CoreWeave is trading at $69.85 (down 4.2%) as investors react to concerns over its extensive capital spending plans and long-term profitability amidst a broader AI and semiconductor-led market downturn. - The company's massive capital expenditure plans for 2026, which are more than double those of 2025, are fueling worries about negative free cash flow and a challenging path to durable profits. - Market sentiment is also impacted by a broader sell-off in AI and semiconductor stocks, driven by valuation concerns and potential overbuild in the sector. - Additionally, reports of major customer Meta Platforms potentially building its own AI cloud business are adding to competitive and profitability pressures.