Apple shares turned lower as the iPhone maker kicked off its Worldwide Developers Conference Monday. Read more on the event and what's at stake for Apple:

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Bloomberg journalists discuss today's biggest winners and losers in the stock market. Listen for analysis on the companies making news on Wall Street.

Apple's (NASDAQ: AAPL) stock price has shot up 14,760% in the past 20 years thanks to the budding popularity of its hardware devices and software solutions that have won over consumers across the globe. Even in the past five years, investors have been rewarded with a 150% gain (as of June 4).

Two of the top AI companies today are also two of the stocks in the Berkshire Hathaway portfolio. Many investors know that Buffett loves an undervalued stock. But when explaining how he chooses stocks,

Apple's stock has been one of the weakest Big Tech stocks this year, partly reflecting worries about the company's artificial-intelligence positioning. Shares are down 18% so far this year. Within the "Magnificent Seven" grouping of large technology stocks,

U.S. stocks are holding relatively steady after a report suggested President Donald Trump’s tariffs are not pushing inflation much higher, at least not yet.