This is the most critical question facing U.S. investors right now — and it has nothing to do with Iran

Chip stocks have pulled back from a parabolic rally, and there are technical and historical reasons for investors to worry that a deeper selloff in the sector will hurt the broader stock market.

​Chip stocks have pulled back from a parabolic rally, and there are technical and historical reasons for investors to worry that a deeper selloff in the sector will hurt the broader stock market.