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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