Nvidia's stock price just reached $1,000.Nvidia (NVDA 9.32%) has wowed investors again, reporting record quarterly revenue and earnings that beat analysts' estimates. This week, the company announced triple-digit gains in quarterly revenue and net income as demand for its artificial intelligence (AI) products and services soared. Nvidia dominates the AI chip market, holding 80% share, and these results show the company is maintaining its leadership.Still, some investors have worried about Nvidia's ability t ...