How has Amazon CEO Jeff Bezos added US$6 billion to his fortune while other billionaires are losing money?

Ultrawealthy people across the globe have lost billions of dollars because of the coronavirus pandemic, but Jeff Bezos’s bank account is doing just fine.

Bezos’s net worth has soared US$5.9 billion in 2020 so far, according to the Bloomberg Billionaires Index. Bezos is the only person in the top five on Bloomberg’s Billionaires Index who hasn’t lost money in 2020, a review of the index shows.

Other billionaires, including Facebook CEO Mark Zuckerberg, have seen their net worth plummet as the novel coronavirus caused unprecedented market volatility. The ultrawealthy are often disproportionately affected by market sell-offs because of their equity-heavy portfolios. Billionaires across the globe lost 7 per cent of their collective net worth in 2018 because of market instability at the end of 2018, far more than ordinary 401k millionaires, according to reports from Wealth-X and Capgemini. Only one person other than Bezos in the top 10 slots on the Billionaires Index – Microsoft co-founder Steve Ballmer – is now richer than he was at the end of 2019.

Bezos is the richest person on Earth, Business Insider reported. Most his fortune stems from his stake in online retailer Amazon, which he founded in his garage in 1994. While other retailers are struggling to make ends meet and are laying off employees because of the coronavirus outbreak, Amazon has seen a surge in demand and is recruiting 100,000 new employees.

Bezos isn’t the only person that has profited during the outbreak. Zoom CEO Eric Yuan’s net worth has risen more than US$4 billion in 2020 as Americans embrace video conferencing for both work and socialising to comply with social distancing guidelines designed to help slow the spread of the novel coronavirus.

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This article originally appeared on Business Insider.