Whoa! As of this writing (noon EST) Apple stock has reached a new high of US$493.85, which is a record share price. It also gives the company a market capitalization of $465 billion, which exceeds the combined totals of Google and Microsoft.
Apple passed Microsoft in Market Cap back in May of 2010. At the current price, Apple is comfortably ahead of Exxon Mobil, which has a market cap of about $400
Just yesterday we reported that Apple had gained $100 in share price since Steve Jobs died last October, but those numbers are already outdated.