BUSINESS

Billionaire Goes To Battle With Apple Over Giant Cash Pile

** FILE ** In this Oct. 11, 2007 file photo, private equity investor Carl Icahn speaks at the World Business Forum in New Yor
** FILE ** In this Oct. 11, 2007 file photo, private equity investor Carl Icahn speaks at the World Business Forum in New York. Antagonistic investor Carl Icahn became a billionaire by bullying already distressed companies, but his harassment of Yahoo Inc. could leave him with a black eye, and a big hole in his pocket, if he's wrong about Microsoft Corp.'s desire to buy the Internet pioneer. (AP Photo/Mark Lennihan, file)

The richest man on Wall Street is opening a new front in his quest to persuade Apple to part with more of its massive cash stockpile.

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