Are you also considering time lagged correlations?
To me I don't care if a certain stock is correlated by something, I would more like to know which stocks do have correlations or if there are correlations with a time lag
To me I don't care if a certain stock is correlated by something, I would more like to know which stocks do have correlations or if there are correlations with a time lag
Of course, the problem with something like this is that using it would, of course, ultimately change the market so that x→0.