Technical traders use this indicator to identify periods in which an asset’s price will experience a significant movement. It consists of a series of vertical lines that correspond to the sequence of numbers known as Fibonacci numbers (1, 2, 3, 5, 8, 13, 21, 34, etc.). Once a trader chooses a starting position (most commonly following a major move) on the chart, a vertical line is placed on every subsequent day that corresponds to the position in the Fibonacci number sequence.