SK hynix Inc. (KRX:000660; NASDAQ:SKHY) experienced a significant divergence between its Seoul-listed common shares and American depositary receipts (ADRs) on Thursday. While the common stock in Seoul closed down 5.6% at 1.322 million won, the ADR gained 15.3% to around $146.25 by 1 p.m. EDT. This disparity resulted in a U.S. premium of approximately 60.0%, based on the 10-to-one ADR ratio and a currency conversion rate of 1,446.27 won per dollar.
Earnings Miss and Market Reaction
The company's preliminary second-quarter results fell short of consensus estimates. Revenue came in at 79.32 trillion won, 5.6% below the expected 84.00 trillion won, while operating profit reached 60.54 trillion won, missing the consensus of 64.00 trillion won by 5.4%. Despite this, the operating margin improved to 76% from 72% in the first quarter, highlighting strong operational expansion. The company noted that major customers continue to request more memory supply, and it has secured long-term deals with about 10 clients, typically lasting five years.
ADR Premium and Market Dynamics
The prevailing premium of 60.0% reflects a lack of fungibility between the two securities, which prevents straightforward arbitrage. Limited ADR availability, combined with earnings forecasts, influences the U.S. price. The ADR premium has widened from 36% on July 13 to 60.0% on July 30, a gain of 24 percentage points. Each common share is equivalent to ten ADRs, and the indicative U.S. premium is calculated using the latest exchange rate.
Financial Performance and Key Metrics
SK hynix reported strong year-over-year growth, with revenue up 257% and operating profit up 557% compared to Q2 2025. Net income surged 1,242% to 93.92 trillion won, though analysts caution that this includes 63.3 trillion won in gains from investment assets, primarily from the sale of a stake in a NAND flash memory firm. Cash and cash equivalents stood at 88 trillion won, with net cash of 69.4 trillion won after debt fell to 18.6 trillion won. Capital expenditure is approaching the high-40-trillion-won band, up from 30.2 trillion won a year earlier.
Investor Sentiment and Shareholder Returns
Investor sentiment has been dampened by the lack of a concrete shareholder return policy. Greg Roh of Hyundai Motor Securities noted that SK hynix needs to address this to turn around sentiment. The company plans to provide an update later this year. Chairman Chey Tae-won recently purchased 3,620 shares for about 4.8 billion won, his first direct purchase, signaling confidence but not substituting for a formal payout policy.
Seoul Selloff and Broader Market Context
The sharp decline in Seoul was exacerbated by the liquidation of leveraged retail trades amid a broader market selloff. SK hynix fell 24.8% over the five sessions ending Thursday, including a 14.7% drop in the two sessions following the earnings release. In contrast, peer Samsung Electronics (KRX:005930) slipped just 0.7% on Thursday, supported by its five-year minimum pricing agreements and ongoing dividend talks. The ADR recovery faces a test in Seoul on Friday, with increased margin requirements for single-stock leveraged products set to begin.
Outlook and Risks
While demand indicators remain solid, with HBM4 entering mass shipment and output expected to ramp up in the second half, risks persist. The ADR premium may narrow suddenly, long-term agreements could limit further price increases, and increased expenditure might reignite oversupply fears. Additionally, the net profit boost from investment gains is unlikely to recur. July trade figures, due Saturday, are expected to show exports climbing 59% from a year earlier, with semiconductor shipments growing 180.6% in the first 20 days.
