Milestones for Apple’s stock are falling rapidly in recent days, with another strong performance today pushing Apple past Microsoft for the title of most valuable publicly-trade stock ever, a distinction Microsoft has held since December 1999. Microsoft’s market capitalization peaked on December 30, 1999, reaching an intraday high of $119.94 per share.
Apple’s most recent quarterly filing listed 937,406,000 outstanding shares as of July 13, 2012, and with the company’s stock price hitting $660.73 today, its market capitalization reached $619.37 billion.
…In inflation-adjusted terms, Microsoft’s $618.89 market capitalization in December 1999 would be equivalent to roughly $842.5 billion in today’s dollars.
Groupon is all about discounts, but not this kind. The daily deal site’s shares plunged more than 25% to a record-low close Tuesday, little more than nine months since an IPO that valued the company at nearly $13 billion. The company’s stock price is off nearly 80% since then as investors flee a company they fear can’t sustain profits or growth—anxieties that Monday’s earnings report didn’t ease.