WSJ Editor-in-Chief Emma Tucker interviews American billionaire and Citadel CEO Ken Griffin from WSJ Invest Live in West Palm Beach, Florida. Photo: Krisztian Bocsi/Bloomberg News The Wall Street ...

Hours before President Donald Trump's highly anticipated speech at the World Economic Forum, Ken Griffin, the outspoken billionaire CEO of Citadel, gave his rundown of the US leader's key economic ...

Hedge fund tycoon Ken Griffin has a blunt message for anyone expecting artificial intelligence to instantly rewrite the global economy: the hype is real — and it's there to justify enormous spending.

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