Datatrek Research co-founder Nick Colas:

SOUNDBITE: DATATREK RESEARCH CO-FOUNDER NICK COLAS (ENGLISH) SAYING:

"It is an excuse for a pullback. We've had a very strong rally, obviously, in November. And I think the Administration feels to some degree they're playing with house money. We've had a great year in the stock market. S&P's up over 25%. And so if you lose a percent or two because of some renegotiation or negotiating posture, that's OK."

Trade-sensitive stocks tumbled on Trump's comments. Among them: Nvidia, Advanced Micro Devices, Apple, and Boeing.

PG&E shares jumped even though California regulators concluded in a probe that the bankrupty utility had failed to inspect transmission lines before a faulty wire sparked the deadliest wildfire in the state's history.

Audentes Therapeutics shares more than doubled. Japan's Astellas Pharma is buying the drugmaker for about $3 billion.