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Glonhui June 30｜Dow Jones Index futures fell 0.11%, S&P 500 Index futures dropped 0.07%, and Nasdaq 100 Index futures decreased 0.05%.

Glonghui, June 30｜Before the market opened, U.S. solar technology stocks and related companies generally rose, with Enphase Energy up 12%, SolarEdge Technologies up 11%, Sunrun up 3.5%, Fluence Energy up 6.3%, First Solar up 3.3%, Array Technologies up 5.2%, and NextPower up 4.8%.

According to Odaily, market data shows that the weighting of the chip sector in the S&P 500 Index has risen to a record 19.7%, nearly four times higher than in 2020, mainly driven by the artificial intelligence (AI) investment boom. As the demand for AI infrastructure and computing power continues to grow, chip stocks have become one of the main drivers behind the recent rally in US equities, further concentrating the overall structure of the S&P 500 toward a small number of leading technology and chip companies. At the same time, this concentration has also intensified concerns about excessive index concentration and overvaluation. Nevertheless, ongoing ETF capital inflows continue to support the sector's performance. Market participants are closely watching whether AI capital expenditure can be sustained to justify the current valuation levels of semiconductors.