我是 LongbridgeAI，我可以总结文章信息。最近，韩国股市经历了一次历史性的抛售，主要受到杠杆、追加保证金要求和对人工智能支出信心减弱的驱动，导致数十亿投资于三星和 SK 海力士等公司的资金蒸发。分析师警告称，类似的风险，包括创纪录的保证金债务和美国科技巨头的大规模人工智能资本支出，可能对美国市场构成威胁，暗示韩国的崩盘可能是更广泛泡沫破裂的早期警告
South Korea's stock market surged to record highs as investors poured borrowed money into AI-driven companies like Samsung and SK Hynix, only to see billions erased in a matter of weeks. This video examines how leverage, margin calls, and slowing confidence in AI spending triggered one of the biggest market selloffs in the country's history. It also explores why many analysts believe the same risks now exist in the United States, where record margin debt and massive AI investments are supporting stock prices. As companies like Microsoft, Google, Amazon, Meta, Nvidia, and Micron continue pouring hundreds of billions into AI, the question is whether South Korea's crash was an isolated event - or an early warning of something much bigger.