How big a deal is China's reported breakthrough on a key chipmaking tool?

    China’s reported chip breakthrough comes with some big caveats

    ASML‘s stock fell Tuesday after a report that China is mass-producing a critical tool that the Dutch tech giant has long held a monopoly over. The decline came amid a steep sell-off in global semiconductor stocks as investors continued to grapple with uncertainty about the sector. ASML was last trading down 1.8%, but the stock…

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