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Happy Wednesday. Or maybe not, if you held U.S. assets amid yesterday’s sell-off.

S&P 500 futures are little changed this morning. The three major indexes are coming off their worst day in months.

Here are five key things investors need to know to start the trading day:

President Donald Trump’s threat of new tariffs on European nations who oppose American ownership of Greenland sent U.S. stocks plunging yesterday. The three major averages notched their worst days since October, with yesterday’s slides pulling the S&P 500