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Stock Market News — June 30, 2026 — Evening Update — Last 12 Hours (Pacific Time)
S&P 500 and Nasdaq post best quarter since 2020 as semiconductor sector surges ~94% in H1 2026 on AI infrastructure demand. South Korea's exports hit 50-year high, validating structural chip demand, while Microsoft layoffs and Nike's turnaround struggles inject caution into the rally.
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