SK Hynix Q2 Profit Margin Hits Record High, HBM4 and Long-Term Agreements Enhance Demand Visibility
- Core Viewpoint: SK Hynix's Q2 2026 revenue and operating profit hit record highs but fell short of the market's most optimistic expectations, triggering stock price volatility. AI memory demand remains strong, with HBM4 mass production and long-term agreements improving earnings stability. However, market concerns over peak memory pricing and capex expansion shift the valuation focus to cycle sustainability.
- Key Elements:
- Q2 revenue reached 79.32 trillion KRW (up 257% YoY), and operating profit hit 60.54 trillion KRW (up 557% YoY), both setting records but missing consensus estimates, mainly due to HBM long-term agreements reducing short-term price upside elasticity.
- The blended average selling price (ASP) for memory chips rose approximately 30% QoQ. Q3 DRAM shipments are expected to increase by 10% QoQ, with NAND growing in the low single digits, as price increases remain the primary driver.
- HBM4 has begun shipment, with samples of the 1c nanometer process HBM4E delivered to customers ahead of schedule, targeting mass production in 2027. SOCAMM 2 products are now in full supply, expanding the AI server memory product line.
- The company has completed long-term supply agreement negotiations with around 10 customers, including pricing structures and prepayment mechanisms, enhancing order visibility but limiting short-term price increase gains.
- Capex for 2026 is expected to reach a high of 40 trillion KRW, allocated for capacity expansion and advanced process migration. Q2 operating cash flow was 65.71 trillion KRW, with net cash of approximately 69.37 trillion KRW, providing solid support for expansion.
- Management stated that AI demand shows no signs of slowing down. The expansion of Agentic AI is extending memory demand from training to inference and long-term storage, with order conversion ongoing.
- Following the earnings release, the stock price initially rose but then fell over 11%. Market divergence centers on whether the record 76% operating margin is sustainable, with valuation hinging on the HBM4 advantage, returns from long-term agreements, and supply-demand balance.
Author: SoSoValue Research
SK Hynix released its Q2 2026 earnings: DRAM and NAND prices rose, and AI server storage demand expanded, driving revenue, operating profit, and margins to new all-time highs. HBM4 has begun shipping, high-value products like enterprise SSDs, server DRAM, and SOCAMM2 continued to scale. The company has also completed long-term supply agreement negotiations with approximately 10 core customers, further improving medium to long-term order visibility.
However, revenue and operating profit still fell short of the most optimistic market expectations. The significant increase in net profit was also largely driven by gains from investment assets, making it difficult to fully reflect the profitability of the core business. On the day before the earnings release, SK Hynix's Korean stock fell 14.65%. After the earnings report, the stock initially rose over 4% but turned negative after the conference call, currently down over 11% as of writing. This indicates that long-term agreements, HBM4 mass production, and supply tightness did not fully alleviate market concerns regarding below-expectation results, peaking memory prices, and expanding capital expenditure.
Q2 Performance: Revenue and Operating Profit Hit Records but Miss Consensus Estimates
Q2 revenue reached 79.32 trillion won, up 257% year-over-year and 51% quarter-over-quarter, missing the market consensus estimate of 84.17 trillion won.
Gross profit was 65.99 trillion won, up 451% year-over-year and 58% quarter-over-quarter. The gross margin improved from 79% in Q1 to 83%.
Operating profit amounted to 60.54 trillion won, up 557% year-over-year and 61% quarter-over-quarter, below the market estimate of 64.31 trillion won. The operating margin rose from 72% to a record 76%. EBITDA reached 64.56 trillion won, with an EBITDA margin of 81%.
Net profit surged 1,242% year-over-year to 93.92 trillion won, resulting in a net profit margin of 118%. However, this included 63.27 trillion won in gains related to investment assets. Market analysis suggests these gains are mainly linked to the sale of equity rights in Kioxia. Therefore, when evaluating the quality of core business profitability for this quarter, operating profit, gross margin, and operating cash flow are more meaningful references.
One reason for the results falling short of consensus estimates is SK Hynix's higher share of HBM revenue. HBM typically involves long-term pricing and supply arrangements, limiting the company's profit elasticity from the rapid price increases of recent general-purpose DRAM and NAND. This means long-term agreements enhance earnings stability while simultaneously reducing the company's upside exposure during periods of sharp increases in spot and short-term contract prices.
Memory Prices Continue to Rise, Q3 Shipments Maintain Growth
The blended average selling price for memory chips in Q2 increased by approximately 30% quarter-over-quarter, with shipments growing by a high single-digit percentage sequentially. Price increases remained the primary driver of revenue and margin improvement this quarter. DRAM accounted for about 73% of product revenue, while NAND represented about 27%.
The company projects global DRAM demand to grow by approximately a mid-teens percentage (around 20%) year-over-year in 2026, and NAND demand to grow by a high teens percentage (around 10%). The upgrade of AI server architectures is driving simultaneous expansion in HBM, server DRAM, and enterprise SSDs. The proliferation of Agentic AI is also extending storage demand from model training to inference, data retrieval, and long-term storage.
For Q3, SK Hynix expects DRAM shipments to grow by about 10% quarter-over-quarter and NAND shipments to grow in the low single digits. The company did not provide specific quarterly revenue or operating profit guidance. Therefore, the growth momentum for the second half of the year will still depend on DRAM and NAND contract prices, the ramp-up speed of HBM4, and the revenue share of high-value products.
