Nvidia ( NVDA 2.62%) is now the largest publicly traded company in the world, with a market capitalization of nearly $4 trillion. Wall Street is swooning over the stock in the days of major artificial intelligence (AI) investment.

Less than three months after the stock market plunged on President Donald Trump's "Liberation Day" tariffs announcement, major indexes are back near all-time highs. Investors have shrugged off concerns around tariffs and a potential economic slowdown as businesses adjusted to the new trade regime and as economic data so far around unemployment and inflation has been stable,