Trading at a forward price-to-earnings ratio (P/E) of 23 times based on this year's analyst estimates and a price/earnings-to-growth (PEG) ratio of near 0.4, Nvidia ( NVDA 0.31% ) finds itself in the bargain bin. Stocks with PEGs under 1 are typically considered undervalued, and it's difficult to find companies that have been growing as quickly as Nvidia.