Both scalping and momentum trading are styles in which positions are not held open overnight. In some cases, scalpers might only hold a position for a few minutes. Both styles rely on finding the most active stocks or other assets and taking advantage of fast-moving price volatility. The scalper and momentum trader needs to be able to rapidly process information and trade without fear or hesitation. The biggest benefit of both styles is having no risk of overnight moves in markets since both styles are flat at the close of each trading day.