On the supply side, the transition to advanced process nodes, the occupation of more wafer capacity by HBM, and the longer production cycles for new fab construction continue to limit the industry's effective supply. However, with current memory prices and margins at extremely high levels, the market will closely watch whether customer pre-buying is pulling future demand forward and how the supply-demand dynamics change once new capacity begins to come online from 2027.
HBM4 Enters Ramp-Up Phase, HBM4E Samples Delivered Ahead of Schedule
SK Hynix began shipping HBM4 in Q2 and plans to fully ramp up production in the second half of the year. The company stated that the products have met customer-required operating speeds and are competitive in terms of energy efficiency and cost.
Samples of HBM4E, utilizing the 1c nanometer process, were delivered to key customers in the first half of the year, ahead of the previously planned second-half sample delivery. This earlier delivery helps the company enter the customer validation and co-development process sooner, laying the groundwork for mass production in 2027.
SOCAMM2 products have also begun full-scale supply. These products target the high-capacity, low-power memory needs for the CPU side of AI servers, complementing the product portfolio where HBM primarily serves GPUs and AI accelerators. As the memory bottleneck in AI servers expands from individual GPUs to the entire system, SK Hynix's growth drivers are extending from HBM towards server DRAM, SOCAMM2, and enterprise SSDs.
On the NAND front, the 321-layer product became the company's highest-volume NAND product in Q1. The company plans to increase its share to approximately 50% of SK Hynix's domestic NAND capacity by the end of 2026. The transition to advanced process nodes helps reduce unit costs and enhances the supply capability of high-capacity enterprise SSDs.
Long-Term Agreements Expand to Approximately 10 Customers, Structural Shifts in Memory Cycles Begin
SK Hynix has completed long-term supply agreement negotiations with approximately 10 customers, including core clients, and continues discussions with other major customers. The new wave of long-term agreements includes pricing structures to manage memory price fluctuations. Some contracts also introduce prepayment or deposit mechanisms to enhance customer commitment and support capacity investments.
The value of long-term agreements for SK Hynix lies not only in locking in orders but also in improving visibility for capital expenditure decisions. Historically, the memory industry has often expanded capacity based on short-term prices and inventory cycles, easily leading to oversupply and price declines. Multi-year contracts, prepayments, and joint development mechanisms can transfer some expansion risks to customers and reduce cyclical earnings volatility.
The corresponding trade-off is that when general-purpose DRAM and NAND prices rise rapidly, products with long-term locked prices may not fully capture the price gains available in the spot market. This quarter's revenue and operating profit falling short of the most optimistic expectations already reflect the variance between demand stability and short-term price elasticity.
Capital Expenditure Rises to a High 40 Trillion Won, Cash Flow Provides Support
SK Hynix expects capital expenditure for 2026 to reach a high range of 40 trillion won. The focus will be on accelerating the mass production ramp-up at Cheongju M15X, transitioning to advanced process nodes, HBM backend packaging, and the initial expansion of Yongin Fab 1 in early 2027.
Q2 operating cash flow reached 65.71 trillion won, while capital expenditure for property, plant, and equipment was 10.67 trillion won. Based on a rough calculation of operating cash flow minus fixed asset purchases, quarterly free cash flow was approximately 55.04 trillion won.
As of the end of Q2, the company's cash and short-term financial assets stood at 87.96 trillion won, an increase of 33.63 trillion won from Q1. Interest-bearing debt decreased to 18.59 trillion won, resulting in net cash of approximately 69.37 trillion won. The debt-to-equity ratio fell to 7%, and the net debt-to-equity ratio was negative 26%.
The strong cash flow indicates the company currently has the capacity to simultaneously pursue capacity expansion, reduce debt, and enhance shareholder returns. However, as M15X, Yongin, P&T7, and other long-term production bases gradually expand, depreciation and fixed costs will increase. If the pace of AI capital expenditure slows, Samsung and Micron expand HBM4 supply, or Chinese memory manufacturers accelerate expansion in the general-purpose DRAM and NAND markets, the currently extremely high margins will face downward pressure.
Conference Call: AI Demand Shows No Signs of Slowing, Valuation Focus Shifts to Cycle Duration
Management stated that they have not yet observed a significant slowdown in AI investments from key customers. Major tech companies continue to expand data center construction and memory procurement, driven by AI service growth, insufficient existing compute power, and the higher demands Agentic AI places on server memory and storage capacity. Improvements in model efficiency could also lower AI usage costs, expand application scope, and thus increase overall infrastructure demand.
The core signal from the conference call is that SK Hynix remains confident in order volumes and supply tightness over the coming quarters. The ramp-up of HBM4 in the second half, the early sampling of HBM4E, long-term agreements with approximately 10 customers, and continued growth in Q3 DRAM and NAND shipments collectively indicate that AI demand is still translating into actual memory orders.
This earnings report alleviated market concerns about an abrupt reversal in AI memory demand but did not fully resolve valuation disagreements. Revenue and operating profit missing consensus estimates suggest that the market had already priced in more aggressive price and profit assumptions. An operating margin of 76% also makes investors more focused on how long this peak profitability can last.
SK Hynix's valuation in the next phase will depend on three variables: whether HBM4 can sustain its technology and market share advantages, whether long-term agreements can translate demand visibility into stable returns, and whether capital expenditure expansion can meet customer demand without creating oversupply. Q2 proves that AI memory demand remains robust, but the sharp stock price volatility indicates that the market's evaluation criteria have already shifted from whether profits can grow to whether record-high margins can be sustained.
