AI semiconductor stocks sold off Monday after prominent industry figures warned about risks from the rapid development of advanced artificial intelligence systems. Nvidia fell more than 3%, while AMD, Intel and Marvell dropped between 5% and 6%; the Philadelphia Semiconductor Index declined nearly 6% intraday. Gains in Adobe and ServiceNow suggested investors were reallocating within technology stocks rather than abandoning AI exposure altogether, although the move highlighted growing scrutiny of chip and infrastructure spending. Brent crude rose above $108 a barrel after attacks targeted Saudi Arabia's critical energy infrastructure and temporarily shut the East-West pipeline, which transports about 4 million barrels daily toward Red Sea export terminals. The supply disruption added to weeks of rising oil prices and heightened inflation concerns, reinforcing expectations of further Federal Reserve tightening. Bitcoin now faces a significant macroeconomic test as higher interest-rate expectations, equity volatility, energy-market disruption and weakness in technology stocks weigh on risk-oriented assets. Market participants are watching Federal Reserve communications and the broader market response for clues about the direction of digital-asset valuations.