T or Peterson is a prominent American commodities trader who became a billionaire as a senior executive at Glencore, the massive Swiss-based mining and commodity trading giant. He joined Glencore in the 1990s and was tasked with building the company's coal trading division. He successfully built its coal trading desk into one of the most powerful and profitable in the world, becoming a major figure in the global energy markets.

He was one of the key senior executives and a major shareholder who became a billionaire after Glencore's massive initial public offering in 2011, one of the largest in history. He served as the head of the coal trading division for many years, overseeing a massive global operation. He retired from the company in 2019 but remains a significant shareholder. He is known for being media-shy and for maintaining a low public profile, in keeping with the secretive culture of the commodity trading world.