US stocks open lower, extending selloff as tech stocks drag

US equities closed sharply lower, extending a volatile week, as a significant selloff in technology stocks, fueled by concerns over the sustainability of the artificial intelligence trade and stretched valuations, weighed on broader markets. Investor sentiment was further impacted by weakening expectations for a Federal Reserve rate cut in December, with probabilities for a quarter-point cut falling to 52%. Amidst the downturn, Cidara Therapeutics surged 105% following a $9.2 billion acquisition agreement with Merck, while StubHub plunged 25% after reporting a substantial net loss, and Walmart declined on news of a CEO transition.

Analysis

US equity markets experienced a significant downturn, with the Nasdaq Composite dropping 1.5% and the S&P 500 falling 1.1%, extending a volatile week. This broad market weakness was primarily driven by a sharp selloff in technology stocks, including Nvidia (-2.8%), AMD (-4.7%), Tesla (-3%), and Palantir (-3%), which dragged major indices. The Nasdaq is now poised to break its seven-week winning streak.

Investor anxiety intensified regarding the sustainability of the artificial intelligence trade, highlighted by Oracle's pullback and concerns over stretched tech valuations and rising AI capital expenditures. Concurrently, expectations for a Federal Reserve rate cut in December significantly weakened, with probabilities falling to 52% from 62.9% earlier in the week, as some Fed officials expressed concerns about persistent inflation. This combination contributed to deteriorating risk sentiment.

Amidst the broader market decline, specific corporate news drove divergent stock movements. Cidara Therapeutics surged 105% following a $9.2 billion acquisition agreement with Merck, while Avadel Pharmaceuticals rose 20% on a competing buyout offer. Conversely, StubHub plunged 25% after reporting a substantial $1.33 billion net loss and withholding future guidance, and Applied Materials slid 4% due to a cautious outlook despite beating Q4 estimates.

Key Decisions for Investors

• Re-evaluate current allocations to growth-oriented technology stocks, particularly those with high AI exposure, given concerns over stretched valuations and increased capital expenditures.
• Closely monitor Federal Reserve communications and economic data for further shifts in interest rate expectations, as reduced rate cut probabilities suggest a potentially tighter monetary environment.
• Consider defensive positioning or diversification into sectors less sensitive to interest rate fluctuations, while selectively assessing M&A-driven opportunities for potential value creation.
• Exercise heightened due diligence on companies reporting significant losses or withdrawing guidance, as these signals indicate elevated operational uncertainty and potential downside risk.