And it's completely legal.
After President Trump tweeted Amazon was hurting retailers, its market value lost billions of dollars. He's butted heads with the company before.
Amazon filed for a trademark to make meal kits, and Blue Apron stock fell to an all-time low.
President Trump says he's looking into a revived Glass-Steagall Act, something both he and Sen. Bernie Sanders campaigned on.
Federal Reserve Governor Daniel Tarullo is stepping down a few years early.
The Dow climbed about 100 points at one point as investors around the world waited for the 45th president of the United States to be sworn in.
A Trump spokesman says the president-elect sold all of his stock in June.
Snapchat reportedly wants to raise $4 billion during its initial public offering.
Stocks sank Wednesday after the Federal Reserve gave a cautious assessment of the global economy.
U.S. stocks fell Monday as the price of oil slumped again, giving up some of the ground it gained late last week.
The Dow dropped about 440 points, the S&P 500 about 50 points and the Nasdaq roughly 150 points in early morning trading on Monday.