SK Hynix’s AI-fueled profit jump spooks market

Stacked memory chips on circuit board as AI chipmaker stock falls after profit miss, SK Hynix

Key Points

01Q2 2026 revenue surged 257% to about 79.32T won
02Operating profit rose roughly 557% to about 60.54T won
03Results missed LSEG SmartEstimate revenue and profit forecasts
04Market reaction was negative, with shares and KOSPI tumbling

Blowout second-quarter results fall short of forecasts

SK Hynix (SKHY) reported second-quarter 2026 revenue of about 79.32 trillion won and operating profit of about 60.54 trillion won. These figures represent year-on-year increases of roughly 257% for revenue and 557% for operating profit, underscoring how sharply the company’s earnings have expanded over the past year.

Despite the strength of these headline numbers, the company missed market expectations compiled by LSEG SmartEstimate. Consensus forecasts had called for around 84 trillion won in revenue and about 64 trillion won in operating profit, leaving a gap between actual performance and what investors had been pricing in.

SK Hynix (SKHY) also reported net income of 93,922.6 billion won for the quarter on a K-IFRS basis. The quarter marked the first time the company’s cumulative first-half revenue exceeded 100 trillion won, highlighting the scale of demand it is capturing during the current upcycle.

AI infrastructure demand drives high-value memory sales

Management attributed the strong quarter to sustained demand growth from expanding AI infrastructure investments. The company cited higher prices and solid demand for high-value products such as high-bandwidth memory (HBM), DRAM for AI servers, and enterprise solid-state drives, which are critical components in AI data centers.

SK Hynix (SKHY) said that mass shipments of its HBM4 product began in the second quarter of 2026. It also distributed samples of its next-generation HBM4E product in the first half of the year, positioning the company to participate in future AI system upgrades as customers qualify these devices.

To support this trajectory, SK Hynix has signed long-term agreements with around ten customers. These contracts provide visibility into future demand for advanced memory solutions, tying the company’s growth prospects closely to ongoing investment in AI servers and related infrastructure.

Sharp market sell-off despite earnings surge

The earnings release and surrounding AI-related news were followed by a negative market reaction. SK Hynix’s American depositary receipts fell about 4.5% in pre-market trading, signaling investor disappointment with the miss versus consensus expectations.

Selling pressure was even more pronounced in South Korea. SK Hynix and Samsung shares declined by double digits, and the KOSPI index fell about 10.8% in one trading session amid heavy activity, reflecting broad concern across semiconductor and AI-related names.

The contrast between the company’s rapid profit growth and the sharp decline in share prices underscores how elevated expectations around AI demand have become. Investors appear to be reassessing what level of performance is sufficient to justify prior valuations, even as fundamentals for AI-focused memory products remain strong.

Key Takeaways

01SK Hynix’s Q2 2026 results show exceptional year-on-year growth, but the miss versus consensus illustrates how demanding market expectations are for AI-exposed chipmakers.
02AI infrastructure investment is clearly a central earnings driver, with HBM, AI server DRAM, and enterprise SSDs at the core of SK Hynix’s revenue and profit expansion.
03The launch of HBM4 mass shipments and HBM4E sampling, supported by long-term deals with around ten customers, ties the company’s outlook closely to future AI data center build-outs.
04The steep share-price and index declines around the results highlight that market sentiment can turn negative even on strong numbers when they fall short of ambitious forecasts.

References