Metalloinvest accounts for the bulk of Usmanov’s fortune, which has swelled to more than $20 billion through timely bets on tech companies including Facebook Inc. (FB) (FB), according to the Bloomberg Billionaires Index, a daily ranking of the world’s richest people. Metalloinvest is worth at least $16 billion, valuing Moshiri’s share at a minimum of $800 million. The company values itself at as much as $20 billion, Chief Executive Officer Eduard Potapov said in February.
