Z-Score (Price)
Standard deviations from the 20-period mean — equity quant.
What is the Z-Score?
The Z-Score measures how many standard deviations the current price is from its 20-period moving average.
Formula: Z = (Price - Mean) / StdDev
Interpretation Zones
- Z > +2: Overbought (price above mean)
- -2 to +2: Fair value (price near mean)
- Z < -2: Oversold (price below mean)
- Dashed line at 0 = price at moving average
Trading Applications
- Z > +2: Consider reducing long positions
- |Z| < 2: Normal range; follow existing trend
- Z < -2: Consider buying opportunities
Closer-Look Mode
- Auto-activates with single ticker; overlays close price on right axis
- Z > +2 + price at high = extended; Z < -2 + price low = oversold bounce
Shapes & Interactions
- Different shapes = different sectors/industries
- Different colors = different tickers
- Tap points for Z-Score values + interpretation
- Use preset buttons (1M, 3M, etc.) for date range
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