Red-hot tech companies like Nvidia (NASDAQ: NVDA) and Duolingo (NASDAQ: DUO) have already rewarded investors this year. With inflation high and consumer spending power under pressure, Nvidia has seen weakening sales for its discrete graphics processing units (GPUs), a type of hardware popular in high-end gaming computers. And CNBC reports that its successor, the H100, is selling for over $40,000 on third-party websites like eBay -- perhaps a sign of pent-up demand for its processing power as more companies build AI platforms.