Apple, world's most valuable company, seeds few of world's biggest fortunes

CEO Tim Cook has a $600 million fortune, which reflects a pay program that's restrained relative to the company's size and performance

Finding billionaires in Silicon Valley isn’t hard. Dropbox Inc.’s Arash Ferdowsi and Veeva Systems Inc.’s Peter Gassner have both crossed the threshold this year, and tech fortunes make up a fifth - or about $1 trillion - of the Bloomberg Billionaires Index.

But tracking down members of the three-comma club at Apple Inc. is a less fruitful endeavor, even though the iPhone-maker is the world’s most valuable company, with a market capitalization of $879 billion.

Chairman Art Levinson is the only insider to make the cut, and Apple stock accounts for just 20 percent of his $1 billion fortune, according to regulatory