[Analysis: Semiconductor Sector's Market Cap Share in S&P 500 Rises to a Record 18.8%] According to a report by Jinse Finance, market analysis firm The Kobeissi Letter has released the latest data showing that the weight of the semiconductor sector in the U.S. stock market continues to rise, now accounting for approximately 18.8% of the total market capitalization of the S&P 500, a record high. This figure has more than tripled since 2022, with the semiconductor index SOX surging approximately 546% over the same period, highlighting the sector's significant leadership position in the current tech cycle. From a historical perspective, the current weight of semiconductors in the S&P 500 has surpassed more than half of the peak level during the 2000 internet bubble, with a structurally significant increase. The U.S. equity market is increasingly concentrated on the AI and semiconductor supply chain, and the influence of tech stocks on the overall index has reached historically extreme levels.