With all the news on leveraged Bitcoin blowups being reported, let’s not forget leverage can blowup an Equity portfolio too. Forgotten in under a year.

The fast rise and even faster fall of a trader who bet big with borrowed money.

Before he lost it all—all $20 billion—Bill Hwang was the greatest trader you’d never heard of.

Starting in 2013, he parlayed more than $200 million left over from his shuttered hedge fund into a mind-boggling fortune by betting on stocks. Had he folded his hand in early March and cashed in, Hwang, 57, would have stood out among the world’s billionaires. There are richer men and women, of course, but their money is mostly tied up in businesses, real estate, complex investments, sports teams, and artwork. Hwang’s $20 billion net worth was almost as liquid as a government stimulus check. And then, in two short days, it was gone.

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