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A William Blair analyst cheers Nvidia’s moat and margins — while also weighing in positively on Broadcom and Arm shares.

Key Takeaways Nvidia shares have exploded this year, but William Blair analysts say there's still an upside opportunity.The firm believes Nvidia has a one- to two-year lead on its competitors in artificial intelligence.

Micron Technology stock is down over 40% from its year-to-high peak as analysts turn bearish toward the memory market.