Wall Street ends lower; fears of AI bubble and inflation send investors away

Company Performance - Broadcom shares fell 11.4% after the company warned of slimmer future margins, raising concerns about the profitability of AI investments [1][11] - Oracle's stock dropped 4.5% following a nearly 11% decline the previous day due to a weak financial forecast, despite denying reports of delays in data centers for OpenAI [1][11] - Nvidia, a major player in AI chips, saw a decline of 3.3%, contributing to the overall negative sentiment in the semiconductor sector [8][11] - SanDisk experienced a significant drop of 14.7%, marking it as the largest percentage decliner in the S&P 500 [8][11] - CoreWeave and Oklo also faced declines of 10.1% and 15.1%, respectively, as investors moved away from AI infrastructure companies [8][11] Market Trends - The S&P 500 and Nasdaq Composite both closed down more than 1%, with the S&P 500 losing 73.59 points (1.07%) and the Nasdaq dropping 398.69 points (1.69%) [4][11] - For the week, the S&P 500 fell 0.63% while the Nasdaq declined 1.62% [5][11] - The Dow Jones Industrial Average decreased by 245.96 points (0.51%) but managed a weekly gain of 1.05% [7][11] - Six of the 11 S&P 500 sectors closed lower, with technology stocks leading the decline at 2.9%, marking their deepest daily loss since October 10 [9][11] Investor Sentiment - Investors are shifting focus to more defensive sectors amid concerns over the AI theme and upcoming labor market and inflation data [2][3][11] - The market is exhibiting caution ahead of significant economic reports, including nonfarm payrolls and consumer inflation data, which may provide insights into economic health [3][11] - Declining issues outnumbered advancers on both the NYSE and Nasdaq, indicating a bearish sentiment among investors [10][11]