Shares of SK hynix (KRX:000660; NASDAQ:SKHY) staged a dramatic recovery on Friday, surging 29.95% on the Seoul bourse, although the weekly close still reflected a 2.3% decline. The rebound follows a turbulent period for the memory chipmaker, whose U.S.-listed American Depositary Receipts (ADRs) ended the session at $143.73, representing a notional premium of roughly 20.7% compared with the Seoul-listed ordinary shares.
The premium calculation is based on the July 31 closing exchange rate, with each ordinary share equivalent to ten ADRs. At Friday's Seoul close, the underlying value per ADR stood at approximately $119.06, while the Nasdaq-traded receipts finished at $143.73. This gap underscores persistent structural inefficiencies between the dual listings, a phenomenon that has been observed since the ADR's debut in July. Reuters reported an initial premium of 25.6% shortly after the U.S. listing began trading, with limited conversion mechanisms and robust demand from American investors contributing to the delayed price alignment.
Despite the sharp Friday rebound, the stock remains under pressure. Seoul shares ended the week down 2.3%, after a brutal July that saw a 35.2% drop. The current price is still 42.5% below its 52-week high. Trading volume was exceptionally heavy, with 10.5 million shares changing hands—1.73 times the 65-day average—indicating that speculative positioning continues to drive short-term volatility.
Strong Fundamentals Underpin Demand Outlook
Fundamentals, however, paint a more optimistic picture. South Korea's initial trade data for July revealed semiconductor exports soaring 179% year-on-year, while computer shipments jumped 404%. Overall exports climbed 62.8% to $98.89 billion, surpassing the Reuters poll forecast of a 59.0% increase. The trade surplus reached $30.32 billion, down from $36.09 billion in the prior month but still substantial. These provisional figures, subject to revision, reinforce the narrative of robust global demand for memory chips.
SK hynix's preliminary second-quarter results, released on July 29, showed revenue of ₩79.3 trillion, up 257% year-on-year, and operating profit of ₩60.5 trillion, a 557% surge. The operating margin expanded to 76%, up from 72% in the first quarter and 41% in the year-ago period. However, these results fell short of some lofty expectations, with revenue trailing projections by 5.6% and operating profit by 5.4%, partly due to delayed recognition of HBM4 revenue.
Management Confident Despite Analyst Caution
Analysts remain cautious. Lee Min-hee of BNK Investment & Securities voiced concerns that tech firms might pause infrastructure spending. Yet management struck a confident tone. President Song Hyun-jong noted that major customers are still requesting additional memory supply, and the company has finalized approximately ten long-term supply agreements. HBM4 mass shipments commenced in the second quarter, with plans to boost output in the second half. The timing of deliveries is now more critical than reported order increases, according to the company.
The market faces a fresh structural test on Monday, August 3, when Hong Kong-listed funds linked to SK hynix will implement adjustable leverage targets. During periods of extreme volatility, their daily exposure could be reduced from 2.0 times to as low as 1.1 times, potentially amplifying price swings.
Sector Peers and Upcoming Catalysts
Peer performance was mixed last week. Samsung Electronics (KRX:005930) rose 5.2% on the week, while Micron Technology (NASDAQ:MU) fell 10.6%. SanDisk Corp. (NASDAQ:SNDK) is scheduled to report results on Wednesday, August 5, and its commentary on NAND pricing and data-center demand will be closely watched for sector signals.
Key risks include a slowdown in hyperscaler capital expenditure, which could pressure HBM pricing, delays in HBM4 adoption, increased competition from Chinese manufacturers, and additional capacity coming online. Extended supply agreements might also cap spot price gains.
Investors are closely monitoring price convergence between the two listings. The persistent 20.7% ADR premium suggests that market structure, rather than fundamentals, is currently determining the marginal price. With export data continuing to support the demand thesis, the coming weeks will be critical in determining whether the premium narrows or widens further.
