A head and shoulders pattern is a technical indicator with a chart pattern of three peaks, where the outer two are close in height, and the middle is the highest. A head and shoulders pattern—considered one of the most reliable trend reversal patterns—is a chart formation that predicts a bullish-to-bearish trend reversal. An inverse head and shoulders pattern predicts a bearish-to-bullish trend. The neckline rests at the support or resistance lines, depending on the pattern direction.