Apple the most valuable company ever – worth $619 billion

Apple Becomes Most Valuable Publicly-Traded Stock Ever Microsoft’s market capitalization peaked on December 30, 1999, reaching an intraday high of $119.94 per share. With Microsoft having documented 5,160,024,593 outstanding shares the company would have had a market capitalization of $618.89 billion on December 30. Apple’s most recent quarterly filing listed 937,406,000 outstanding shares as of …