Micron topped a $1 trillion market value for the first time on Tuesday as shares surged 19% on AI-driven demand for memory chips. The milestone highlights how explosive AI growth is lifting a new group of chipmakers beyond Nvidia's early dominance.

Micron is among a fresh crop of chipmakers benefiting from the next stage of the AI race.
Explosive demand for AI has led to a global memory shortage that chipmakers like Micron are struggling to fill.
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