Warren Buffett's Apple stake is worth $169 billion — more than the value of many S&P 500 companies

• Warren Buffett's piece of Apple is worth $169 billion, or more than 450 of the S&P 500 companies.
• Berkshire Hathaway pared its stake by 13% last quarter; it would have been worth $194 billion.
• Apple stock has surged by 25% in under three months to a record high, helped by AI buzz.

Warren Buffett's stake in Apple is worth more than 450 of the S&P 500 companies following a surge in the iPhone maker's stock over the past six weeks.

Buffett's conglomerate, Berkshire Hathaway, owned about 790 million Apple shares worth $135 billion at the end of March, company filings show.