Justin Sullivan By Valuentum Analysts Gilead Sciences (NASDAQ:GILD) used to be a stock market darling. The firm's drug Sovaldi and its successor Harvoni, a once-daily oral treatment of hepatitis C [HCV] infection, were at one time its key product drivers and accounted for a large percentage of its product sales, but high cure rates and an increasingly crowded HCV market have materially cut its revenue from those products. Gilead is now adapting nicely to new opportunities, and we think it offers investors a ...