On June 24, Eastern Time, the three major U.S. stock indexes diverged, with only the Dow posting gains, while memory and chip stocks extended yesterday's losses. The Dow Jones Industrial Average rose 0.36% to 51,850.31; the Nasdaq Composite fell 0.43% to 25,476.64; and the S&P 500 slid 0.10% to 7,358.33. Cerebras Systems (CBRS) tumbled 19.54% to $182.41 following its earnings release, which showed first-quarter core revenue (non-GAAP) grew 94% year-over-year to $193.4 million, beating analysts' average estimate of $181.2 million, but the company expects its second-quarter core gross margin to contract significantly to 36%-38% from 46.5% in the first quarter. Among mega-cap tech stocks, Microsoft (MSFT) fell 2.27%, Tesla (TSLA) slipped 1.59%, and Nvidia (NVDA) dipped 0.52%. The Philadelphia Semiconductor Index closed down 0.18% at 13,458.19 points, with Qualcomm (QCOM) falling 3.29%. Amazon’s Zoox introduced an updated robotaxi, entering the mass-production phase for U.S. commercial expansion this year.