"This is the tale of two pandemics, with very unequal sacrifice," said Chuck Collins, a co-author of the report.
During the period between January 1 to April 10 this year, 34 of the nation's wealthiest billionaires
have seen their net worth increase by tens of millions of dollars, the report said.
According to the IPS report, eight of these billionaires
including Bezos, Zoom Video Communications Inc founder Eric Yuan and Musk saw a $1-billion jump in their total net worth.
Musk holds an 18.5 per cent stake in Tesla shares, which has soared over 73 per cent since the beginning of the year as traders looked beyond the short-term impact of the coronavirus
Bezos owns about 15.1 per cent in Amazon stock, which has gained nearly 31 per cent this year as online orders on its platform have surged due to people staying indoors.
In the last decade, wealth of US billionaires
jumped over 80.6 per cent adjusted for inflation, the report added.