Asian shares tumbled on Tuesday, with benchmarks in Tokyo and Seoul sinking more than 3%, after Nvidia and other artificial-intelligence -related shares pulled U.S. stocks lower.

But as the chip maker seeks to parlay its semiconductor dominance into control of the full stack, vendor lock-in is a major risk, says one analyst.

Extends Vision-RF sensing technology into soldier- and vehicle-level fire-control that performs day or night, in all weather, ...