Stochastic oscillators are a popular technical indicator in Forex business used to identify overbought and oversold market conditions. The indicator measures the level of a security's closing price relative to its trading range over a specified period. Stochastic oscillators consist of two lines - %K and %D - that oscillate between 0 and 100. Traders typically look for the %K line to cross above or below the %D line to generate buy or sell signals. Stochastic oscillators are best used in conjunction with other technical and fundamental analysis tools to make informed trading decisions.