Shares of Tenaris (TS) sink -11% premarket after investors remain disappointed by the Q2...

|About: Tenaris S.A. (TS)|By:, SA News Editor

Shares of Tenaris (TS) sink -11% premarket after investors remain disappointed by the Q2 earnings report. The stock has underperformed the energy market since the Libyan revolt began, but the firm stays positive saying global drilling activity is picking up in the Middle East and North America.