Risk & Volatility / Scatter Interpretation
#49 How to Read a Sigma-Gamma Scatter Chart for Market Risk
Updated 05/07/2026 / 13 min read
1) What The Scatter Chart Shows
The sigma-gamma scatter chart combines two ideas: how stretched price is versus its normal range, and whether dealer-like positioning conditions are likely to suppress or amplify movement. The chart is not a prediction engine. It is a regime map for risk behavior.
- Sigma axis: distance from recent statistical range.
- Gamma-like axis: whether flows may dampen or accelerate price movement.
- Cluster movement: more important than one isolated dot.
2) Quadrant Guide
| Quadrant | Meaning | Trade Behavior |
|---|---|---|
| High sigma / positive gamma-like | Stretched but potentially pinned. | Take profits, avoid aggressive fades. |
| High sigma / negative gamma-like | Stretched and unstable. | Expect wider ranges and faster reversals. |
| Low sigma / positive gamma-like | Compressed and stable. | Mean reversion or range trades favored. |
| Low sigma / negative gamma-like | Compression with breakout risk. | Prepare for expansion, wait for trigger. |
3) How To Use It
- 1. Locate the current point and nearby historical cluster.
- 2. Check whether the point is moving toward stability or instability.
- 3. Confirm with price level, breadth, volume, and macro event calendar.
- 4. Adjust size before volatility expands, not after.
4) Mistakes To Avoid
Do not treat the scatter chart as a standalone buy/sell signal. It is strongest when used to decide whether to reduce size, wait for confirmation, or expect a wider stop requirement.
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