[Chart=Naver Finance]

SK Hynix (000660) surged to 1.694 million won during morning trading today, recording a sharp rise of 28.14%. This is interpreted as the result of widespread expectations that recently announced consolidated financial results on an operating basis will significantly exceed market predictions. Major institutional investors' strong buying orders are flowing in, with support levels being breached all at once.

SK Hynix (000660) is showing explosive upward momentum in the KOSPI market during morning trading on July 31, 2026. As of this morning, it is trading at 1.694 million won, up 372,000 won or a remarkable 28.14% from the previous trading day. This strong performance is entirely attributed to the market's positive interpretation and expectations regarding the recently disclosed "consolidated financial basis operating (provisional) results." While specific figures have not been disclosed, the market is focusing on observations that the company will record an earnings surprise, with solid performance contributions from high-bandwidth memory (HBM) driven by surging AI semiconductor demand, combined with overall memory market recovery.

SK Hynix currently leads the global HBM market based on its distinctive technological capabilities and market share. In addition to close collaborative relationships with major AI chip manufacturers such as Nvidia, the company is also advancing in developing next-generation HBM products, further solidifying its position as a key infrastructure provider in the AI era. This provisional results announcement suggests that such strong market positioning is translating into actual numbers, serving as a powerful incentive for investors to buy. Market attention is now shifting beyond HBM to focus on the commercialization timeline of next-generation memory technologies and the extent of profitability improvement.

From a supply and demand perspective, large-scale net buying by foreign investors and institutional investors is identified as a major factor driving the stock price increase. Since the start of trading, institutions and foreign investors have been pouring in strong buy orders, with individual investors also chasing purchases. Recently disclosed announcements such as "Executive and Major Shareholder Specific Securities Ownership Reports" and "Major Shareholder Stock Changes Reports" did not contain content with significant market-wide implications, but there is room for interpreting insider movements in a positive direction. Additionally, the announcement regarding "Changes in Product and Service Transactions with Related Companies" is being read as part of efforts to enhance business structure efficiency and create synergies between subsidiaries, potentially providing positive signals regarding corporate fundamentals.

However, conservative opinions have emerged that SK Hynix's surge exceeding 28% during trading today could trigger short-term overheating. Current stock prices may reflect a considerable portion or even excessively anticipate market expectations in advance. Sharp increases over short periods inevitably add to valuation burdens and increase the likelihood of profit-taking selling pressure. In particular, the risk of sharp adjustments cannot be ruled out if provisional results fall short of expectations when final results are announced, or if AI semiconductor demand temporarily weakens due to changing market conditions.

An industry official stated, "While SK Hynix possesses strong competitiveness in the AI memory market led by HBM, the short-term stock surge is driven largely by investment sentiment. Careful investment approaches are necessary, closely monitoring final results announcements, global economic conditions, and competitors' movements going forward." At this point, SK Hynix's stock price appears to have secured the 1.5 million won level as a strong support line, but breaking through resistance at the upper 1.7 million won level requires strong momentum for further gains. While long-term growth prospects for the memory semiconductor industry remain positive, individual company stock movements may respond more sensitively to short-term volatility, requiring caution according to prevailing analysis.

This article is not investment advice, and responsibility for investment decisions lies solely with the investor.

[Investment Caution] The data and analysis provided in this article are reference information based on market conditions only and do not guarantee returns for specific stocks or recommend buying or selling. Final decision-making and responsibility for all investments rest solely with the investor.