Whipsawed: SK Hynix ADR Serves Up 27% Gains and 13% Losses in First Week as HBM4 Competition Looms
Published on 07/18/2026 at 17:05 | Redaktion boerse-global.de
SK Hynix’s first week as a Nasdaq-listed stock was nothing short of a rollercoaster. The American depositary receipt surged 27% on Wednesday to $193.92, only to give back 13% in early trade the following day, dropping to $184.50. In Seoul, the underlying shares swung even more violently: an 8% rally on Wednesday was erased by an 11.5% plunge on Thursday — the sharpest single-day loss in company history — and another 11.53% decline on Friday closed the stock at 1,842,000 won, well below the prior week’s 2,082,000 won.
Amid the turmoil, SK Group Chairman Chey Tae-won stepped in with an unusual public appeal. He asked investors to remain calm, arguing that the stock would rise over the long term thanks to sustained demand for memory chips, while conceding he could not predict the price in the next month. “Hold your shares instead of trading them frequently,” Chey advised.
The volatility stems from a single unresolved question: Can SK Hynix defend its pole position in HBM4 memory chips for Nvidia’s next-generation platform? The company’s allocation for those high-bandwidth chips — the key profit driver behind its recent surge — is still being ramped up, not locked in. Both Samsung Electronics and Micron Technology have received HBM4 certification for Nvidia’s new platform, with Samsung already pushing into mass production and Micron steadily gaining share. Estimates for SK Hynix’s slice of Nvidia’s HBM4 orders now range between 50% and 70% — a spread that the market is furiously trying to price.
The bullish camp argues that structural scarcity will keep pricing power intact. SK Hynix CEO Kwak Noh-jung has warned that 2027 could bring the worst memory shortage in industry history, with demand exceeding capacity even beyond 2030. A senior analyst at Meritz Securities notes that DRAM suppliers are currently covering only 75% to 80% of demand, a fill rate that could slip to 60% by 2027. HSBC adds that rising profitability in AI services is underwriting strong cloud investment, and points to a trend toward multi-year supply contracts lasting three to five years — deals that would make earnings forecasts far more predictable. On the technology front, SK Hynix began mass shipments of 12-layer HBM4 to Nvidia at the end of June and is now ramping production. The Nasdaq listing itself is seen as a structural re-rating catalyst: Seoul-listed shares have traded at an average 35% discount to Micron over the past 13 years, and the ADR gives institutional investors the same easy access they have for Micron or Nvidia.
Should investors sell immediately? Or is it worth buying SK Hynix?
Yet the bearish case is equally concrete. A market share above 50% makes SK Hynix a big target. Bernstein and TrendForce forecast that Samsung’s share of HBM revenue will rise from roughly 27% in 2025 to 37% in 2026, driven by its accelerating certification progress with Nvidia. Memory remains a cyclical business, and the sector dipped into bear-market territory just before the Nasdaq listing. Investors also worry that earnings growth will slow once quarterly price increases lose momentum in the second half of 2026. Technical analysts point to a 44% correction from the all-time high on the monthly chart; the stock currently sits above its 50-month and 200-month exponential moving averages, but a break of support at 1,848,000 won would open the path to the golden-ratio zone between 1,049,000 and 1,144,000 won — implying another 39% drop.
The broader sector amplified the pain. Samsung Electronics lost more than 8% on the week, Seoul Semiconductor fell 5.13%, LG Innotek gave up 2.91%, and Samsung SDI shed over 4%. The selloff was ignited by a rout in US chip stocks: Micron tumbled 8%, Intel lost over 4%. Louis Kondratev, a trader at XFUNDs, observes that semiconductor stocks now account for about 20% of the S&P 500 — more than double the 8% weight during the dot-com bubble and far above the historical 2% to 5% range. The sector, he says, is “extremely overcrowded.”
The ADR’s own trading dynamics added fuel. Thin free float, a premium to the Seoul listing, and surging demand from newly launched leveraged products — four single-stock ETFs from Direxion and GraniteShares debuted this week — turned every move into a swing. Barclays analyst Simon Coles, who initiated coverage on the ADR with a Buy rating and a $330 target (implying more than 100% upside), sees the memory shortage persisting through 2027, with supply only improving meaningfully in 2028.
SK Hynix at a turning point? This analysis reveals what investors need to know now.
The next concrete test is July 29, 2026, when SK Hynix reports second-quarter results — the first fundamental check on its valuation since the Nasdaq debut. Until then, the chairman’s message of patience may be tested repeatedly as the market weighs whether the HBM4 allocation will align with the most optimistic estimates or the more cautious ones. As long as memory suppliers continue to fall short of demand — with fill rates below 80% and heading toward 60% — the structural argument for pricing power and SK Hynix’s market position remains intact. But if Samsung and Micron convert their certification progress into market share faster than expected, or if price increases fade more quickly in the second half of 2026, the bull case will lose much of its foundation.
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SK Hynix Stock: New Analysis - 18 July
Fresh SK Hynix information released. What's the impact for investors? Our latest independent report examines recent figures and market trends.
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