Alphabet recently overtook Microsoft as the third-most valuable company in the world.No company in the technology industry has benefited from the rise of artificial intelligence (AI) as much as Nvidia (NVDA 2.27%). Over the last three years, shares of the semiconductor giant have soared by more than 970% -- propelling its market cap to $4.5 trillion and making it the most valuable company in the world.  By contrast, Alphabet's (GOOGL 1.00%) (GOOG 0.98%) price action was fairly muted throughout much of the A ...