The Squeeze Momentum Indicator combines Bollinger Bands, which measure volatility by using standard deviations, with the Keltner Channel, which measures the Average True Range (ATR). Traders look for the Bollinger Band to move outside the ATR indicated by the Keltner Channel, which suggests an increase in momentum. The Squeeze Momentum Indicator uses black dots to indicate no trading signal, red dots for sell signals, and green dots for buy signals. A crossover from red to green or from green to red suggests a momentum change and tends to offer the most reliable signal.