US stocks fall as AI favorites drag markets lower amid valuation concerns

US equities declined on Thursday, with major indexes falling as AI-linked stocks, including Nvidia and AMD, faced renewed selling pressure amid investor concerns over lofty valuations. This downturn was exacerbated by alarming labor market data, which showed October job cuts reaching a 22-year high of 153,000, signaling broader economic strain. Despite the overall market weakness, Datadog and Snap notably surged on strong earnings and strategic announcements, while Brighthouse Financial and Golden Entertainment rose on acquisition news.

Analysis

US equities experienced a broad decline on Thursday, with the Nasdaq Composite sliding 1.39% and the S&P 500 dropping 0.1%, primarily driven by renewed selling pressure on AI-linked stocks. Heavyweights like Nvidia, Microsoft, and AMD led the downturn, reflecting investor reassessment of their lofty valuations and pushing the Nasdaq 100 towards its worst week since early April. Qualcomm also slipped 3% despite strong earnings, overshadowed by potential future business loss with Apple.

Further dampening sentiment was concerning labor market data, with October job cuts reaching over 153,000, a 22-year high for the month and a 175% increase year-over-year. This significant rise in layoffs, nearly triple September's figure, signals growing economic strain and adds caution to markets already wary of slowing growth. The ongoing government shutdown, which has stretched beyond one month, further clouds the economic outlook.

Despite the broader market sell-off, several individual stocks demonstrated resilience or significant moves based on company-specific news. Datadog surged 25% on strong Q3 profit and revenue beats, alongside an upgraded full-year outlook, while Snap climbed 10% following a $500 million stock buyback and a strategic partnership with Perplexity AI. Conversely, Marriott Vacations Worldwide and Duolingo plunged 25% each due to cut full-year earnings guidance and missed Q4 bookings forecasts, respectively. M&A activity also drove gains, with Brighthouse Financial jumping 26% and Golden Entertainment soaring 36% on acquisition news.

Key Decisions for Investors

• Investors should re-evaluate exposure to high-valuation AI stocks, considering the recent selling pressure and the broader market's shift in sentiment.
• Monitor upcoming labor market data closely for further signs of economic deceleration, as October's job cuts suggest increasing strain and potential recessionary pressures.
• Seek opportunities in companies demonstrating strong fundamentals and positive guidance, or those involved in M&A, as these can outperform during broader market pullbacks and offer idiosyncratic alpha.