Samsung Electro-Mechanics and Hanmi Semiconductor shares surge and plunge amid a sharp increase in ETF trading

2026Year 6 month 11 day trading saw sharp rises and falls in the share prices of some semiconductor equipment-related stocks. Samsung Electro-Mechanics and Hanmi Semiconductor were reported to have shown significant volatility. These fluctuations emerged in connection with ETF trading.

Financial authorities said they had determined on the same day that ETF trading turnover was excessive and would closely monitor leveraged ETFs with a multiple of 2times. The authorities explained that excessive trading could increase market volatility. The supervisory authorities said the designation as an issue under observation would take effect immediately.

Funds including large-cap stocks such as “Samsung Electronics and Life” drew attention during changes in the holdings of some index funds and the rebalancing of large-cap stocks. It was pointed out that changes in the holdings weights of related funds had amplified price fluctuations in certain stocks. Trading volume in individual stocks rose significantly above usual levels.

Semiconductor-related exports continue to show strength. According to reports, semiconductor exports totaled 111billion dollars over the ten-day period. Export performance was cited as one aspect of industry conditions.

Some in the market viewed the semiconductor correction phase as a buying opportunity. These views were presented on the basis of medium- to long-term demand through 2028. It was also reported that short-term volatility could continue.

Recently, amid increased selling of semiconductor- and AI-related stocks, a shift in interest toward the U.S. consumer goods, retail, and energy sectors was reported. Changes in investors’ sector-specific positions are altering short-term market trends. Trading trends in related ETFs and large-cap stocks continue to be monitored.