MACD

Moving Average Convergence/Divergence is an indicator used to reveal changes in the direction, momentum, and duration of a trend in a stock’s price. It shows the relationship between two moving averages. The MACD subtracts the 12-day EMA from the 26-day EMA, and combines this with a 9-day EMA and a zero line. 

A cross by the MACD to the upside is bullish, and to the downside is bearish. A cross above the zero line is bullish and a cross below the zero line is bearish. When the stock price moves higher (lower) as the MACD moves lower (higher) this is a divergence of the MACD from the stock price and indicates a possible trend change.