why is vivus stock dropping?
Shares of Vivus (VVUS) are down 7.12% to $5.74 after Piper Jaffray downgraded the stock earlier today to"underweight" from "neutral." ... (VVUS) - Get Report are down 7.12% to $5.74 after Piper Jaffray downgraded the stock earlier today to "underweight" from "neutral."