A prominent investor has drawn attention to a payments firm that boasts profit margins similar to those of NVIDIA Corporation (NASDAQ:NVDA) but is considered to be a more sustainable investment. What Happened: Hannah Gooch-Peters, a global equity investment analyst at Sanlam Investments, pointed out that the current valuation of Nvidia might be overestimating the company’s future sales and profits. She made these remarks during a CNBC Pro Talks session at the London Business School, reported CNBC. Gooch-Peters suggested that the sustainability of Nvidia’s profit margins should be questioned, g…