strong moves.
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