Most KOSDAQ large-cap stocks by market capitalization are trading weak on May 29. Selling pressure has spread across major growth sectors including semiconductor equipment, secondary batteries, biotechnology, and robotics, suggesting a broad contraction in investor sentiment toward KOSDAQ large-cap stocks rather than sector-specific issues.

As of the morning session, nine out of the top 10 KOSDAQ stocks by market capitalization declined, with the exception of PharmResearch. In particular, Jusung Engineering and Wonik IPS posted declines of around 10%, while Ecopro BM, Ecopro, and ABL Bio also fell in the 6–7% range.

■ Semiconductor Equipment Stocks Post Largest Declines Semiconductor equipment stocks recorded relatively steep drops. Jusung Engineering traded at 115,200 won, down 10.56% from the previous session, a decline of 13,600 won, on a volume of 968,014 shares. Wonik IPS fell 9.72% to trade at 80,800 won, down 8,700 won from the prior session, with a trading volume of 799,726 shares. Rino Industrial also declined 6.01% to 57,900 won.

■ Secondary Battery Large-Cap Stocks Also Decline Together Ecopro BM dropped 7.07% to 94,600 won, while Ecopro traded down 6.46% at 68,000 won. Ecopro saw relatively active trading among large-cap stocks with a volume of 856,608 shares.

■ Biotech Stocks Show Varying Degrees of Decline Alteogen, the top KOSDAQ stock by market capitalization, traded at 281,000 won, down 5.23%. The decline amounted to 15,500 won on a volume of 283,770 shares. ABL Bio fell 7.27% to 63,800 won, and HLB declined 2.14% to 29,750 won. While selling pressure flowed into biotech large-caps broadly, the magnitude of declines varied by stock.

On the other hand, PharmResearch gained 3.73% to trade at 389,500 won, making it the only advancer among the top market-cap stocks. It rose 14,000 won from the previous session on a volume of 296,640 shares. This suggests that selective buying flowed into individual companies even as KOSDAQ large-caps broadly declined.

Rainbow Robotics, a major robotics stock, traded at 391,000 won, down 2.37%. While the decline was more limited compared to semiconductor equipment and secondary battery stocks, it still followed the broader weakness trend among KOSDAQ growth stocks.

■ Selling Pressure Across Growth Stocks Broadly Today's movement in KOSDAQ large-cap stocks is interpreted as a market environment where selling pressure is being applied across growth stocks broadly, rather than a decline confined to a specific sector. In particular, with semiconductor equipment and secondary battery stocks leading the declines, it is necessary to monitor whether profit-taking on recent gains and short-term supply-demand outflows are occurring.

Going forward, the KOSDAQ market trend is expected to be influenced by changes in supply and demand from foreign and institutional investors, the pace of semiconductor investment expansion, the recovery speed of secondary battery industry conditions, and clinical trial and technology licensing outcomes from biotech companies. Rather than approaching the market based solely on index levels or market capitalization rankings, investors should examine on a stock-by-stock basis whether increased trading volumes are translating into actual earnings improvements, new orders, or clinical results.

[This article is not intended to recommend the purchase or sale of any specific stock. Stock prices can fluctuate rapidly based on corporate performance, supply and demand, and market conditions, and investment decisions and responsibilities rest solely with the investor. Intraday stock prices and percentage changes included in the article may vary depending on the time of writing. This article was produced with AI assistance.]