A broad selloff in semiconductor stocks dragged U.S. indexes lower Tuesday, with the Nasdaq leading declines after Samsung's record-breaking profit report failed to soothe investor worries about the AI trade. The Dow turned negative as chipmakers tumbled, while oil prices rose amid fresh tensions in the Strait of Hormuz.

At the heart of the rout is a growing disconnect between chip companies' strong fundamentals and sky-high valuations. Samsung posted record profits, yet investors demanded more from the AI narrative, according to Bloomberg. The selloff echoes last week's DeepSeek-driven volatility, underscoring how quickly sentiment can shift in the sector.

The S&P 500 dipped as AI worries hit chipmakers, with the Philadelphia Semiconductor Index sliding sharply. Despite Samsung's robust quarter, traders focused on margin pressures and the sustainability of AI-related demand. Meanwhile, oil's rise added inflation concerns, complicating the outlook for rate-sensitive tech stocks.

SpaceX was a bright spot, drawing bullish calls from analysts anticipating 47% upside as it heads for the Nasdaq 100, per Bloomberg. However, Motley Fool noted the company is losing money and borrowing billions, questioning its valuation. The divergence between SpaceX's buzz and its financials highlights the froth in high-growth names.

Morgan Stanley valued SpaceX's space business at $8 per share, while Barron's reported 14 new buy ratings but one hold. The stock dropped despite the flood of optimism, suggesting even crowded trades face limits in a skittish market.