Key Takeaways
Ahead of SK Hynix's Q2 earnings release on the 29th, brokerages have set an unusually high bar: operating profit of 64 trillion won and an operating margin above 75%. What matters more than the headline number is where that margin is actually coming from — it signals that HBM (High Bandwidth Memory) pricing and product mix are now driving the direction of earnings, which in turn raises the question of whether next quarter's yields and customer orders can sustain today's valuation.
What Happened
SK Hynix (000660) will announce its Q2 earnings on July 29. The brokerage industry expects expanding AI server investment to push both DRAM and NAND prices higher simultaneously, driving what could be a record-breaking earnings quarter. Two figures are drawing market attention: operating profit of 64 trillion won, and an operating margin above 75%. Given that memory chipmakers typically see operating margins swing between 30% and 40% across boom-and-bust cycles, a 75% figure should be read not as a sign of a general-purpose DRAM/NAND upcycle, but as evidence that HBM — a high-value-added product — is now lifting the entire income statement.
Layered on top of an expanding net cash position and forecasts of record-high employee bonuses, retail investors have flooded online communities with questions about whether to buy into SK Hynix (000660) come Monday. But answering that question requires looking past the earnings release itself and toward the second-half capex guidance and HBM4 mass-production commentary expected on the post-earnings conference call.
Background and Context
The HBM market has gone through three distinct phases of realignment over the past two years. At the materials stage, wafer supply capable of handling the TSV (Through-Silicon Via) process became the bottleneck. At the equipment stage, competition intensified over securing bonding equipment. At the finished-product stage, 12-layer HBM3E — tailored to Nvidia's GPU roadmap — became the de facto standard, and SK Hynix enjoyed a first-mover advantage. The problem is that this advantage won't last forever. Both Samsung Electronics (005930) and Micron are ramping up yields on their 12-layer products, and as competitors' yields improve, the pricing premium SK Hynix currently commands is bound to narrow.
Market and Stock Impact
- SK Hynix (000660): Improving HBM pricing and mix is the core earnings driver. If the 64-trillion-won operating profit estimate materializes, it would add pressure for a valuation re-rating — though it's worth noting that consensus has already priced in much of this.
- Samsung Electronics (005930): In a market where foundry and memory competition run in parallel, whether Samsung secures adequate HBM4 yields will determine the semiconductor earnings gap in the second half. SK Hynix's earnings surprise could paradoxically heighten market impatience over how fast Samsung is catching up.
- Hanmi Semiconductor: As a key supplier of TC bonders (thermo-compression bonding equipment) for HBM, its earnings are directly tied to SK Hynix's capacity-expansion and yield-improvement order cycle.
- Back-end and materials partners (TSV and bumping-related firms): As HBM production capacity keeps expanding, the extent of the benefit will vary depending on how back-end process volume is allocated.
- Memory customers such as smartphone and PC set makers: If price strength persists, the lag before it passes through as a cost burden could weigh on set makers' margins in the second half.
Investor Checkpoints
- Second-half capex guidance and commentary on 12-layer HBM4 mass-production yields expected on the July 29 earnings conference call
- The gap between the 75%-plus operating margin estimate and the actual reported figure — this gap will determine the stock's near-term direction
- The pace of yield improvement on Samsung Electronics' and Micron's competing HBM products, and the timing of their customer qualification passes
- Spot price trends for general-purpose DRAM and NAND — the profit contribution from non-HBM segments will determine the sustainability of earnings
Outlook
The bullish scenario is clear-cut. If AI server investment continues longer than expected and HBM4 yields climb steadily, SK Hynix could sustain its current margin for several more quarters. An expanding net cash position also increases capacity for dividends and share buybacks. But the bearish scenario can't be dismissed either. A 75% margin is historically unprecedented for the industry, meaning mean-reversion pressure is ever-present. If competitors' yield catch-up accelerates faster than expected, or if the AI server investment cycle sees a temporary pullback, today's valuation could adjust quickly. In the end, what matters isn't the 64-trillion-won figure itself, but how many more quarters that margin can be sustained.
SK Hynix in Real-Time Data
SK Hynix (000660)'s most recent closing price was 1,759,000 won (-8.34% from the previous session), and the signal combining foreign investor/institutional investor supply-demand (order flow) with news and momentum reads 🔴 Caution. Foreign investors, institutional investors, and momentum are all negative, warranting caution at this time.
- ▼ Dual-side selling — Foreign investors net -1.7533 trillion won · institutional investors net -867.4 billion won, selling in tandem
- ▼ Trend alignment — Short- and medium-term downtrend aligned (same-day -8.3% · 1-week -4.5% · 1-month -32.9%)
- ▲ News flow — 7 positive catalysts vs. 4 negative catalysts — positive catalysts prevail
Recent related news skews favorable, with 7 positive catalysts versus 4 negative catalysts.
※ Price and foreign/institutional investor supply-demand (order flow) data are provided by Korea Investment & Securities (KIS) and reflect the time of publication.
This article was automatically summarized and analyzed based on the original news report. View Original (Maeil Business Newspaper - Securities)
