Leading indicator
An indicator designed to signal a possible move before it happens, usually by measuring momentum or extremes — RSI or Stochastic, for example.
In technical analysis, leading indicators try to anticipate turns rather than confirm them. Oscillators such as RSI, Stochastic, Williams %R and CCI are the usual examples: they flag overbought or oversold conditions and divergences before price reverses — when it does reverse.
The word “leading” oversells them. They are still calculated from past prices, just with short lookbacks and formulas that react quickly. Their signals arrive before confirmation, which is exactly why many of them turn out wrong. In a strong trend a leading indicator can call a reversal again and again while price keeps going.
Economists use the term differently: leading economic indicators, such as business surveys, tend to change before the wider economy does. Same name, different idea.
Used sensibly, leading tools work best:
- in ranges, where turns are frequent;
- in the direction of a trend defined by something slower, such as buying oversold dips in an uptrend;
- with price confirmation, like a rejection candle at a level.
The usual pairing is one lagging tool for direction and one leading tool for timing. See combining indicators and lagging indicator.
Stochastic on M5 crosses down from 85 while EUR/USD is still rising. Price climbs another 8 pips before peaking, so a 1-minute Lower trade taken on the first signal would have lost.