July 24, 2026: The Korea Composite Stock Price Index (KOSPI) plunged sharply after the opening bell, with losses briefly exceeding 3.7% and hitting a low of 6,831 points. SK Hynix tumbled roughly 5% during the session, while Samsung Electronics dropped about 4%, making them the primary drag on the Korean market. As of publication, SK Hynix was trading at 1,844,000 KRW (approximately $1,330), down about 3.91%. This movement echoes previous sessions where intraday lows approached 1,790,000 KRW.
On the same day, Japan’s Nikkei 225 plummeted over 1,900 points, or 2.9%, breaking below the 65,000-point threshold. SoftBank Group fell 5.2%, Kioxia dropped 3.5%, and the semiconductor and tech sectors faced broad pressure. The collective sell-off across Asia-Pacific markets traces back to Wall Street’s previous session—where all three major US indices closed lower. The Nasdaq Composite sank 2.15%, the S&P 500 fell 1.21%, marking the largest single-day drop of the month.
SK Hynix’s decline is not an isolated event; it reflects the broader repricing of global risk assets in Asian markets. To understand this downturn, we need to examine three factors: the drivers behind the US market sell-off, the shared pressures facing the semiconductor industry, and unique local dynamics in Korea.
What Triggered the US Market Sell-Off?
On July 23, US stocks experienced their most intense sell-off in months. The Dow Jones Industrial Average closed down 506.93 points, or 0.98%, at 51,711.65. The S&P 500 dropped 90.66 points, or 1.21%, finishing at 7,408.30. The Nasdaq Composite suffered the steepest decline, falling 553.21 points, or 2.15%, to 25,137.69.
Multiple factors converged to drive the sell-off. First, a sudden escalation in Middle East geopolitical tensions—heightened friction between the US and Iran, combined with Houthi attacks on merchant ships in the Red Sea—pushed Brent crude futures above $100 per barrel. Surging oil prices fueled inflation expectations and risk aversion. Second, the US 10-year Treasury yield climbed to 4.7%, the highest in over 18 months. Rising yields increase the risk-free rate, directly pressuring tech stocks whose valuations depend heavily on discounted future cash flows.
Most critically, earnings reports from tech giants sparked doubts about AI investment returns. Alphabet, Google’s parent company, plunged over 7% despite solid search and cloud results, as markets questioned the aggressive expansion of its AI capital expenditures. Tesla’s quarterly revenue missed expectations and cash flow turned negative, causing its stock to crash more than 14% and wiping out roughly $200 billion in market value in a single day. The "Magnificent Seven" tech giants collectively lost about $800 billion in market capitalization. The AI narrative shifted from "limitless growth" to "capital efficiency," marking a fundamental change in US market dynamics.
Why Is the Global Semiconductor Sector Under Pressure?
The semiconductor industry is highly sensitive to macroeconomic conditions and closely tied to the capital expenditure cycles of tech giants. When markets doubt the efficiency of AI investments by companies like Alphabet, Amazon, and Microsoft, semiconductor suppliers providing computing chips feel the impact first.
While the Philadelphia Semiconductor Index saw a relatively mild drop (about 0.54%) amid the US sell-off, internal divergence was clear. Some memory chip stocks, such as Micron Technology, bucked the trend and rose over 3%. This shows the market isn’t indiscriminately selling semiconductors, but is instead repricing different segments—long-term demand for AI memory chips like HBM remains intact, though short-term valuations and earnings expectations are being adjusted.
Asian semiconductor stocks fell more sharply than their US counterparts, largely due to differences in liquidity structure and investor composition. Semiconductors carry significant weight in Korea’s KOSPI index, with SK Hynix and Samsung Electronics accounting for a large portion. Their declines amplify the overall index drop through weighting effects. Additionally, Asian markets open after US markets close, often "catching up" to overnight US volatility, which intensifies single-day price swings due to the time lag.
Is SK Hynix’s Drop Solely Driven by US Market Movements?
The US market sell-off is a direct trigger, but SK Hynix’s decline also stems from independent fundamentals.
Since July, SK Hynix shares have fallen about 27.58%, while Samsung Electronics dropped about 19.16% over the same period. These losses far exceed the adjustments seen in US semiconductor indices, indicating industry-specific pressures.
The main issue is a reassessment of HBM pricing power. According to a July 13 report by Korea Investment & Securities, SK Hynix’s projected operating profit for Q2 2026 is 60.4 trillion KRW, about 8% below the market consensus of 65 trillion KRW. Analysts note that SK Hynix’s HBM sales share is higher than competitors, and many orders are locked in through 3–5-year long-term agreements (LTA), limiting price increases. Although operating margins are expected to reach a record 74.6%, the market is more concerned about the pace of growth.
Essentially, it’s a case of "good but not good enough." SK Hynix’s profits are still growing rapidly—Q2 revenue is forecast to rise 264% year-over-year, and operating profit up 556%—but the market has already priced in such growth. Any signals falling short of extremely optimistic expectations trigger sell-offs. While LTAs stabilize revenue, they also restrict short-term pricing flexibility, creating valuation pressure when the market is chasing "outperformance."
How Are Korean Regulatory Policies Intensifying Market Volatility?
Beyond US contagion and earnings revisions, changes in Korea’s regulatory landscape played a key role in the July 24 sell-off.
On July 24, the Financial Services Commission of Korea announced stricter deposit requirements for retail investors trading single-stock leveraged ETFs, moving up the implementation date to July 31. The minimum deposit was raised from 10 million KRW to 30 million KRW, and must be held in cash—stocks, ETFs, and bonds no longer count toward the minimum. The new rules apply to both domestic and overseas-listed single-stock leveraged ETFs.
