An indicator used to identify price tops and bottoms.
See Also:
Index: A compilation of the prices of several common entities (stocks) into a single number. An index is a group of stocks which can be traded as one portfolio, such as the S&P 500. Broad-based indexes cover a wide range of industries and companies and narrow-based indexes cover stocks in one industry or economic sector.
Relative Strength: A stock's price movement over the past year as compared to a market index.