Looks like that combo has paid off for him. On Thursday, the retail and tech giant he founded reported earnings that blew away Wall Street estimates, sending shares up 10% in trading Friday. In turn, Bezos also brought in a pretty penny overnight—roughly $5.1 billion based on his shares in the company.

Bezos is no stranger to seeing his wealth multiply overnight. In 1998, a year after Amazon went public, his net worth was $1.9 billion. One year later, that number became $9 billion, according to Wired. By 2010, Bezos’s wealth grew to $12.6 billion, and by the start of 2015, his’ net worth was about $28 billion.

After Amazon’s stock’s steep upward rise Friday, Bezos’s worth shot up once again to $59 billion, making him No.4 on Bloomberg’s Billionaire Index—displacing Mexican business mogul Carlos Slim who, in turn, lost $3.4 billion on Thursday, after his phone company, America Movil SAB reported weak sales.

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Bezos owns 17.6% of Amazon, or about 83 million shares. Due to his large stake in the company, he does not get additional stock awards as part of his compensation package. Instead, Bezos earned a base salary of $81,840 in 2015. Amazon also paid $1.6 million for his personal security. Neither his salary nor his security pay has changed in the past three years.