The volume of shares traded when a stock's price rises. It is one of the many indications used by investors to decide whether to buy or sell an asset. Uptick volume is often utilized by traders who use technical analysis—the technique of analyzing charts to observe movements and patterns in stock prices and volumes over time. Uptick volume is used to calculate a stock's net volume (the measure of its momentum) by subtracting the uptick volume from the downtick volume.