Apple's (AAPL) market cap touches $400B for the first time ever before falling back to $399B....

|About: Apple Inc. (AAPL)|By:, SA News Editor

Apple's (AAPL) market cap touches $400B for the first time ever before falling back to $399B. Apple remains behind Exxon as the U.S.'s second most valuable public company, with the oil giant worth $416B. The next largest is Microsoft, although it's way behind at $238B.