World's most valuable firm Apple has just 1 billionaire

Apple Chairman Arthur Levinson is the only billionaire in the world's most valuable company, with a fortune of $1 billion, according to Bloomberg. Apple stock accounts for 20% of the fortune of Levinson, who once served on Google's board. Notably, Apple has a market capitalisation of $874.96 billion while its CEO Tim Cook's net worth stands at $600 million.