Deep Tide TechFlow news, June 30 – The weight of the chip sector in the S&P 500 index has risen to a record 19.7%, nearly quadrupling from 2020 levels, driven primarily by the artificial intelligence (AI) investment boom. As AI infrastructure and computing power demand continue to expand, chip stocks have become one of the core drivers of the current U.S. stock market rally, further concentrating the overall structure of the S&P 500 toward a handful of tech and chip leaders, while also exacerbating concerns over excessive index concentration and overvaluation. Nonetheless, continued inflows into related ETFs are still supporting sector performance. Market participants are closely watching whether AI capital expenditure can sustain its momentum to support current semiconductor valuation levels.