SK Hynix has just delivered its most impressive quarterly report on record, yet the AI memory boom is now defined by a subtle but critical miss.
For the second quarter of fiscal 2026, SK Hynix reported revenue of 79.32 trillion Korean won, a staggering 257% increase year-over-year and 51% growth quarter-over-quarter. While seemingly flawless, this figure fell approximately 5.5% short of market consensus expectations of 83.9 trillion won. Operating profit reached 60.54 trillion won, soaring 557% year-over-year and rising 61% from the previous quarter, but it also missed consensus by about 5.7%, which stood at 64.2 trillion won.
The company's operating profit margin hit a record 76.3% for the storage industry, while its gross margin reached 83%—surpassing Nvidia's roughly 75% and approaching the profitability levels of software platform giants like Meta, which hover around 82%.
What makes the situation more intriguing is the market's reaction: before the earnings release, SK Hynix's stock had already dropped about 47% from its June 22 peak. Following the report, its US ADR initially fell over 5% before recovering. In the domestic Korean market, shares opened 3-4% higher the next day but then plunged sharply.
In essence, the absolute data set new records, but the growth momentum fell short of expectations, leading to a tug-of-war between the "best ever" and "below expectations."
Revenue and Operating Profit Margin Trends
Why did a 557% profit increase still result in a miss? The answer lies in LTA.
The root of SK Hynix's earnings miss is hidden within its exceptionally high revenue concentration in HBM. An LTA (Long-Term Agreement) is a 3-5 year supply contract where AI chip clients and memory manufacturers like SK Hynix lock in prices at the time of signing, which do not fluctuate with the spot market. For Nvidia, the largest shipper of AI training chips, this locked-in relationship ensures supply security. For SK Hynix, however, it is a double-edged sword: the quarter's average selling price (ASP) for DRAM saw its sequential increase drop sharply from about 60% in the first quarter to roughly 30%, while NAND ASP growth also slowed from approximately 70% to 50-55%.
The underlying arithmetic is simple: about 50% of SK Hynix's revenue is locked into LTA contracts, which reflects its dominant share in the HBM market. Simultaneously, the spot DRAM market continued to surge in the same quarter. According to TrendForce, second-quarter general DRAM contract prices rose 58-63% sequentially, and NAND flash prices increased by 70-75%. SK Hynix's actual ASP growth was only about half of this, meaning the company captured the volume but not the full price elasticity. A report from Korean firm KIS Securities on July 13 had already warned of this contradiction, lowering its second-quarter operating profit forecast to 60.4 trillion won—remarkably close to the actual figure of 60.54 trillion won.
It is crucial to emphasize that this miss does not indicate a deterioration in operations. On the contrary, the operating profit margin improved from 71.5% in the first quarter to 76.3%, and all key metrics—absolute profit, revenue, gross margin, and operating margin—set all-time highs. The issue is simply that the market priced its expectations on the path of rising spot prices, while SK Hynix chose a more stable, albeit less exciting, LTA-driven path.
ASP Comparison of the Three Major Memory Giants
The three major players are showing divergent results in the same memory supercycle. Samsung Electronics reported second-quarter revenue of 171 trillion won and operating profit of 89.4 trillion won, beating consensus on both metrics. Its DRAM ASP rose over 40% sequentially, and NAND ASP increased to the mid-60% range. HBM4 production began in February, with sales already exceeding $1.2 billion. Once lagging in the HBM race, Samsung is now catching up using its conglomerate resource advantages.
Micron Technology had a blockbuster fiscal third quarter: revenue of $41.46 billion was 16% above expectations; non-GAAP EPS of $25.11 was 22.5% higher than forecast; and gross margin reached 84.9%. Its fourth-quarter guidance includes revenue of $50 billion (plus or minus $1 billion) and a gross margin of about 86%. Micron's DRAM ASP surged over 60% sequentially, and NAND ASP rose about 85%, both far exceeding SK Hynix's figures.
While SK Hynix boasts the highest company-level operating profit margin at 76.3% (compared to Samsung Group's 52% and Micron's ~68%), it was the only one to miss consensus this quarter. It is worth noting that Samsung's semiconductor (DS) division's profit margin is estimated at around 80%, higher than SK Hynix's, but the Samsung Group's overall figure is dragged down by lower-margin businesses like mobile phones and displays. This contrast reveals that the HBM leader enjoys the highest company-level margins and the most stable customer relationships, but its strong LTA lock-in also compresses the elasticity of spot price gains. In short, SK Hynix traded ASP flexibility for certainty.
