(This is CNBC Pro's live coverage of Monday's Wall Street chatter as global markets sell off. — Lisa Kailai Han 7:02 a.m.: How long sell-offs typically last Bad news: The current market sell-off may have further to go. — Lisa Kailai Han 6:09 a.m.: Oppenheimer's Stoltzfus: Best to not 'jump to conclusions' Investors need to have a cool head as global markets sell off, according to Oppenheimer's John Stoltzfus. — Fred Imbert 5:51 a.m.: Global markets in an 'aggressive risk-unwind', Vital Knowledge says Fears of a U.S. recession are pressuring global markets, leading investors around the world to sell some of this year's top winners, according to Adam Crisafulli of Vital Knowledge. "Markets are caught in an aggressive risk-unwind as equities plunge around the world, with tech getting hit particularly hard," he wrote in a note Monday.

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