Exchange-traded funds (ETFs) focused on memory chip concepts experienced a collective downturn. At the time of writing, the CSOP Samsung Futures Daily (2x) Leveraged Product (HKG: 07747) fell 8.43% to HK$218.50, while the CSOP Hynix Futures Daily (2x) Leveraged Product (HKG: 07709) dropped 8.62% to HK$133.65.

This movement follows market reports on June 4th indicating the South Korean Finance Minister expressed concern over the rise in leveraged equity investments and pledged to take measures to counter "herd behavior" in financial markets. The minister identified foreign investors adjusting their portfolios as a contributing factor to stock market volatility in South Korea.

Previously, the South Korean Ministry of Finance issued a statement noting that excessive volatility in the foreign exchange market, surpassing the nation's economic fundamentals, was primarily driven by foreign investors selling Korean stocks and an increase in speculative overseas trading.

By June 4th, South Korea's KOSPI Composite Index had declined over 2% during the session, with shares of Samsung Electronics Co., Ltd. and SK Hynix Inc. both retreating. While market consensus suggests the KOSPI still retains momentum to challenge the 9,000-point level in the near term, factors such as international oil price trends, exchange rate fluctuations, and overheated short-term sentiment are expected to contribute to increased intraday volatility.