Nvidia briefly reached a market capitalization of $4 trillion on Wednesday, making it the first company in the world to reach the milestone and solidifying its position as one of Wall Street's most-favored stocks.

The stunning rise of Nvidia to become the first publicly traded company valued at US$4 trillion underscores the massive importance to the stock market of the AI chipmaker and the technology sector. Reaching the lofty milestone caps a massive run for Nvidia's stock price,

Even at record highs, Nvidia’s stock may not be as expensive as it is touted to be. Some valuation metrics suggest room for upside