Summary of Key Points
The South Korean government, in collaboration with Samsung and SK Hynix, has announced a semiconductor investment plan totaling over 4700 trillion Korean won (approximately $3.1 trillion), focusing on expanding production of server DRAM (temporary memory for computers/servers) and HBM (high-speed memory dedicated for AI). However, the stock prices of both companies fell on the day of the announcement, and the market response was lukewarm. The industry is concerned about whether this expansion will change the global storage landscape, the pressures faced by Chinese manufacturers, and the possibility of future overcapacity.
1. South Korea Invests Heavily in Storage Expansion, Aiming at the AI Boom
South Korea's investment plan is indeed a major undertaking: the government and companies are jointly building four semiconductor factories in the southwestern region (two for Samsung and two for SK Hynix), with a total investment of 4755 trillion Korean won. SK Hynix plans to invest 1100 trillion Korean won in expanding DRAM and NAND flash memory production, while Samsung is constructing new wafer factories in Gwangju and HBM factories in Incheon/Wonyang.
Why these two products? After the AI boom, demand for server DRAM (used in data centers) and HBM (for AI devices like ChatGPT and NVIDIA GPUs) has surged, and they generate high profits. For example, HBM is now an essential component for AI chips; without it, AI processing speeds cannot be improved. Therefore, the company that can produce more and better HBM will secure orders from major AI companies.
2. Why Is the Capital Market Unimpressed? The Expansion Cycle Is Too Long, with No Immediate Returns
On the day of the announcement, Samsung's and SK Hynix' stock prices fell by 4.86% and 1.68%, respectively, and they continued to fluctuate the following day. The reason is simple: expansion does not mean immediate profits.
Building a semiconductor factory takes at least 2-3 years, and mass production takes even longer. Samsung's new HBM factory will not start producing until the second half of next year, and the larger wafer factories will not begin operations until 2027. Investors are looking for short-term returns, and since they won't see any benefits for several years, their reaction is a decline in stock prices due to the high initial investment.
3. The Global Storage Capacity Race Has Begun: Who Will Reap the AI Benefits First?
The current global storage market landscape is as follows:
- DRAM: Samsung (38%), SK Hynix (29%), Micron (22%), and ChangXin (8%)
- NAND flash memory: Samsung (29%), SK Hynix (18%), Micron/Kioxia/Sandisk/Changjiang Storage (each around 13%)
Everyone is expanding production to capture the AI market:
- Micron plans capital expenditures of $27 billion in 2026 and over $10 billion per quarter in 2027.
- ChangXin is preparing for an IPO to raise funds for DRAM technology upgrades.
- The South Korean companies are specifically targeting high-profit margin products like server DRAM and HBM.
The company that expands faster and has better technology will secure more orders. In the HBM sector, SK Hynix currently holds 58% of the market share, with Samsung and Micron at 21% each; ChangXin has not yet started mass production. The South Korean companies' expansion in HBM will strengthen their leading positions.
4. Pressure on Chinese Storage Manufacturers: Need to Catch Up Technologically and Quickly
Although the main competitors for the South Korean companies are Micron, Chinese manufacturers like ChangXin and Changjiang Storage also face challenges:
- Server DRAM: Last year, ChangXin's main customers were in the consumer electronics sector (e.g., smartphones), but servers require more stable memory, and the technical barriers are higher. Entering the data center market will take time.
- HBM: This is a fast-paced field with a short lifecycle of only 5 years (compared to 10 years for other DRAM types), and technology is evolving rapidly. The South Korean and Micron companies have already moved from HBM3 to HBM4E, while ChangXin has not yet started mass production. To catch up, they need to accelerate their efforts.
More importantly, major AI companies (like NVIDIA) have established supply chains with the South Korean and Micron companies, making it difficult for Chinese manufacturers to enter the market.
5. Will There Be Overcapacity in the Future? Manufacturers Are Becoming More Aggressive Due to AI Demand
The storage industry experienced a period of oversupply a few years ago (e.g., memory prices plummeted in 2019), so manufacturers were cautious about expansion. However, with the current AI boom, they are now becoming more aggressive.
Will there be overcapacity? Analysts believe not in the short term, as new factories will not start producing until 2027-2028, and demand for DRAM is still high. In the long run, it depends on the sustainability of AI demand; if AI growth falls short of expectations or all manufacturers expand excessively, overcapacity could occur.
For example, Micron executives have stated that "AI is still in its early stages, and demand will remain strong," but some worry that if too many companies invest in HBM production, supply may exceed demand in a few years, leading to price declines.
Conclusion
South Korea's investment is a bet on the future of AI-driven storage, but immediate returns are unlikely, which is why the capital market is unimpressed. Global storage manufacturers are competing for the AI benefits, with South Korean companies aiming to consolidate their leadership. Chinese manufacturers need to accelerate their technological advancement. The biggest uncertainty is how long AI demand will sustain; if it declines, it could lead to overcapacity. The future outcome depends on market developments in the coming years.