Amid a joint decline in the KOSPI and KOSDAQ, selling pressure focused on Daehan Optical Communication, which had been showing wide volatility driven by expectations surrounding the optical communication and AI data center theme. Following a short-term surge, profit-taking movements spread, causing trading volume to spike sharply.

Double-Digit Decline for Two Consecutive Days

According to the Korea Exchange on the 29th, KOSDAQ-listed Daehan Optical Communication closed at 7,450 won, down 1,000 won (11.83%) from the previous trading day. The day before, it had ended at 8,450 won, down 13.24%.

Compared to the closing price of 9,740 won on the 27th, the stock price has fallen 23.51% in just two days.

Trading Volume More Than Doubles

Trading volume surged from 4,756,672 shares the previous day to 10,065,934 shares on this day, more than doubling. This is interpreted as an influx of new buying at lowered price levels alongside an expansion of sell orders. However, it is difficult to conclude a rebound based solely on the volume increase.

Stock Price Movement Over the Past Week

• 21st: 9,860 won
• 22nd: 10,090 won
• 23rd: 10,840 won
• 24th: 9,920 won
• 27th–29th: Three consecutive days of weakness, declining to the 7,000-won range

High volatility is evident, with repeated surges and corrections.

Background: Optical Communication Industry and AI Data Center Theme

The optical communication industry, to which Daehan Optical Communication belongs, is directly tied to the expansion of AI data centers, cloud infrastructure investment, the construction of 5G and 6G networks, and growing demand for ultra-high-speed optical cables. As data transmission volumes increase and the importance of large-capacity optical fibers and cables grows, related companies have been categorized under the AI data center theme.

Risk Factors

There can be a discrepancy between expectations for industry growth and the timing of individual companies' earnings reflections. Stocks into which short-term funds flow rapidly around a theme carry the risk of steeper declines if market investment sentiment weakens, as profit-taking and stop-loss sell orders may hit the market simultaneously.

[This article was written with the assistance of AI. This article is investment reference information based on publicly available market data and does not recommend the purchase or sale of any specific stock. Investment decisions and the resulting responsibilities lie solely with the investor.]