Finding the right stock is the key to successful investing, but it’s never as easy as it sounds. The answer to the question, which stock to buy? is no secret, but it is hidden, in the avalanche of data that the markets produce. What’s needed is some clear signal that will cut through the noise and indicate the right stocks for the times. The quantity of data, and the sheer impossibility of parsing all of it in real time, makes a formidable barrier to successful stock picking – but Wall Street’s