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.
In the world of technical analysis, there is one reliable indicator for measuring market risk. The relative strength index measures overextension. Investors commonly use a lookback period of 14 days ...
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 / ...
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