5月29日，KOSPI指数创下历史新高，其波动率指数也随之走高。基准指数收于8476.15点，上涨3.55%；VKOSPI指数上涨3.72%，报74.26点。
KOSPI 200波动率指数（VKOSPI）本月上涨了36%，与KOSPI指数走势同步。分析人士认为，这种联动主要是由于三星电子（Samsung Electronics）和SK海力士（SK hynix）的权重高度集中，以及杠杆ETF的资金流入所致。
三星电子和SK海力士合计约占KOSPI总市值的近一半，市值分别为1800万亿韩元和1600万亿韩元。现代汽车证券（Hyundai Motor Securities）的Kim Jae-seung表示，这两只股票权重的不断增加扩大了KOSPI的波动性。
韩国交易所（Korea Exchange）于本周早些时候推出了与三星电子和SK海力士挂钩的个股杠杆ETF。仅周二一天，就有近2万亿韩元资金流入这些产品，但当天上涨的股票仅有75只，而下跌的股票则多达826只。
三星证券（Samsung Securities）的Lim Eun-hye指出，杠杆产品的结构可能会放大收益和亏损。
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South Korean stocks opened at a fresh record high on Thursday, moving closer to the historic 8,000 milestone on the benchmark KOSPI index amid strength in large-cap tech shares.
The Kospi has crossed 8,000 for the first time under President Lee Jae Myung, driven by semiconductor gains and government reforms.
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South Korean stocks opened at a fresh record high above 7,900 points on Tuesday, propelled by gains in major chipmakers. The KOSPI rose to 7,953.41 at the opening bell, marking the first time the index has crossed the 7,900 level.
Seoul shares opened higher on Tuesday, propelled by Samsung Electronics' record first-quarter earnings. The benchmark KOSPI rose 2.47 percent to 5,584.76 in the first 15 minutes of trading. Strong demand for AI-related chips drove the profit surge.
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South Korean stocks rebounded to a fresh record high on May 29, fueled by gains in artificial intelligence shares and optimism over a potential U.S.-Iran ceasefire extension.
South Korean stocks pared early losses to close nearly unchanged on Friday amid the ongoing Middle East crisis stemming from the Iran conflict. The KOSPI index ended at 5,584.87, up 0.02 percent, while the won weakened against the U.S. dollar. Autos and defense shares led the gains.