The stock market faced a challenging week, with the Nasdaq dropping 4.5%, marking its worst weekly performance since June, while the S&P 500 fell 2%. The decline was largely attributed to higher-than-expected inflation data, with September's consumer price index rising 3.7% year-over-year, surpassing the anticipated 3.6%.
This inflationary pressure raises concerns about prolonged elevated interest rates from the Federal Reserve, which could hinder the ongoing AI infrastructure investments. Notably, the semiconductor sector suffered as competition intensified, particularly after Chinese company CXMT announced advancements in chip technology, leading to a 10% drop in the VanEck Semiconductor ETF.
In contrast, the Dow Jones gained 0.7% as investors shifted towards sectors like healthcare and consumer staples. Despite the overall market downturn, some tech stocks like Meta Platforms and Microsoft showed resilience, with Meta's new AI models generating positive attention and Microsoft reaching a record high.
Bank earnings were robust, with Goldman Sachs reporting a 72% surge in equities trading revenue, yet investor sentiment remained cautious due to economic uncertainties. Overall, the week underscored the importance of diversification in investment strategies, as sectors outside of tech provided stability amidst the volatility