This policy directly pressures liquidity for leveraged product holders. Investors holding SK Hynix or Samsung Electronics-related leveraged ETFs must add cash deposits or close positions by July 31. The forced reduction in positions was concentrated on July 24, amplifying declines in the underlying stocks. The accelerated implementation, combined with the emotional shock from the US market’s overnight drop, created a dual resonance of liquidity contraction and declining risk appetite.
Have Valuations Already Priced in Sufficient Pessimism?
SK Hynix’s current valuation has reached historically extreme levels. According to Korea Exchange data, the company’s 12-month forward price-to-earnings ratio (PER) has dropped to about 4x. For comparison, this is lower than the 6.27x PER Samsung Electronics hit during the 2008 global financial crisis.
Twenty-four Korean brokerage firms still maintain a "Buy" rating on SK Hynix, with an average target price of 3,547,917 KRW—about 84.88% above the July 22 closing price. Their core thesis: large tech companies will continue investing in AI infrastructure over the next three years, and the fundamentals for HBM demand remain unchanged. LS Securities analysts note that current semiconductor doubts relate to margins, not peak profitability, and that buying at these depressed prices is a rational strategy.
Yet market hesitation is justified. Semiconductor stocks are highly cyclical, with share prices typically leading the industry cycle by 18–24 months. Even with strong fundamentals, the timing of a price rebound remains uncertain. An investor who bought SK Hynix near 2.3 million KRW commented that their hesitation isn’t about the company’s growth potential, but rather a lack of confidence in "when prices will recover." A 4x PER can be seen as "deeply undervalued," or as the market pricing in unrecognized downside risk—this divergence itself is a key source of volatility.
Does Short-Term Volatility Change the Long-Term Outlook?
Looking at fundamentals, SK Hynix’s leadership in the HBM market remains unchallenged. HBM capacity is pre-sold through 2027. Starting in Q3, HBM4 will enter full-scale production and sales, with ASP increases expected to return to market averages. UBS forecasts HBM’s share of DRAM revenue will rise from 15% in 2026 to 58% by 2030.
The expansion of LTAs is systematically reshaping the memory industry’s profit structure. Historically, memory pricing was dominated by spot markets, resulting in extreme earnings volatility. The widespread adoption of 3–5-year LTAs makes revenue more predictable, shifting the focus to "how long high profitability can be sustained" rather than "how much ASP grows each quarter." Ongoing HBM capacity utilization also limits supply for traditional memory, supporting the overall industry supply-demand balance.
July 24’s sell-off is best understood as a synchronized repricing of global risk assets amid multiple macro shocks, not a deterioration of SK Hynix’s competitive position. US tech giants’ AI capital expenditure debates, oil prices and interest rates driven by Middle East tensions, and the early implementation of Korea’s leveraged ETF regulations—all these factors combined to create a short-term window of downward resonance. For long-term investors, the real question isn’t "why did it drop today," but "does HBM’s long-term demand curve still point upward"—and that answer was not changed by the July 24 session.
Summary
SK Hynix’s July 24 decline resulted from a convergence of factors: US tech stocks fell sharply due to AI investment concerns and Middle East turmoil, transmitting sentiment and valuation impacts to Asian markets; SK Hynix itself faced ASP growth limits from long-term HBM agreements and Q2 earnings below consensus; and Korea’s new leveraged ETF deposit rules intensified liquidity pressures. Together, these created a short-term sell-off window.
Looking at a broader timeframe, SK Hynix’s July losses have exceeded 27%, and its 12-month forward PER has dropped to about 4x, an extreme historical low. With HBM4 mass production imminent, LTAs reducing profit volatility, and the AI infrastructure investment cycle still ongoing, these mid- and long-term supports remain intact despite daily volatility. The current market debate is essentially a pricing battle between "deep undervaluation" and "unresolved downside risk," and its outcome will hinge on HBM4’s ASP trajectory post-Q3 and the actual pace of tech giants’ capital spending.
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FAQ
Q: How much did SK Hynix drop on July 24?
During the July 24 session, SK Hynix’s losses reached about 5% at one point. As of publication, it was down roughly 3.91%, trading at 1,844,000 KRW (about $1,330). The stock briefly dipped to lower levels after the opening, closely matching the 1.79 million KRW low mentioned by users.
Q: How much did US stocks drop?
On July 23, the Dow Jones Industrial Average fell 0.97% to 51,711.65, the S&P 500 dropped 1.21% to 7,408.30, and the Nasdaq Composite sank 2.15% to 25,137.69. The "Magnificent Seven" tech giants lost about $800 billion in market capitalization in a single day.
Q: Why does a US market drop affect Korean stocks?
Semiconductors carry significant weight in Korea’s KOSPI index, and the performance of SK Hynix and Samsung Electronics strongly influences the index. Asian markets open after US markets close, often "catching up" to overnight US volatility. Additionally, global tech stock valuations are highly interconnected, so US tech giants’ repricing impacts Asian tech stocks via cross-market arbitrage and sentiment transmission.
Q: Is there a fundamental issue with SK Hynix?
It’s not a fundamental "problem," but rather a correction after market expectations were pushed too high. SK Hynix’s Q2 operating profit is expected to rise 556% year-over-year, but that’s about 8% below consensus. The main reason is that long-term HBM agreements have limited ASP growth. After HBM4 mass production begins in Q3, ASP increases are expected to return to market averages.
Q: What does a 4x PER mean?
SK Hynix’s 12-month forward PER has dropped to about 4x, lower than the 6.27x seen by Samsung Electronics during the 2008 financial crisis. This can be interpreted as extreme pricing for semiconductor cycle downside risk, or as a value opportunity assuming HBM’s long-term demand curve remains intact—the divergence between these views is the essence of the current market debate.
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