This unique blend of trend and momentum can be applied to daily, weekly or monthly charts. The standard setting for MACD is the difference between the 12 and 26-period EMAs. A buy signal can be indicated when the price level is decreasing while the Chaikin Oscillator starts to increase. This is because this can sometimes be an indicator that an uptrend is on its way. Conversely, a sell signal can be indicated when the price level is increasing while the Chaikin Oscillator starts to decrease.