The share price of Tenaris S.A. (NYSE:TS) fell by 4.25% between December 17 and December 24, 2025, putting it among the Energy Stocks that Lost the Most This Week. Analysts Advise Caution on Tenaris (TS) Tenaris S.A. (NYSE:TS) is the leading manufacturer of pipes and related services for the global energy industry and certain other industrial applications. The company also supplies pipes and tubular components for low-carbon energy applications. Morgan Stanley assumed coverage of Tenaris S.A. (NYSE:TS) ...