Stock market today: Dow, S&P 500, Nasdaq futures take a breath after tech selloff

Market Overview - US stock futures faced challenges on Wednesday after a significant decline in Wall Street equity markets, with the Dow Jones Industrial Average futures slightly above flat, S&P 500 futures down 0.1%, and Nasdaq 100 futures down 0.2% due to AMD's disappointing earnings despite beating estimates [1] - The Nasdaq Composite experienced a steep decline of over 2% during regular trading on Tuesday, primarily driven by a selloff in tech stocks, particularly Palantir, which fell nearly 8% despite exceeding third-quarter expectations [2] Investor Sentiment - Concerns are rising among investors regarding the sustainability of the AI-driven market rally, with some questioning whether the current valuations are justified, especially following AMD's underwhelming earnings report [3] - Investor Michael Burry's actions, including puts against Palantir and Nvidia, have intensified fears of a potential AI bubble [3] Company Updates - Novo Nordisk lowered its full-year profit and sales guidance amid intense competition in the weight-loss drug market, as the new CEO aims to regain lost ground [5] - US-listed shares of Novo Nordisk rose nearly 3% in premarket trading following the release of its quarterly earnings [6] Global Market Impact - Asian markets mirrored the US tech sell-off, with South Korea's Kospi dropping over 6% before recovering to a 3% decline, Japan's Nikkei 225 down 2.8%, and Hong Kong's Hang Seng index slipping 0.5% [7] - The global market sentiment is affected by fears of inflated AI valuations, leading to reduced investor appetite for high AI spending [7][8]