Tenaris S.A. (NYSE:TS – Get Free Report)’s share price hit a new 52-week high during mid-day trading on Thursday . Weiss Ratings reiterated a “hold (c)” rating on shares of Tenaris in a research report on Monday, December 29th. Finally, Wall Street Zen upgraded Tenaris from a “hold” rating to a “buy” rating in a research report on Saturday, January 17th. Four investment analysts have rated the stock with a Buy rating, four have given a Hold rating and one has assigned a Sell rating to the company’s stock. Optiver Holding B.V. now owns 905,328 shares of the industrial products company’s stock valued at $32,384,000 after acquiring an additional 589,625 shares during the period.