Semiconclusterf***ed

Growth at an unreasonable price

Shares in NVIDIA, a computer chip maker, have boomed. They're up 170% this year and have crushed almost every other stock. Investors think artificial intelligence (AI) will change the world and want a slice. They reckon NVIDIA will make the hardware that powers AI, and they've bid hand-over-fist to get in. However, some punters wonder whether the rally …