The RISK PROBABILITY CALCULATOR is a useful tool for swing traders who use Fibonacci retracements and expansions for entries and exits. Traders just need to plug in the necessary points of the swing. Point A is the start of the swing, point B is the point where the swing stopped and retraced and Point C is where the retracement ended and the market resumed its previous direction. Point C is set at the 38.2% Fibonacci retracement by default.