Chande momentum oscillator or CMO developed by Tushar Chande shows the momentum of the underlying security. CMO is similar to Relative Strength Indicator, Rate of Change indicator and Stochastic Oscillator but differs from them in many ways. It uses the data of both up days and down days, uses no smoothing of data and does not hide any short-term movements; but like other oscillators it is ranged between +100 and -100.

Chande momentum oscillator is the difference between the sum of all gains and the sum of all losses for a period divided by the sum of all price movements. The formula for CMO is,


Where Su is the sum of the difference between current and previous closes on up days and Sd is the sum of the difference between current and previous closes on down days.

Positive values of Chande momentum indicator show bullish trends and negative values show bearish trends. Oversold level is identified when CMO is below -50 and overbought level is identified when CMO is above +50. The 0 level is used to identify the change in momentum. With CMO, many traders use a (nine period) simple moving average to generate buy and sell signals. Buy signals are generated when the oscillator crosses above the signal line, and sell signals are generated when the oscillator crosses below the signal line.

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