Traders are bracing for Trump's social media posts as he returns to the White House

The Jawboner-in-Chief is back.

During his first term Donald TrumpThe incessant tweets were required reading for Wall Street types, whether they liked it or not. He screamed when the stock market rose and beat up the chairman of the Federal Reserve Jerome Powell When it went down (“Where did I find that guy Jerome?”), CEOs who angered him bullied him and threatened to impose tariffs and sanctions on countries around the world.