The Momentum Indicator (MOM) is a leading indicator measuring a security's rate-of-change. It compares the current price with the previous price from a number of periods ago.The ongoing plot forms an oscillator that moves above and below 0. It is a fully unbounded oscillator and has no lower or upper limit. Bullish and bearish interpretations are found by looking for divergences, centerline crossovers and extreme readings. The indicator is often used in combination with other signals.