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JPMorgan tracks Trump bombshell tweets with 'Volfefe' index

Analysts find correlation between tweetstorms and volatility in Treasury yields

NEW YORK -- It's official: President Donald Trump's tweetstorms are causing a real storm in the market, per JPMorgan.

Analysts at the investment bank last week introduced the "Volfefe" index -- a name inspired by Trump's "covfefe" tweet from 2017 -- to track the president's "Twitter-delivered impact on markets."

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