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Fortune
Fortune
Jason Ma

'Black Swan' investor warns the 'greatest bubble in human history' is about to pop and stocks could lose more than half their value

Mark Spitznagel speaks at podium (Credit: Misha Friedman—Bloomberg via Getty Images)

Mark Spitznagel, cofounder and chief investment officer of the hedge fund Universa Investments, has frequently sounded the alarm about bubbles popping and other extreme market events.

In an interview with the Wall Street Journal, the long-time associate of The Black Swan author Nassim Nicholas Taleb said a severe crash is on the way and stocks could lose more than half their value, while acknowledging that his latest warning should come as no surprise.

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