SK海力士年内飙涨近240%，韩国交易所罕见发出投资谨慎提示！或许暗示该股可能过热，股价跌5.3%创三周最大跌幅

Core Points - The Korea Exchange issued an "investment caution notice" for SK Hynix due to a significant stock price surge, which lasted for one day [2] - SK Hynix's stock dropped by 5.3% on Tuesday, marking the largest decline in three weeks [2] - The stock had previously surged nearly 11% on Monday, with a cumulative increase of approximately 70% for the quarter, outpacing the KOSPI index by more than three times [2] Group 1 - The investment caution notice is a rare alert for large-cap stocks, previously issued for Doosan Co. and Hanwha Ocean Co. [2] - This notice is triggered by sudden or unexplained large fluctuations in stock price or trading volume, serving as a warning for investors to act cautiously [2] - If a stock is under the investment caution notice, it indicates compliance with one of eight criteria, such as a 100% price increase within three trading days [2] Group 2 - If a stock experiences a 40% increase over two trading days, trading will be suspended for one day [2] - The investment caution notice serves as a pre-warning before a higher-level alert is triggered, which would restrict margin trading [2]