Gamma Analysis
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How to Read Gamma Analysis
A framework for studying where option Delta may change fastest across the selected strike range.
Most important nuance
Gamma is convexity sensitivity, not a forecast of realized volatility or dealer direction. It can change rapidly near expiry.
What It Tracks
Map CE and PE Gamma around ATM.
Best Comparison
Compare Gamma with Delta and time remaining.
Strongest Use
Track concentration as spot moves.
Main Risk
Use liquid contracts and correct model inputs.
Functionality Available on This Page
Absolute or Percentage Change
Switches between Gamma levels and percentage change through time.
CE and PE Comparison
Plots call and put convexity sensitivity across the selected strike range.
Gamma Statistics
Summarizes current, average, high, low, and percentile context for both sides.
Environment Insights
Flags elevated or low Gamma, skew, and recent Gamma changes alongside price movement.
Chart Overlays
Supports breakout lines, running averages, and volume-weighted reference lines.
Replay and Timeframes
Provides historical playback, selectable speed, and interval controls for near-expiry changes.
Terminology Traders Actually Need
Average Gamma Curvature Level
Average Gamma summarizes how rapidly option Delta is expected to change for the selected strikes and side.
Market Reading
Compare CE and PE values around ATM and keep expiry and strike window constant.
India Market Context
Near-expiry Indian index options can show very high ATM Gamma because little time remains.
Caveat
Gamma is model-derived and can change sharply when spot, IV, or time changes.
Gamma Change Percentage Sensitivity Shift
Change in Gamma percentage shows how the modeled curvature has moved from the comparison snapshot.
Market Reading
Use the chart overlay and statistics to distinguish a broad shift from one-strike noise.
India Market Context
Weekly expiry and fast ATM migration can produce large percentage changes from a small base.
Caveat
Percentage changes can look extreme when the earlier Gamma value was close to zero.
Gamma Percentile Relative Context
A percentile places the current Gamma reading within the page’s available historical or replay distribution.
Market Reading
Use percentile and distribution statistics to judge whether the current reading is ordinary or unusually concentrated.
India Market Context
Compare like-for-like sessions because event days and expiry days have different Indian index Gamma behavior.
Caveat
Percentile describes relative history, not the probability of a particular price move.
How to Use This Page
Select the Gamma Question
Use Average Gamma for level analysis or Change in Gamma percentage for repricing.
Center the Strike Window
Anchor the selected strike and include enough neighbors to see the ATM curve.
Compare CE and PE
Check whether Gamma concentration is balanced or dominated by one side.
Replay With Statistics
Use overlays, percentiles, and historical controls to verify persistence.
Frequently Asked Questions
Why is Gamma usually largest near ATM?
ATM options often have Delta most responsive to spot changes, especially when little time remains.
Why can Gamma percentage change spike?
A small prior value, fast spot move, IV shift, or expiry compression can magnify the percentage.
Does high Gamma predict direction?
No. Gamma measures Delta curvature; direction still depends on position signs and the underlying move.
Why use historical replay for Gamma?
Replay shows whether the current Gamma concentration persisted, migrated with ATM, or appeared in only one snapshot.
Continue your market analysis
Related options modules to validate the signal from another angle.