Besides price and fundamental data, there is a treasure trove of quantitative information about investor psychology that can be used for trading. We cover this in Course & Anticourse.
Technical Analysis provides several chart patterns. These are largely redundant.
This includes all the pages which have extensive data in them!
Price and volume have always been of interest to traders, but that basic data conceals much more information than it reveals. The Volume Ratio is one such piece of the bigger market puzzle.