Full Stochastic Oscillator (Full STO) is one of forex technical indicator used in forex technical analysis. Full Stochastic Oscillator (Full STO) combine the Slow Stochastic and the Fast Stochastic.

Developed by George C. Lane in the 1950′s, the Stochastic Oscillator comes in 3 flavors: Fast, Slow, and Full. The Stochastic Oscillator is a momentum indicator designed to show the relation of the current close price relative to the high/low range over a given number of periods using a scale of 0-100.

The Full Stochastic Oscillator is more advanced and more flexible than the Fast and Slow Stochastic and can even be used to generate them.

The Stochastic Oscillators are typically plotted as 2 lines: %K and %D. %K is the main (fast) line and %D is the signal (slow) line.

Readings above 80 act as an overbought signal while readings below 20 act an oversold signal. However, even if the Stochastic Oscillator has reached 80 securities can continue to rise. Similarly even after it has reached 20 it can continue to fall.