yangzijiang 从图中可以看出，5-6月份股价不停创新高，而RSI（14d）却不停走低，形成了背离。这个时候就要警惕了，想到的不是去追高，而是是不是可以short一把。 (more...)

ya,, I think each indicator is only useful for particular market condition,,for eg.: RSI is best fit for a sideway market, while MA is more suitable for a trending market... For MA,,I believe no matter which ever time period you are using, as long as the market is trending, u will make money if your direction is correct and following your own defined rules. For RSI, I am sure you will be well returned if you short when RSI >70 and long when RSI (more...)

我也不是很懂，有一点浅见，首先不能用70/30判断超买/卖，这个很重要。而应该用背离。 在牛市里，RSI会长时间在70附近。此时反而应该看作股票是强势股。 为何要用背离，可以从RSI的原理上分析，rsi = 100 - 100/(1+rs)。rs = ave gain / ave loss。可见，ave gain 越大，ave loss 越小，rsi 就越大。rsi出现高位背离，说明ave gain小了，ave loss大了，也就是买力小了，卖力大了。而此时股价出现新高，就很可能not sustainable了。