SK Hynix Stock Tests KRW 1.633 Million Support After 15% Pullback
SK Hynix shares came under renewed pressure on October 12, 2026, as the South Korean memory-chip maker tested a key technical support level following a decline of nearly 15% from its recent high of KRW 1.92 million. The stock was trading around KRW 1.633 million, with chart indicators pointing to continued selling pressure despite signs that the shares had become oversold.
The pullback puts investors at a crossroads. A stabilisation near support could encourage a short-term rebound, but a sustained break below that level could expose the stock to further losses. The immediate chart setup is important, yet SK Hynix's longer-term outlook also depends on demand for high-bandwidth memory (HBM), AI infrastructure spending and expectations for the global semiconductor industry.
What Triggered the Sell-Off in SK Hynix?
The immediate story is technical rather than a confirmed deterioration in the company's operating performance. SK Hynix has fallen from its recent high of KRW 1.92 million, while its chart has broken below important support levels and its trend indicators continue to signal weakness.
A broader pullback across memory-chip stocks has added pressure. On October 8, shares of SK Hynix and other memory and data-storage companies declined after Samsung Electronics issued preliminary third-quarter results that fell short of analyst expectations. Samsung projected revenue of KRW 195 trillion and operating profit of KRW 107.4 trillion, below the respective consensus estimates of KRW 205.26 trillion and KRW 112.73 trillion cited by Investopedia.
The results raised questions about whether investors' expectations for the memory industry had become too ambitious after a strong AI-driven rally.
That does not necessarily mean demand for memory chips is collapsing. Rather, investors may be reassessing how much future growth is already reflected in semiconductor valuations.
Why the KRW 1.633 Million Support Level Matters
Technical support is a price area where buying interest may emerge and slow a decline. It is not a guaranteed floor.
Investing.com's five-hour chart analysis identified a support zone between KRW 1.59 million and KRW 1.63 million, with KRW 1.633 million near the upper edge of that zone. The same analysis noted that the stock had broken below its earlier support near KRW 1.75 million.
The chart also showed a completed head-and-shoulders top pattern. This formation consists of three peaks, with the middle peak higher than the other two. A break below the pattern's neckline is traditionally interpreted as a bearish signal because it suggests that buyers have lost control of an important price area.
However, chart patterns are probabilistic tools, not reliable predictions on their own.
The current setup presents two possible scenarios:
If support holds: SK Hynix could attempt a relief rebound as short-term selling pressure eases. A recovery would need confirmation from price action and trading volume.
If support breaks decisively: The next area around KRW 1.59 million could come into focus, followed by lower levels if selling accelerates.
These are technical scenarios, not guaranteed outcomes or investment recommendations.
Oversold Indicators Do Not Guarantee a Rebound
SK Hynix's short-term momentum indicators suggest that selling has become extended.
The five-hour chart showed a Relative Strength Index (RSI) of approximately 32.7 and a Money Flow Index (MFI) of 14.25. The RSI measures the speed and magnitude of recent price changes, while the MFI combines price and volume to estimate buying and selling pressure. Both indicators can help traders identify potentially oversold conditions.
An RSI below 30 is commonly considered oversold, although thresholds are guidelines rather than rules. An oversold reading means a stock has fallen sharply relative to its recent trading history; it does not mean that the decline must end immediately.
In a strong downtrend, indicators can remain oversold for an extended period. A brief bounce can also occur without changing the broader direction.
For that reason, investors should watch whether SK Hynix can reclaim lost support levels and sustain a recovery rather than relying on one indicator.
The Longer-Term Question: Can AI Memory Demand Support the Stock?
SK Hynix remains an important supplier of advanced memory used in AI infrastructure, including high-bandwidth memory (HBM). HBM is designed to move large amounts of data rapidly between memory and processors, making it particularly valuable in AI accelerators and other high-performance computing systems.
The long-term investment case depends on continued demand for AI computing, the company's ability to maintain its competitive position and the profitability of its memory products.
But the sector is cyclical. Memory prices and earnings can fluctuate significantly as supply expands, demand changes and competitors increase production.
The latest semiconductor sell-off illustrates how a company can remain strategically important while its shares decline because investors question future growth expectations or valuation levels.
Investors should therefore distinguish between a short-term technical correction and a fundamental change in the company's business outlook.
What Investors Should Watch Next
Three developments could help clarify the direction of SK Hynix shares:
Price action around KRW 1.59–1.63 million: Holding this zone could support a stabilisation attempt, while a decisive break below it would weaken the near-term chart.
Semiconductor earnings and guidance: Results from SK Hynix and other memory producers will help reveal whether AI demand, pricing and margins remain strong enough to justify market expectations.
Memory supply and pricing: An increase in production capacity could eventually pressure prices, even if demand for AI-related memory continues to expand.
Investors should also monitor whether the stock's rebound, if one develops, is accompanied by stronger buying volume and improving momentum.
Conclusion: SK Hynix Faces a Critical Technical Test
SK Hynix is testing an important support area after falling nearly 15% from its recent high. Oversold indicators leave room for a short-term bounce, but the broken chart structure and wider weakness in memory stocks suggest that downside risks remain.
The most important distinction is between a technical recovery and a genuine improvement in investor confidence. Support levels can help frame the immediate risk, but earnings, AI-related memory demand and future supply conditions will ultimately determine the company's longer-term outlook.
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Disclaimer: This article is for informational and educational purposes only and should not be considered investment advice.