Analysis: Weight of chip stocks in S&P 500 rises to 19.7%, a record high, raising concentration concerns

According to Odaily Planet Daily, market data shows that the weight of the chip sector in the S&P 500 index has risen to a record 19.7%, nearly quadrupling from 2020 levels, primarily driven by the artificial intelligence (AI) investment boom. As demand for AI infrastructure and computing power continues to expand, chip stocks have become one of the core drivers of the current US stock market rally. Consequently, the overall composition of the S&P 500 has further concentrated towards a few leading tech and chip giants, while also intensifying market concerns about excessive index concentration and high valuations. Nevertheless, sustained capital inflows into related ETFs continue to support the sector's performance. Market participants are closely monitoring whether AI capital expenditures can be sustained to justify current semiconductor valuation levels.