A measure of the performance of a
stock relative to its
industry or the performance of an industry relative to the
market as a whole. A stock (or industry)
outperforming its industry (or market) for a given period of time has a relative strength index value above 1; this is seen as a
bullish sign for that stock (or industry). On the other hand, a stock (or industry)
underperforming its industry (or market) for a given period of time has a relative strength index value under 1; this is seen as a
bearish sign.