Sorry, not drinking your koolaid. Any exploitable "stat arb" will go to zero as it's exploited, or if it grows large it will move the market. There are no statistical axioms which are guaranteed to make you money, because if there were it would change once enough people discovered it. Anyone that's far out enough ahead can find these things for a while, but there's no way the average investor ever gets close to it, they're not exactly cold-calling senior citizens with these amazing opportunities.