何谓盈亏投资股票若胜率高,只要分母够大,买的次数够多就能赚钱。但是要维持高胜率赢钱并不容易,我们的目标应该是稳定的获利,维持大赚小赔的模式,那要如何做到呢?最有效的方式就是设好风报比,跟提高胜率相比,风报比是一个相对可控的指标。很多老手对自己的风报比要求在3倍左右。 风报比就是风险与报酬的比率,也就是输多少和赢多少的比率。风报比这个数值的意义,可以反映出一个投资者,在承受了1单位的亏损之后,可以实现多少单位的获利。假设你对一档股票的预期获利为30%,而在亏损10%则停损卖出,那么这趟股票交易的风险报酬比就是1:3。这样的概念可以套用在设停损停利。举例来说:某股票于股价100元买进时,若我们预估股价这波可上看130元以上,便可于130元以上分批停利,此时停损则可设于90元。如果停利出场的幅度永远大于停损出场的幅度,那么就能做到大赚小赔,例如,把风报比设定为1:3,如果十次赢三次(胜率三成,赔率七成) ,照胜率来讲表现是不好的,但由于风报比的关系,就算只赢三次,仍然可以赚到两成报酬。 算式如下: (3X30%)+(7X-10%)=90%-70%=20% 所以之前的文章常提到一个观念就是:当亏损达一定的幅度时就执行停损,但是当顺势做对了方向时,要发挥耐心死抱活抱,一次将整个波段吃到足。而这个观念,就是靠控制风报比来实践!
风报比概念
什么是风报比?!
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