Bloomberg / Getty Images The relative strength index (RSI) is a momentum indicator that measures recent price changes as it moves between 0 and 100. The RSI provides short-term buy and sell ...

In 1978, Welles Wilder Jr. introduced the Relative Strength Index (RSI). The RSI identifies overbought and oversold readings that predict cycle reversals by analyzing the characteristics of recent ...

The author and editors take ultimate responsibility for the content. The Relative Strength Index, or RSI, is a technical indicator that measures the speed and size of price changes in a security.