Take a look at the strong crossover of the MACD signaling lines that occurred in mid-June.

This event is marked by the little green up-arrow on the MACD indicator graph. The arrow corresponds to the start of the green bar over the price graph. When this happens to a stock, it's said to have "gone MACD green."

What makes the MACD crossover that occurs in mid-July a "nice divergence?" For one thing, the crossover occurred above the centerline. This is most important, because it shows that this stock is in good shape from the get-go and not coming off a steep sell off.