Stocks Hitting 52-Week Highs

shares reached a new 52-week high of $720.87. Amazon shares have gained 64.99 percent over the past 52 weeks, while the S&P 500 index has dropped 2.67 percent in the same period.

shares touched a new 52-week high of $64.19. SunTrust Robinson Humphrey upgraded WebMD Health from Neutral to Buy.

shares rose 1.82 percent to reach a new 52-week high of $2.62. Wi-LAN shares have surged 19.53 percent over the past 52 weeks, while the S&P 500 index has declined 2.67 percent in the same period.

shares touched a new 52-week high of $27.255. Kraton Performance Polymers shares have gained 13.89 percent over the past 52 weeks, while the S&P 500 index has slipped 2.67 percent in the same period.