Summary of Key Points
On July 31st, the stock prices of Samsung Electronics and SK Hynix surged by more than 20% (with SK Hynix even hitting a daily limit up), driving the Korean stock market to record its largest one-day gain. However, this was not a trend reversal but rather a technical recovery following a significant drop, coupled with temporary improvement in liquidity. The factors behind this include a surge in sales expectations for HBM4 (high-bandwidth memory dedicated for AI applications), the SK Group chairman's purchase of additional shares of his own company, and the strong demand for AI cloud services. In the long term, HBM4 is expected to enter a period of explosive growth. The localization of semiconductors is a major trend, but whether the bottom has truly been reached still depends on the price cycle of memory chips and the investment decisions of global technology giants.
Detailed Analysis
1. Why Did Stock Prices Rise by More than 20% in One Day?
The sudden rise in stock prices was not accidental; it was the result of several positive factors coming together:
- Outstanding Performance Expectations: Samsung stated that HBM4 sales in the third quarter would more than double compared to the second quarter, with HBM4 accounting for 60% of total HBM sales in the second half of the year—this signals a significant expansion of their AI business.
- Direct Support from the Chairman: Choi Tae-won, the chairman of the SK Group, personally purchased 3,620 shares of SK Hynix, providing investors with confidence by demonstrating his commitment to the company's success.
- Demand for Recovery after a Sharp Drop: The stock prices of both companies had fallen by 17% in the previous three days, creating a natural momentum for a rebound.
- Alleviation of Concerns about the AI Bubble: Financial reports from Microsoft and Amazon the following day showed that demand for AI cloud services remained strong, dispelling fears of a cooling down in the AI industry.
- Short-Sellers Covering Their Positions: Those who had bet against these companies quickly closed their positions (buying back shares), further driving up prices.
2. Why Do Experts Say the Bottom Has Not Been Reached?
Many believe the market has hit bottom, but experts argue otherwise for several reasons:
- This Rebound is Temporary: The fundamental conditions of the companies have not suddenly improved; rather, it is a recovery from a significant decline, and many investors who had taken on high leverage have largely liquidated their positions, easing liquidity pressures.
- Future Trends Depend on Two Key Factors: First, whether global technology giants (such as Google and Meta) will increase their investment in memory chips (without their support, demand will not grow). Second, whether memory chip prices have truly bottomed out and started to rise (memory chip prices are cyclical, and it is still uncertain whether the lowest point has been reached).
- Large Gap in Market Value: Even after the rebound, the market values of Samsung and SK Hynix are still 40% and 54% lower than their June peaks, indicating that the previous decline was quite substantial, and the current recovery only covers a small portion of the lost ground.
3. What is HBM4, and Why Does It Drive Stock Prices Up?
HBM4 is often referred to as the "gold standard" in memory for the AI era. In simple terms:
- Advanced Performance: While regular memory serves as a "local road," AI chips require rapid data transfer, which can be bottlenecked by conventional systems. HBM4 provides a "high-speed, multi-lane highway," enabling efficient data flow and is essential for AI servers.
- Entering a Period of Explosive Growth: Both Samsung and SK Hynix are expanding their production capacity for HBM4. Samsung expects HBM4 to account for over 60% of total sales in the second half of the year, marking a shift from trial production to mass market deployment.
- Strong Long-Term Demand: Third-party analysts predict that AI will continue to be a major driver of memory demand by 2027, with HBM4 potentially taking up a significant portion of DRAM production capacity, leading to increased prices and becoming a lucrative source of revenue for these companies.
4. Samsung's Expansion in the U.S.: More Than Just Capacity Growth
Samsung is building two new wafer fabrication facilities in the U.S. (one will start operating this year, and the other in 2030). The rationale behind this includes:
- Catching the AI Trend: The surge in AI chip demand requires additional production capacity, and the U.S., being home to major AI companies like NVIDIA and Microsoft, provides a strategic location for faster supply.
- Geopolitical Considerations: The U.S. aims to localize semiconductor manufacturing to reduce its dependence on Asia. By setting up factories there, Samsung can benefit from local incentives (such as tax benefits) and avoid potential trade restrictions.
- Competing with SK Hynix: With SK Hynix leading in the HBM market, Samsung's expansion is also a strategic move to compete for market share in AI memory.
5. Tips for Ordinary Investors:
If you are interested in these companies, don't rush to buy their shares. Wait for two clear signals before making a decision:
- Stable Memory Chip Prices: If prices begin to stabilize and rise, it may indicate that the industry cycle has bottomed out.
- Increased Capital Expenditure by Tech Giants: Whether companies like Google and Amazon announce increased purchases of memory chips will determine whether demand can truly pick up.
- Long-Term Trends: The expansion of HBM4 and the localization of semiconductors are long-term trends that could benefit related companies. However, short-term fluctuations are expected, so avoid buying at peak prices.
In summary, this recent rebound is more a recovery from a significant drop than a true trend reversal. The long-term opportunities in AI memory, particularly with HBM4, are worth watching. As experts point out, the entry of HBM4 into a period of explosive growth and the localization of semiconductors represent irreversible trends that will have a lasting impact on the industry.