and added that Sigma Lithium is one of the many mining options the electric-vehicle maker is exploring as it mulls its own refining. U.S. stock of Sigma Lithium, which has a market capitalization of $3.21 billion, nearly trebled in value last year. Tesla and Sigma Lithium did not immediately respond to Reuters requests for comment.
Chief executive Elon Musk said last year Tesla was open to buying a mining company if producing its own supply of electric vehicle metals would speed up worldwide adoption of clean energy technologies. The company already has supply contracts for nickel, lithium and a range of other EV metals from suppliers across the globe. (Reporting by Tiyashi Datta in Bengaluru; Editing by Shinjini Ganguli)
