What Is A Rounding Top Chart Pattern ? A chart pattern used in technical analysis which is identified by price movements that, when graphed, form the shape of an upside down “U” . A rounding top may form at the end of an extended upward trend and indicates a reversal in the long-term price movement. These rounding charts deal with rounding to the nearest ten's decimal place. This is the first rounding task that a student will typically encounter, and it is the fundamental skill needed when rounding to other precisions to the left or to the right of the decimal. By looking at rounding in the context Rounding Top is a rally to a new high on strong volume, several weeks of light trade with limited upside progress, several more weeks of light trade with a decided downward bias, followed by a sharp move lower on strong volume. Unlike Head and Shoulders top patterns, Rounding tops generally do not lend well to price targets because the pattern is meandering.