[Deep Dive] KOSPI's Continuous Rally: The Light and Shadow of AI Semiconductor Concentration

Breaking All-Time Highs: KOSPI Enters the 9,000 Era

The KOSPI index is rewriting history with its continuous rally. After breaking through the 9,000 mark for the first time in history on June 18, it is maintaining a strong bull market, recently reaching near the 9,300 level intraday. Behind this unprecedented upward trend lies the massive influx of foreign net buying and global AI semiconductor tailwinds. In particular, the expansion of AI infrastructure investments by global hyperscalers and the surging demand for HBM (High Bandwidth Memory) are acting as the core drivers of the Korean stock market.

Concentration in Large-Cap AI Semiconductor Stocks

This continuous rally of KOSPI is being strictly driven by large-cap semiconductor stocks, led by Samsung Electronics and SK Hynix. However, there is a structural imbalance in this rally that requires careful observation. As market funds are extremely concentrated in semiconductor-related stocks, a bizarre market condition is unfolding where there are more declining stocks than advancing ones, despite the index hitting all-time highs. In stark contrast to KOSPI's dazzling sprint, the KOSDAQ index is still struggling around the 1,000 mark, leaving the market highly polarized.

Future Outlook and Risk Management Strategy

Major global investment banks evaluate that the earnings improvement trend in the AI and semiconductor sectors will remain valid for the time being, leaving open the possibility of KOSPI's further level-up. However, this so-called 'uncomfortable new high' rally, which relies heavily on a few specific sectors, inherently carries the risk of high volatility. Rather than being complacent with the superficial breaking of highs, investors should proactively prepare for the market's rapid volatility caused by the concentration in large-cap stocks while strictly managing portfolio risks.