How the Relative Strength Index (RSI) Works As a momentum indicator, the relative strength index compares a security's strength on days when prices go up to its strength on days when prices go down.

Trading indicators are often touted as the holy grail of trading but that is simply not true. They are a useful trading tool that should be used in conjunction with a well rounded trading plan but are ...

Learn how to measure the magnitude of price changes in 11 minutes Gordon Scott has been an active investor and technical analyst or 20+ years. He is a Chartered Market Technician (CMT). Investopedia / ...