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The Bank of Korea has called for strengthened monitoring of overseas derivatives linked to South Korean chip manufacturers, pointing out that their rapid growth may amplify domestic market volatility. The Bank of Korea stated in its semi annual monetary policy report that the concentration of semiconductor stocks, the rebalancing of foreign investors' investment portfolios, and the accumulation and release of domestic leverage were the reasons for the fluctuations in the KOSPI index from January to July. Global banks and ETF managers trade Korean spot stocks, futures, and options when hedging total return swaps, amplifying domestic stock price volatility. An abnormal transaction by SK Hynix in July triggered a nearly $60 million sell-off in the offshore digital currency market, reflecting the increased cross market risk brought by leveraged products linked to South Korean chip manufacturers.