Following this week’s shake-up of Apple execs (, Apple’s stock has slipped below US$600, the first time it’s closed below that figure since July (though for a brief period last Friday, Apple’s shares dropped to $591 before closing the day at $604).

Over the last year, Apple’s share price has swung from $363.32 to $705.07, notes “CNET.” As of this writing, the company’s market capitalization — a measure of corporate value — is about $557 billion. For more info go to$600-in-first-trading-day-after-exec-shakeup/? .