说一下动能指标 relative strength

一种测量动能的方法是BID提供的RS, 测量一只股票在12月内与大盘指数回报的关系，比大盘回报越高，其RS指数就越高。这个RS是IBD独家的与平时到处可查到的RS, 完全不是一回事。当然RS是建立在历史数据上的，虽然有惯性，但也必须与其他基本面相结合才行。
转：In the context of Investor’s Business Daily (IBD), Relative Strength (RS) refers to how a stock’s performance compares to the rest of the market over a specific period, usually 12 months. The Relative Strength Rating is a key IBD metric that ranks stocks on a scale from 1 to 99, with 99 being the highest. A stock with a high RS Rating is outperforming most other stocks. IBD often looks for stocks with an RS Rating of 80 or higher when identifying strong candidates for investment.