Why Summit Therapeutics Stock Slipped Today

Summit Therapeutics (SMMT -2.25%) stock did better than a lot of other equities during an otherwise forgettable trading session on Wednesday. In contrast to other titles that fell notably, Summit more or less kept pace with the S&P 500 (^GSPC -1.12%), managing to dip by a relatively modest 2.25% in price. Some investors, at least, were cheered by an analyst's recommendation upgrade on the stock.The high potential of a licensed drugWell before market open, Citigroup pundit Yigal Nochomovitz changed his recom ...