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.

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 / ...

Novice investors usually go on a “Holy Grail quest” early on, reading books and watching videos and searching for that elusive one indicator to rule them all. After 23 years of analyzing the markets ...