SK hynix operating profit surges 557% on AI boom, but shares tumble as expectations outpace reality

Reviewed byNidhi Govil

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South Korean memory giant SK hynix posted record second-quarter earnings with operating profit jumping 557% year-over-year to $42 billion, fueled by explosive AI-driven demand for high-bandwidth memory chips. Despite the historic performance, shares plunged as results missed analyst forecasts and global AI selloffs intensified concerns about market sustainability.

Record Quarterly Operating Profit Falls Short of Sky-High Expectations

SK hynix delivered what the company described as an all-time high quarterly performance, with second-quarter revenue reaching 79.32 trillion won ($55.6 billion) and operating profit hitting 60.54 trillion won ($42 billion), marking a 557% year-over-year increase

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. The memory chip maker achieved a record 76% operating margin, driven by surging demand for memory chips from the AI industry

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. Net profit soared an even more dramatic 1,242% to 94 trillion won ($64 billion), boosted by a one-off sale of its 20 trillion won stake in flash memory maker Kioxia

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Yet the record-breaking results landed below the 64.1 trillion won operating profit that brokerages surveyed by Yonhap Infomax had modeled

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. Analysts attributed the miss to product mix and high-value shipments pushed into the second half, with executives saying the gap should close as HBM4 and 1c-node conventional DRAM ramp up

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. The shortfall against investor expectations proved costly, with shares tumbling around 10% in Seoul on Wednesday

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AI-Driven Demand Pushes Prices Higher as Supply Constraints Persist

The AI boom continues to reshape the memory market, with DRAM average selling prices rising roughly 30% during the quarter and NAND prices climbing in the mid-50% range

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. SK hynix, a specialist supplier of high-bandwidth memory chips to Nvidia, has seen its fortunes rise meteorically as the global race to build AI data center boom infrastructure accelerates

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. Third-quarter DRAM bit shipments are guided up around 10% sequentially, with NAND shipments expected to rise by a low single-digit percentage

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Source: Wccftech

Source: Wccftech

CEO Kwak Noh-jung called 2027 the worst year of the shortage and put the end of the crunch beyond 2030

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. Full-year DRAM demand is growing at a mid-20% rate by the company's own estimate, against bit shipments guided up around 10% next quarter

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. KB Securities analyst Kim Dong-won forecasts memory chip prices are likely to rise at least 30% in the third quarter, with supply constraints likely to persist through 2028

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Long-Term Supply Deals Aim to Stabilize Price Volatility

SK hynix revealed it has struck around ten long-term supply deals with key customers, many of them AI players, in an effort to smooth out volatile memory prices

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. Company president Song Hyeon-jong said SK hynix's relationship with customers is evolving beyond transactional relations into more strategic long-term partnerships, with deals typically lasting up to five years

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"The objective is to reduce uncertainty arising from short-term market volatility while enhancing long-term business stability for both our customers and SK hynix," Song said

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. The agreements include mechanisms such as deposits that can strengthen contract implementation and demand visibility, alongside long-term volume commitments

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. This approach suggests big tech customers are attempting to keep memory prices as low as possible by helping the Korean company manage its cashflow.

Capital Spending Surges to $27 Billion Despite Market Turbulence

Source: Tom's Hardware

Source: Tom's Hardware

SK hynix used the Seoul earnings call to lift its 2026 capital spending guidance to the high 40 trillion won range ($27 billion) as AI server demand keeps outrunning what the company can produce

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. The funds will accelerate mass production at the M15X fab in Cheongju, the Yongin Phase 1 cleanroom that opens in early 2027, and the previously announced P&T7 advanced packaging plant and M17 NAND base, which will be built in phases according to customer demand

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None of the capacity now being funded will produce wafers before 2027

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. Cash and short-term investments hit 88 trillion won at the quarter's end, up 33.6 trillion won in three months, against interest-bearing debt of 18.6 trillion won and a debt-to-equity ratio of 7%

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. Earlier this month, SK hynix raised $26.51 billion through the largest share sale by a non-U.S. company on record, pricing 177.9 million American depositary receipts at $149 each

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Global AI Selloffs Trigger Sharp Stock Declines

Source: Market Screener

Source: Market Screener

Triggered by global AI selloffs, SK hynix closed down around 10% in Seoul on Wednesday, with Samsung Electronics falling 5%

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. The KOSPI ended the session 6% lower and below 6,000 for the first time since April 14, touching 5,262 at one point and cutting a year-to-date gain that had reached 116% in June to 34%

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. Over the past month, SK hynix has lost 47% of its value and Samsung 37%, with geopolitical tensions and concerns about AI industry sustainability spooking investors

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Weaker shareholder-return expectations compounded the earnings miss, with SK hynix telling analysts only that additional returns remain under evaluation and would be disclosed within the year

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. Josh Gilbert, eToro's lead analyst for Asia-Pacific and the Middle East, told Bloomberg that "expectations had simply moved ahead of what even another record quarter could deliver"

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. The stock slump comes despite parent firm SK Group announcing plans for a new $500 billion collaboration with Nvidia to invest in AI infrastructure

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