Just signed up to DSC, read a couple posts by experienced people Vincent Granville, and others. Wanted to pose a big-picture question:
Is it generally common practice for model makers to predict pricing for stock X, based on a relationship with some other stock Y? For example, perhaps some sort of correlation or covariance analysis?
Is anyone aware of a school of thought that simply examines stock X, directly, and determines its expected future price, directly?