CAPM is a single period model, however the period is not specified (could be a week, a day, a month or even a year)
ICAPM, APT can be expand to multi-period framework.
小妹的问题是，这个multi-period model 到底是个什么概念啊？ 假如我们assume a month as a period, 是说我们可以用这个model 去定价一个n period horizon 的stock么？（for example, the time horizon is 3 months which is 3 period s as we defined before)

然后这个ICAPM 又说是continuos time下的，这个continous time是不是就是说无论我们的investment horizon是什么，这个model都work呢？

多谢大侠们指点