Within financial academia, there are three main groups of thinking regarding public equity pricing, all of which stem from the efficient-market hypothesis and depend on it to varying degrees. The strong form of market efficiency thinkers believe stock prices reflect all information that can be known about any business, including insider information, and that stock prices are wholly unexploitable for above-average risk-adjusted returns.
The Basics of Deep Value Investing
A few years ago I had a blog in which I used to post about the details of deep value investing and some of the methods by which an investor could go about exploiting market inefficiencies. Those posts weren't ever brought over to this site and it dawns on me that despite explaining some theoretical concepts, I've never explained much of anything about how I have been generating our performance over the past few years in basic, practical terms for anyone interested in hearing about it.