) are higher on the session by 1.20%, currently trading at $43.78. The stock had been moving largely higher over the past four months and is currently trading above the 50-day and 200-day moving averages. Options traders are buying calls on the name today. A short while ago the December $45.00 call was purchased 2,000 times, on the offer, on open interest of 3,808 contracts. Overall call volume is now running at 2.34x the daily average with 99% of all calls traded being purchases on the offer. Tenaris SA is a Luxembourg-based holding company active in the supply of tubes and related services mainly for the energy industry and certain other industrial applications. The customers of the company include oil and gas and engineering companies engaged in constructing oil and gas gathering, transportation and processing facilities.