The Philadelphia Semiconductor Index (SOX) closed at 12399.38 points on Wednesday, just about 1.1% shy of the 12536.99 points needed to enter a bull market. This rally was primarily driven by strong earnings reports from companies such as CoreWeave, Super Micro Computer, and Lumentum, which indicated robust AI spending. Shares of these three companies surged approximately 19%, 19%, and 13% respectively in a single day. However, Dan Kemp, founder of investment advisory firm Portfolio Thinking, warned that order backlogs do not necessarily equate to realized revenue, and the sustainability of AI infrastructure investment remains questionable. He pointed out that CoreWeave raised its full-year capital expenditure plan, but its revenue guidance was "far more conservative," and net interest expenses significantly exceeded adjusted operating profit. Additionally, the US Consumer Price Index (CPI) data released on Wednesday, which largely met Wall Street's expectations, also contributed to the chip stock rally.