SK Hynix Posts Record 76% Operating Margin, Beating TSMC for Third Straight Quarter

 What if a semiconductor company could keep roughly 7,600 won in operating profit for every 10,000 won in sales?

SK Hynix achieved exactly that in the second quarter of 2026, reporting a record operating margin of 76%.

Strong demand for high-bandwidth memory, or HBM, combined with sharp price increases in conventional DRAM and NAND flash memory, pushed the Korean chipmaker to another historic quarterly performance.

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SK Hynix Reports Record Quarterly Earnings

According to the company’s preliminary earnings report, SK Hynix posted the following results for the second quarter of 2026:

• Revenue: 79.32 trillion won
• Operating profit: 60.54 trillion won
• Operating margin: 76%
• Year-over-year revenue growth: 257%
• Year-over-year operating profit growth: 557%

Revenue increased by 51% from the previous quarter, while operating profit jumped by 61%.

The company’s cumulative revenue for the first half of 2026 reached 131.90 trillion won, surpassing 100 trillion won for the first time on a half-year basis.

These figures are preliminary and have not yet completed an external auditor’s review, meaning they may be adjusted during the review process.

What Does a 76% Operating Margin Mean?

An operating margin measures how much profit a company earns from its core business after covering operating expenses.

A 76% operating margin means SK Hynix generated approximately 76 won in operating profit from every 100 won in revenue.

Such profitability is exceptionally rare in manufacturing, particularly in the semiconductor industry, where companies must continuously invest enormous amounts of capital in production facilities, research and advanced equipment.

SK Hynix’s operating margin increased by four percentage points from 72% in the previous quarter, setting another company record.

Higher Than TSMC for Three Consecutive Quarters

SK Hynix also recorded a higher operating margin than Taiwan Semiconductor Manufacturing Company, the world’s largest contract chip manufacturer.

TSMC posted an operating margin of 60.3% in the second quarter of 2026. SK Hynix therefore maintained a margin advantage of approximately 15 percentage points.

This marked the third consecutive quarter in which SK Hynix surpassed TSMC in operating margin.

However, the two companies operate fundamentally different businesses. SK Hynix primarily manufactures memory chips, while TSMC produces logic chips designed by other companies.

The comparison should therefore be viewed as an indicator of the extraordinary profitability of the current AI memory market, rather than a direct measure of which company has the stronger overall business.

HBM Was Not the Only Growth Engine

HBM remains one of the most important drivers of SK Hynix’s performance.

The advanced memory technology is essential for AI accelerators because it allows large amounts of data to move rapidly between processors and memory. Demand has surged as global technology companies expand their AI data centers.

However, SK Hynix’s record earnings were not driven by HBM alone.

Prices for conventional DRAM and NAND flash memory also rose sharply. Strong demand for AI server DRAM and enterprise solid-state drives, or eSSDs, provided additional support.

According to market research firm TrendForce, contract prices for conventional DRAM increased by approximately 58% to 63% from the previous quarter. NAND prices reportedly rose by around 55% to 60%.

In some segments, conventional DRAM margins have reportedly climbed above those of HBM.

SK Hynix currently generates about 30% of its total DRAM shipments from HBM, while conventional products account for the remaining share.

Why Is the Memory Supply So Tight?

Major memory manufacturers have allocated more production capacity to HBM to meet rapidly growing AI demand.

At the same time, leading cloud service providers and global technology companies have expanded long-term supply agreements with chipmakers.

These developments have restricted the supply of conventional memory products. As demand continued to rise, limited supply allowed manufacturers to raise prices and improve margins.

SK Hynix said it was negotiating long-term supply agreements with around 10 customers, including major strategic clients.

The growing use of multi-year contracts could provide memory manufacturers with greater demand visibility and reduce some of the extreme volatility that has historically characterized the industry.

A Dramatic Turnaround From the Memory Downturn

SK Hynix’s latest performance is even more remarkable when compared with the severe memory downturn of 2023.

The company’s operating margin fell to approximately negative 67% in the first quarter of 2023. It returned to profitability with a 3% margin in the fourth quarter of that year and has since continued to improve.

In just over three years, SK Hynix moved from one of its deepest downturns to a record 76% operating margin.

The turnaround illustrates how dramatically AI infrastructure investment has changed the global memory market.

SK Hynix Builds a 69-Trillion-Won Net Cash Position

The record earnings have also transformed the company’s balance sheet.

At the end of the second quarter, SK Hynix held approximately 88 trillion won in cash and cash equivalents. Its total borrowings declined to around 18.6 trillion won.

This resulted in a net cash position of approximately 69.4 trillion won.

A company is considered to have net cash when its cash holdings exceed its interest-bearing debt. This gives SK Hynix considerable financial flexibility to expand production and invest in future technologies.

The company plans to allocate capital to several major projects, including:

• The Yongin Semiconductor Cluster
• Early production expansion at the Cheongju M15X fabrication facility
• Next-generation HBM production capacity
• The P&T7 semiconductor packaging facility
• The M17 NAND production base

The strategy is clear: use the cash generated during the current boom to defend the company’s technological and manufacturing leadership in the next generation of AI memory.

What Should Investors Watch Next?

The latest results suggest that the AI memory supercycle remains powerful.

Demand is no longer limited to HBM. Conventional DRAM, NAND flash and enterprise SSDs are also benefiting from tighter supply and expanding AI infrastructure investment.

However, record earnings do not guarantee that the company’s stock price will continue rising. Investors should closely monitor several factors:

• The sustainability of global AI data center investment
• HBM4 mass-production and customer qualification schedules
• Competition from Samsung Electronics and Micron
• The duration of the current memory price increase
• The possibility of oversupply following aggressive capacity expansion
• Whether current growth expectations are already reflected in the share price

Semiconductors remain a highly cyclical industry. The same supply shortages that drive prices higher today can eventually encourage excessive investment and create oversupply.

Final Thoughts

SK Hynix’s 76% operating margin is more than another quarterly earnings record.

It shows how AI is reshaping the economics of the memory industry. HBM has become a strategically important component of AI infrastructure, while the shift toward advanced memory production has also tightened supplies of conventional DRAM and NAND.

The company has now built the technology, customer relationships and financial resources needed to invest aggressively in its next stage of growth.

The key question is whether SK Hynix can maintain its leadership as HBM4 enters mass production and competition across the global AI memory market intensifies.

For now, its second-quarter results demonstrate that memory chips have become one of the most profitable and strategically important parts of the global AI supply chain.

This article is based on publicly available corporate disclosures and news reports. It is provided for informational purposes only and does not constitute investment advice.