Moving Average Convergence Divergence (MACD) MACD stands for Moving Average Convergence Divergence and was first developed by Gerald Appel in the late 1970s. It is an Absolute Price Oscillator (APO) and can be used in an attempt to identify changes in market direction, strength and momentum. It calculates the convergence and divergence between a ‘fast’ and a ‘slow’ Exponential Moving Average (EMA) known as the MACD Line. A signal EMA is then plotted over the MACD ...