In my ongoing effort to find the best rail stock to invest in, I’m going to analyze Norfolk Southern Corporation ( NSC ) in the same way I recently reviewed its competitor, CSX Corporation (I'm a quant investment newsletter writer who marries fundamental analysis with the latest research in momentum. Over the past few years, I’ve developed a piece of software that helps me track the level of optimism and pessimism embedded in stock price. I seek to challenge the assumptions embedded in price by profitably e ...