Tesla CEO Elon Musk's net worth surged to $749 billion late Friday after the Delaware Supreme Court reinstated Tesla stock options worth $139 billion that were voided last year, according to Forbes' billionaires index.

Musk's 2018 pay package, once worth $56 billion, was restored by the Delaware Supreme Court on Friday, two years after a lower court struck down the compensation deal as "unfathomable."

Earlier this week, Musk became the first person ever to surpass $600 billion in net worth on the heels of reports that his aerospace startup SpaceX was likely to go public.