http://www.forbes.com/profile/isaac-perlmutter/ 250th richest man Ike Perlmutter $3.7 billion Isaac Perlmutter Forbes’ lists of wealthiest Americans and world billionaires $1.7 billion fortune Isaac Perlmutter clocks in at #250 with $1.65 billion 520th richest person on earth Forbes Isaac Perlmutter clocks in at #250 with $1.65 billion