Korea's Export Polarization Deepens Amid Semiconductor Boom

Export polarization in Korea is deepening. According to data from the Korean Statistical Information Service, the country's top five exporters, including Samsung Electronics and SK hynix, accounted for 43.5 percent of total exports in the first quarter of this year, which reached US$219.9 billion. That marked a sharp increase from 28.7 percent a year earlier.

Even more striking, 82.8 percent of the entire increase in exports during the quarter came from those five companies alone. Firms ranked between sixth and 100th accounted for only 9.6 percent of export growth. Exports by the top five companies surged 109.1 percent from a year earlier, while the top 100 companies overall posted growth of 52.8 percent. The figures reveal a classic K-shaped polarization driven by the semiconductor supercycle.

It is fortunate that Korea possesses semiconductors as such a powerful growth engine. The problem is excessive dependence on a single industry that is accelerating this divide. According to a report by the National Assembly Budget Office, semiconductors accounted for 35.9 percent of Korea's exports from January to April. Semiconductor exports in the first quarter jumped 139 percent from a year earlier, while exports excluding semiconductors rose only 11.6 percent.

That means business conditions in industries outside semiconductors are weakening. Yet the semiconductor boom is creating economic distortions that obscure this reality. The stock prices of Samsung Electronics and SK hynix, which together account for nearly half of the Kospi's market capitalization, continue to dominate the market.

The semiconductor rally that fueled stronger-than-expected first-quarter growth has also raised expectations for upward revisions to Korea's annual growth outlook. But beneath the surface, the foundations of the broader industrial economy are weakening. Traditional export sectors such as steel and petrochemicals are steadily losing competitiveness amid growing pressure from China and other rivals.

An economic structure overly dependent on semiconductors could become one of Korea's greatest vulnerabilities. The country cannot sustain itself indefinitely on semiconductor exports alone. What Korea needs now is the wisdom to use the time and profits generated by the current boom to strengthen other sectors before conditions change.