SK Hynix Q2 Earnings Miss Lofty Forecasts Despite Record Profit as HBM4 Ramps Up

Key Takeaways: SK Hynix reported record second-quarter results, with operating profit surging 557% year over year to KRW 60.5 trillion and revenue climbing 257% to KRW 79.3 trillion. However, both figures fell short of market expectations, sending the stock lower in after-hours trading. Analysts said the miss reflected slower gains in conventional memory pricing, the company's heavy exposure to HBM products, and long-term supply agreements that limited upside from rising spot prices.

SK Hynix posted another record-breaking quarter on Monday, but earnings that failed to meet Wall Street's elevated expectations renewed investor concerns over whether the AI memory leader can continue justifying its premium valuation.

For the second quarter, the company reported revenue of KRW 79.3 trillion, up 257% from a year earlier, while operating profit jumped 557% to KRW 60.5 trillion, both all-time quarterly highs. Even so, the results came in below consensus forecasts, which had projected revenue of approximately KRW 83.9 trillion and operating profit of KRW 64.2 trillion.

Following the earnings release, SK Hynix ADRs initially fell more than 9% in after-hours trading before recovering, while shares listed in South Korea opened sharply lower as investors digested the results.

Long-Term Customer Agreements Support Future Demand

Despite the earnings miss, management remained confident about the AI memory outlook.

The company said it has finalized long-term supply agreements with around 10 customers and is continuing negotiations with other major technology companies. Management believes these contracts will improve operational efficiency while providing greater revenue visibility and supporting sustainable long-term growth.

The announcement comes after a difficult stretch for the stock, which has experienced significant volatility in recent months as investors questioned whether the AI-driven memory boom can continue at its current pace.

Record Margins Highlight AI Memory Strength

Although expectations were not met, SK Hynix continued to demonstrate exceptional profitability.

Second-quarter operating margin reached 76.3%, up from 71.5% in the previous quarter, while gross margin climbed to 83%, reflecting strong pricing and demand for premium products including high-bandwidth memory (HBM), enterprise SSDs, and AI server memory.

Net profit climbed even higher to KRW 93.9 trillion, although that figure was boosted by a one-time investment gain from the partial sale of the company's stake in Kioxia, making operating profit a better indicator of underlying business performance.

Why Earnings Fell Short of Expectations

Analysts pointed to several structural factors behind the earnings miss.

First, SK Hynix's leading position in HBM means a larger portion of its revenue comes from products sold under longer-term pricing arrangements. While this strengthens business stability, it also reduces the company's ability to fully benefit from rapid increases in spot prices for conventional DRAM and NAND memory.

Second, price gains across the broader memory market slowed during the second quarter. Management indicated that DRAM prices increased by roughly 30% quarter over quarter, while NAND prices rose by approximately 50% to 60%, both noticeably slower than the stronger gains recorded during the first quarter.

Third, long-term agreements with major customers locked in pricing for a significant share of shipments. Industry reports suggest these contracts account for roughly half of SK Hynix's total sales volume, limiting additional upside as market prices continued to rise.

Market analysts noted that investors are now paying less attention to headline revenue growth and more attention to margins, guidance, and whether AI-related demand can continue supporting elevated earnings over the coming quarters.

HBM4 Shipments Accelerate

AI memory remains the company's primary growth engine.

SK Hynix confirmed that HBM4 has achieved customer-required operating speeds and offers industry-leading power efficiency and manufacturing competitiveness. Mass shipments began during the second quarter, with production expected to increase significantly during the second half of 2026.

The company also announced that samples of its next-generation HBM4E products have already been delivered to key customers after completing development during the first half of the year.

The expansion is particularly important as next-generation AI accelerator platforms are expected to drive another wave of HBM demand, positioning SK Hynix to maintain its leadership as a key supplier to major AI chipmakers.

NAND and Enterprise SSD Business Continue Improving

Beyond HBM, the company's NAND business also benefited from the ongoing AI infrastructure cycle.

SK Hynix said it is accelerating migration toward more advanced manufacturing processes while expanding production of higher-capacity products. Its 321-layer NAND technology has become the company's primary production node, with plans to account for roughly half of domestic output by year-end.

Demand for enterprise SSDs also remains strong as hyperscale cloud providers continue expanding AI data centers that require both high-performance storage and advanced memory solutions.

Strong Cash Position Supports Future Expansion

The company's financial position strengthened considerably during the quarter.

Cash and cash equivalents increased to KRW 88 trillion, up KRW 33.6 trillion from the previous quarter, while total debt declined to KRW 18.6 trillion, expanding net cash to KRW 69.4 trillion.

Management said the stronger balance sheet provides greater financial flexibility as it prepares for another phase of capacity expansion.

Capital expenditures for 2026 are still expected to land near the upper end of the KRW 40 trillion to KRW 50 trillion range. The company continues accelerating production at its M15X facility while preparing additional capacity at its Yongin semiconductor complex beginning in 2027.

Investors will now closely watch whether SK Hynix can balance aggressive investment in AI memory production with capital discipline as the current semiconductor upcycle continues.