What is Call Volume? Call Volume is the total number of calls which traded yesterday. Why does Call Volume matter? The more calls that traded can often indicate a bullish tone of the market. This is not a proprietary SpotGamma metric and should be compared to the CP Gam Tilt and other SpotGamma Key Levels such as the Call Wall. How to use Call Volume Sentiment matters and you can develop your own strategy to either trade with momentum or turn contrarian (trade in the opposite direction) when the market becomes too bearish. This is not a proprietary SpotGamma metric and should be compared to the CP Gam Tilt and other SpotGamma Key Levels such as the Call Wall. Related articles What is Put Open Interest? What is Call Open Interest? What is Put Volume? What is a Call Wall? What is a Gamma Profile?