HBM4 Production and Volume Ramp in the Second Half: A Catalyst for ASP Elasticity
If LTA was the primary cause of the second-quarter miss, the volume ramp of HBM4 is the key variable for reversing expectations in the second half of the year. SK Hynix confirmed in its earnings report that HBM4 began mass production and shipment in the second quarter, with shipment volumes expected to expand continuously in the second half. Samples of the more advanced HBM4E were delivered to customers in the first half of 2026.
KIS Securities predicts that as HBM4 volume ramps up from the third quarter, SK Hynix's ASP will realign closer to market averages. This suggests that the sequential increase in DRAM ASP for the third quarter could recover from the 30% level, partially offsetting the "discount" imposed by LTA locks. On the demand side, the volume ramp of Nvidia's next-generation AI accelerator, Vera Rubin, will directly boost HBM4 demand. Additionally, the expansion of Agentic AI applications is pushing AI memory demand from training to inference. SK Hynix's management emphasizes that customer demand still exceeds supply, and the company's key competitive advantage lies in its ability to meet large-scale shipment requirements. In other words, the second-quarter ASP discount was not due to a lack of orders but because contract prices were lower than spot prices. As the shipment mix improves with HBM4, unit revenue still has significant upside.
On the supply side, SK Hynix is increasing its capital expenditure. The full-year 2026 capex is expected to be at the upper end of the 40-50 trillion won range, primarily for accelerating production at the M15X DRAM fab, the P&T7 advanced packaging facility, the M17 NAND production base, and the Yongin semiconductor cluster, which will begin production in early 2027. By the end of the second quarter, SK Hynix's cash reserves surged to 88 trillion won, with net cash reaching 69.4 trillion won (approximately $45.6 billion), fully recovering its balance sheet from the cycle bottom.
The LTA Model is Reshaping the Valuation Logic for the Storage Industry
In the short term, LTA is causing SK Hynix to lag behind Samsung and Micron during this spot price rally. In the long term, however, it may be changing the way the storage industry is valued. Traditionally, storage has been valued as a strong cyclical stock, where ASP fluctuations determine profit margins, which in turn dictate stock price volatility. However, the adoption of LTAs is smoothing out the revenue curves for memory manufacturers. About 50% of SK Hynix's revenue is locked into LTAs, Micron has signed 16 SCA (Strategic Customer Agreements) with a goal of converting over 50% of its revenue to long-term contracts, and Samsung is also accelerating a similar model.
As ASP volatility is compressed, the market's pricing anchor shifts from "quarterly ASP growth" to "sustainability of high profitability." For leaders like SK Hynix and Micron, this implies a potential valuation migration from "cyclical stocks" to "AI infrastructure assets." The trade-off is that during certain quarters of a supercycle, stock price momentum may appear "less exciting." Investors will need to adapt to the idea that the profit curve for memory leaders will more closely resemble that of cloud service or semiconductor equipment companies than traditional commodity memory producers.
Returning to the financial statements, one figure requires special attention: SK Hynix's second-quarter net profit was 93.92 trillion won, resulting in a net profit margin of 118%. This figure exceeds 100% because it includes non-operating gains of approximately 62.17 trillion won (pre-tax) primarily from the sale of Kioxia shares. Applying the company's effective tax rate of about 23.5%, the after-tax impact of this non-operating gain is roughly 47.6 trillion won. After deducting this, core operating net profit is estimated at 46.3 trillion won. While this anomaly does not affect the assessment of the core business, it is important to note to avoid misinterpreting the headline net profit margin as an operating metric.
Focus on ASP Growth After the HBM4 Ramp
The real takeaway from SK Hynix's earnings is not the 557% profit growth, but the shift in the industry's pricing mechanism as the AI memory boom enters its second phase. The most important metric to track in the coming quarter is not whether revenue can break another record, but whether the HBM4 volume ramp can pull SK Hynix's ASP growth back in line with Samsung and Micron. If the sequential DRAM ASP increase returns to the 40-50% range in the third quarter, the second-quarter miss will be redefined as a "transitional discount." If the ASP remains near the 30% level, the market may begin to seriously consider the long-term ceiling that LTAs impose on the valuation of memory leaders. Regardless of the path, the valuation logic for the storage industry has fundamentally changed from just two years ago.
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