Chipmakers are caught in the US-China crossfire

It’s not just a brewing trade war that’s making investors anxious

The US and China are the two most important markets for computer chips

Welcome to the silicon militarised zone.

For years, it has been the best of times for computer-chip companies. Now, though, they’re increasingly trapped in global political wars.

The latest example is the decision by a court in China temporarily to ban some sales there by Micron Technology, the Idaho-based maker of memory chips essential to most smartphones. The court case centers on specialised technology that a rival company says Micron stole, although the ...