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 on Monday as investor appetite for tech shares drove gains.
South Korean stocks surged past the historic 8,000-point mark on the KOSPI index Friday, driven by a continued rally in large-cap tech shares tied to artificial intelligence.
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Seoul shares rebounded Monday after opening lower, tracking gains on Wall Street. The benchmark KOSPI rose 0.37 percent to 7,503.42 as of 9:15 a.m.
Seoul shares opened higher Wednesday, tracking overnight gains on Wall Street, though continued uncertainty in the Middle East remains a concern for investors.
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South Korean stocks rebounded nearly 6 percent on July 3 after a steep sell-off the previous day. Bargain buying in semiconductor shares drove the recovery.