In the six months between when the coronavirus shutdowns began on March 18 and September 15, American billionaires have become 29% richer than they were before the pandemic crippled the American economy in March, according to research from think-tank the Institute for Policy Studies (IPS).
Mark Zuckerberg's fortune grew by $49.9 billion (an increase of 83.9%) between March and September, while Jeff Bezos profited so much that in August he briefly became the first person in history with a personal net worth over $200 billion, per IPS.
Jared Bernstein during a virtual press conference on New York State's wealth tax debate September 10, "one is the stock market, and one is hunger.".
Many of the largest net worth gains by billionaires are closely tied to their company's performance on the stock market, which has hit record highs despite the turmoil in the rest of the economy since an initial drop in February.