SK Hynix’s Record Quarter Sparks a 9.6% Rout as the Market Punishes Perfection

SK Hynix posts historic Q2 results but shares plunge 9.6% as expectations outpace reality; Kospi tumbles 6% on AI spending fears and Chinese competition.

The paradox of South Korea’s semiconductor champion has never been starker. SK Hynix just delivered the strongest quarterly results in its corporate history — and the stock promptly crashed 9.61 percent to 1,401,000 won. The sell-off was not a verdict on weak business, but a brutal reminder that when expectations run hot enough, even records can disappoint.

Revenue for the second quarter hit 79.32 trillion won, a 257 percent surge from a year earlier. Operating profit soared 557 percent to 60.54 trillion won, while net income — boosted by a one-time gain of 63.27 trillion won from the sale of the Kioxia stake — exploded 1,242.5 percent to 93.92 trillion won. The operating margin reached a historic 76 percent.

Yet analysts had penciled in revenue as high as 84 trillion won and operating profit of roughly 64 trillion won. That gap between reality and anticipation was enough to trigger a wave of selling that erased nearly a tenth of the company’s market value in a single session.

A Market in Panic Mode

The rout at SK Hynix unfolded against a backdrop of outright fear across the Korean equity market. The Kospi index tumbled 5.98 percent to 5,663.24 points, triggering a trading halt. Since its peak on June 19, the benchmark has shed roughly 39.7 percent — with July alone accounting for a 31.8 percent decline that surpasses the monthly losses seen during the Asian financial crisis of the late 1990s. Samsung Electronics, the country’s largest stock, dropped more than 5 percent.

Adding to the anxiety was the Shanghai IPO of Chinese memory maker CXMT, which raised approximately $9.8 billion. Investors now worry that cheaper Chinese alternatives could erode the margins of established players over time. The scale of the damage is visible in SK Hynix’s share price: it now trades 53.1 percent below its 52-week high of 2,987,000 won.

Analysts Split on the Path Ahead

The analyst community is deeply divided. DS Investment & Securities maintains a bullish target of 3.1 million won, betting on the long-term HBM narrative. Others have slashed their forecasts dramatically: BNK Investment Securities cut its target to 1.48 million won, while Mirae Asset trimmed from 4.2 million to 2.8 million won. The concerns center on whether AI-related capital spending by big cloud providers can sustain its torrid pace, the risk of oversupply, and the absence of concrete shareholder return plans — though the finance department says it is reviewing additional payouts.

A $31 Billion Bet on the Next Generation

Management pushed back hard against talk of a cooling AI cycle. Song Hyun-jong, president of the corporate center, dismissed speculation about a spending slowdown among big tech clients, arguing that the shifting strategies reflect efforts to better utilize existing infrastructure and monetize it faster.

SK Hynix is doubling down. Capital expenditure for 2026 is planned in the range of $27.6 billion to $31 billion — roughly 50 percent above the 30.2 trillion won spent this year. The centerpiece of the strategy is LPDDR6, the next generation of mobile memory chips. Manufactured using a sixth-generation 10-nanometer process, the 16-gigabit modules will hit data rates of up to 14.4 Gbps, a 33 percent improvement over the current LPDDR5X standard. Dynamic voltage and frequency scaling techniques are expected to boost energy efficiency by more than 20 percent. Mass production is slated for the second half of 2026, with Xiaomi lined up as the first major customer. The company sees applications far beyond smartphones, including AI data centers.

To lock in demand, SK Hynix has signed long-term supply agreements with more than ten major clients. The contracts run for three to five years, cover high-bandwidth memory and AI server DRAM, and in some cases are backed by customer prepayments. The goal is stable pricing regardless of short-term economic fluctuations.

Meanwhile, HBM4 entered mass production in the second quarter, and samples of the next-generation HBM4E have already been delivered to customers, with volume production planned for 2027.

Can Growth Outrun the Doubts?

For the third quarter, SK Hynix guided for DRAM shipments to rise roughly 10 percent sequentially, while NAND is expected to post only low single-digit growth. The price momentum that drove the quarter — average selling prices for DRAM climbed 30 percent quarter-on-quarter and NAND prices rose about 50 percent — may be moderating.

The stock’s relative strength index has fallen to 33.2, signaling oversold territory. On a one-year basis, the shares are still up 115.6 percent. But the seven-day slide of nearly 27 percent and the monthly collapse of roughly half the company’s market value have left investors questioning whether the AI memory boom has further to run. SK Hynix’s record-breaking numbers answered one question — but the market is now asking a harder one.