Why Are Korean Stocks Falling Even Though Company Sales Keep Rising?
Samsung Electronics & SK Hynix: Understanding the Gap Between Business Performance and Stock Prices
If you're new to the Korean stock market, one question probably seems confusing:
"Why are Korean semiconductor stocks falling when their businesses are actually improving?"
At first glance, it doesn't make sense.
Samsung Electronics and SK Hynix have both reported strong improvements in revenue and profitability thanks to the AI boom. Yet their share prices have recently dropped sharply.
The answer lies in one important fact:
The stock market doesn't price today's earnings—it prices expectations for the future.
Let's break down what's really happening.
The AI Boom Has Been Real
The AI revolution has dramatically increased demand for advanced memory chips.
Large AI models from companies such as Microsoft, OpenAI, Meta, Amazon, and Google require enormous amounts of HBM (High Bandwidth Memory).
Only a few companies can manufacture these chips at scale.
SK Hynix
Samsung Electronics
Micron
Among them, SK Hynix currently leads the HBM market.
SK Hynix's Business Has Improved Dramatically
The financial recovery has been remarkable.
Revenue Growth
| Year | Revenue |
|---|---|
| 2023 | approximately KRW 32.8 trillion |
| 2024 | approximately KRW 66 trillion |
Revenue nearly doubled in one year.
Operating Profit
2023:
Operating loss
2024:
Operating profit exceeding KRW 23 trillion
This represents one of the fastest earnings recoveries in the global semiconductor industry.
HBM products now generate significantly higher profit margins than conventional DRAM, making AI memory the company's primary growth engine.
Samsung Electronics Is Also Recovering
Samsung's semiconductor division experienced a difficult period during the memory downturn.
However, conditions have improved significantly.
Estimated Company Revenue
| Year | Revenue |
|---|---|
| 2023 | approximately KRW 258 trillion |
| 2024 | approximately KRW 300 trillion (estimated) |
Its Device Solutions (Semiconductor) division has also returned to profitability after suffering losses during the memory cycle.
Although Samsung trails SK Hynix in HBM market share, it remains one of the world's largest semiconductor manufacturers with enormous long-term production capacity.
So Why Are Stocks Falling?
Because investors are now asking a different question.
Not:
"How good are today's earnings?"
Instead:
"Can these earnings continue next year?"
That's a completely different question.
Concern #1: AI Investment May Slow
Major technology companies are spending hundreds of billions of dollars building AI data centers.
Examples include:
Microsoft
Amazon
Meta
Alphabet
Recently, investors became concerned that some AI infrastructure projects could be delayed because of:
electricity shortages
power grid limitations
construction delays
higher operating costs
Notice the difference.
This is not the same as AI demand disappearing.
It's simply concern that growth may become slower than previously expected.
Concern #2: China's CXMT
China's memory manufacturer CXMT is expanding production capacity.
Many headlines suggest this could flood the DRAM market.
However, the reality is more nuanced.
CXMT mainly produces:
DDR4
DDR5
mainstream commodity DRAM
It does not currently compete at scale in cutting-edge HBM used for AI accelerators.
Because of export restrictions and technology limitations, Samsung, SK Hynix, and Micron remain far ahead in advanced HBM manufacturing.
Therefore:
CXMT is a long-term competitive risk rather than an immediate threat to AI memory leadership.
Concern #3: Higher Interest Rates
Higher interest rates reduce stock valuations.
Technology companies are especially sensitive because investors value future cash flows more heavily.
Even if earnings remain strong, higher interest rates can push stock prices lower.
Concern #4: Profit Taking
Before the recent correction:
SK Hynix had risen several hundred percent from its cycle low.
AI-related stocks had significantly outperformed the broader Korean market.
Many institutional investors simply locked in profits after an exceptional rally.
This doesn't necessarily mean they believe the business has deteriorated.
Foreign Investors Matter More Than Many People Think
Foreign investors own a significant portion of Korea's largest companies.
When global funds reduce exposure to semiconductors, Samsung and SK Hynix often fall together.
Conversely, when foreign investors return, recoveries can happen surprisingly quickly.
Watching foreign capital flows is often just as important as watching earnings reports.
Is the AI Cycle Over?
Based on currently available information:
Probably not.
The evidence suggests something different.
Major hyperscalers continue to invest aggressively.
Microsoft, Amazon, Meta, Alphabet, and Oracle have all maintained very large AI infrastructure spending plans.
Demand for HBM remains strong.
No major company has announced that AI expansion has been canceled.
Instead, investors are debating the pace of future growth, not whether AI itself will disappear.
Five Signals Investors Should Watch
Rather than focusing on daily price swings, these indicators are more important:
1. AI Infrastructure Spending
Do Microsoft, Amazon, Meta, and Alphabet continue increasing AI capital expenditures?
2. HBM Demand
Does demand for high-bandwidth memory remain strong?
This is currently the single most important earnings driver for SK Hynix.
3. Foreign Investor Buying
Do foreign investors begin buying Samsung Electronics and SK Hynix again?
Sustained foreign inflows often precede meaningful recoveries.
4. Earnings Guidance
Do semiconductor companies continue raising profit expectations?
Future guidance often matters more than current earnings.
5. U.S. Interest Rates
Lower inflation and expectations for future Federal Reserve rate cuts generally improve sentiment toward technology stocks worldwide.
Final Thoughts
The recent decline in Korean semiconductor stocks does not necessarily indicate that the underlying businesses are weakening.
In fact:
Sales continue to improve.
AI demand remains strong.
HBM profitability is still expanding.
Major global technology companies continue investing heavily.
What has changed is investor expectations.
Markets constantly price the future, not the present.
The key question isn't whether Samsung Electronics and SK Hynix had a strong quarter.
The real question is whether they can continue delivering exceptional growth over the next several years.
For long-term investors, separating short-term market sentiment from long-term business fundamentals is often one of the most valuable investing skills.
Disclaimer: This article is for educational and informational purposes only and should not be considered investment advice. All investment decisions involve risk, and readers should conduct their own research before making financial decisions.
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