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Basics
  • Number Series
  • Boolean Series
  • Examples
  • Indicators
Alarms
Concepts
  • Signals

    • Number Series
    • Boolean Series
    • Signal Examples
    • Indicators

      • Indicators
      • MFI (Money Flow Index)
      • ATR (Average True Range)
      • CCI (Commodity Channel Index)
      • CE (Chandelier Exit)
      • ER (Kaufman's Efficiency Ratio)
      • KC (Keltner Channel)
      • SMA (Simple Moving Average)
      • EMA (Exponential Moving Average)
      • MACD (Moving Average Convergence Divergence)
      • PPO (Percentage Price Oscillator)
      • RSI (Relative Strength Index)
      • FSO (Fast Stochastic Oscillator)
      • SSO (Slow Stochastic Oscillator)
      • BB (Bollinger Bands)
      • MAD (Mean Absolute Deviation)

FSO (Fast Stochastic Oscillator)

The FSO (Fast Stochastic Oscillator) is a momentum indicator that compares a particular closing price of a security to a range of its prices over a certain period of time. It is used to generate overbought and oversold trading signals, utilizing a 0-100 bounded range of values. A reading above 80 is considered overbought, and a reading below 20 is considered oversold. See also Slow Stochastic Oscillator (SSO).

Arguments

NameDescription
periodnumber of candles

Useful Signal Expressions

1. Stochastic Overbought

Signal:

close().fso(14).gt(80)

Explanation: The Fast Stochastic Oscillator is above 80, suggesting the security is overbought.

2. Stochastic Oversold

Signal:

close().fso(14).lt(20)

Explanation: The Fast Stochastic Oscillator is below 20, suggesting the security is oversold.

Last Updated:: 2/12/26, 8:03 AM
Contributors: ErenKizilay
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SSO (Slow Stochastic Oscillator)