Markets in Asia, Europe, and the U.S. were all down sharply Tuesday after President Trump threatened additional tariffs on $200 billion worth of Chinese goods. Plus, a look at the year in IPOs and what new offerings are on the docket. And with AT&T's acquisition of Time Warner officially closed, there's room for one more in the Cheddar 50 index. We talk to Intel's Doug Davis about why that company's self-driving car ambitions got it on the list.