SK Hynix: Complete Analysis
KOSPI #1 · Nasdaq ADR · HBM Dominance — Everything Korean Investors Need to Know
① Introduction — A Historic Market Cap Overturn
On June 22, 2026, South Korean stock market history changed. SK Hynix (000660) surpassed Samsung Electronics in market capitalization to become the top stock on the KOSPI — the first time Samsung has relinquished the top spot in 25 years and 7 months, since November 2000.
SK Hynix shares closed up 5.61% at ₩2,919,000, pushing its market cap to approximately ₩213 trillion. In global terms, SK Hynix's market cap stands at roughly $1.35 trillion, ranking it 13th in the world. The driving force is clear: AI — specifically the near-exclusive supply of High Bandwidth Memory (HBM) to NVIDIA, which has pushed the stock up more than 2.6x over the past two years.
② Q1 2026 Results — Every Record Broken
SK Hynix's Q1 2026 results rewrote semiconductor history.
| Metric | Q1 2026 | Q1 2025 | YoY |
|---|---|---|---|
| Revenue | ₩52.58T (~$35.0B) | ₩17.61T | +198% |
| Operating Profit | ₩37.61T (~$25.1B) | ₩2.87T | +1,211% |
| OP Margin | 72% | 16% | +56pp |
| Net Income | ₩40.34T | ₩1.32T | +2,960% |
| EPS | ₩57,228 | ₩11,755 | +387% |
This marked the first time quarterly revenue surpassed ₩50 trillion. HBM revenue to NVIDIA alone reached ₩7.78T ($5.2B), up 62.6% year-over-year. An undisclosed big-tech customer added ₩6.54T ($4.4B), representing 12.4% of total revenue — a sign of meaningful customer diversification.
③ HBM — The Key to AI Memory Dominance
HBM (High Bandwidth Memory) is the critical component in AI servers. Stacked in 3D next to GPUs, it enables the ultra-fast data transfer that powers NVIDIA H100, H200, and B200 AI accelerators. Without HBM, modern AI infrastructure simply cannot function.
| Gen | Product | SK Hynix Position | Notes |
|---|---|---|---|
| 4th | HBM3 | #1, near-exclusive | Powers NVIDIA H100 |
| 5th | HBM3E | #1 · 58% share | H200/B200 flagship; sold out 2026 |
| 6th | HBM4 | Mass production Feb 2026 | Samsung & Micron entering 2026 |
| 7th | HBM4E | In development | Expected 2027–2028 |
Goldman Sachs projected that "SK Hynix will maintain over 50% total HBM market share through at least 2026." The global HBM TAM is expected to reach $100B by 2028, with supply sold out through 2027–2028.
④ Memory Semiconductor Industry Structure
The memory semiconductor market splits into three key segments:
| Segment | Key Uses | SK Hynix Position | 2026 Outlook |
|---|---|---|---|
| DRAM | AI servers, PCs, mobile | Global #2 (~30%) | AI demand sustains price strength |
| HBM | AI GPU-dedicated | Global #1 (58%) | Sold out to 2027; $100B TAM by 2028 |
| NAND | SSDs, smartphones | Global #3–4 | Supply glut easing; recovery phase |
The total DRAM market is forecast to approach $400B by 2027. On the supply side, the "Big 3" — SK Hynix, Samsung, and Micron — control over 95% of the market, sustaining an oligopolistic structure. China's CXMT is gaining ground in commodity DRAM, but the HBM technology gap remains 3–4 years wide. Hyperscaler capex (Microsoft, Google, Amazon, Meta) is tracking 40–60% year-over-year growth in 2026, underpinning structural HBM demand through at least 2028–2030.
⑤ Nasdaq ADR Listing — Full Breakdown
SK Hynix's Nasdaq ADR (American Depositary Receipt) listing is expected as early as July 2026, with August as a likely backstop. The company filed confidentially with the SEC in March 2026 and has completed a Non-Deal Roadshow (NDR) with global institutional investors.
| Item | Details |
|---|---|
| Exchange | Nasdaq |
| Structure | Level III ADR (new share issuance) |
| Target Raise | Up to ₩40T (~$27B) |
| Dilution | ~2.5% of total shares outstanding |
| Proceeds Use | Yongin semiconductor cluster investment |
| SEC Approval | Expected around June 22, 2026 |
| ADR Price | To be set just before debut |
The core significance is valuation re-rating. SK Hynix currently trades at ~5–6x P/E, versus comparable Micron (MU) at ~10–12x. Direct ADR access for global investors could close this "Korea Discount."
⑥ Competitive Landscape — vs. Samsung & Micron
| Metric | SK Hynix | Samsung | Micron (MU) |
|---|---|---|---|
| HBM Share | 58% | ~30% | ~12% |
| HBM Generation | HBM3E → HBM4 | HBM3E recovery | HBM3E · HBM4 entering |
| NVIDIA Relationship | Primary supplier | Pursuing 2nd supplier | Supplying |
| 2026 OP Margin | ~72% | Semi. losses ongoing | ~35% |
| US Listing | ADR July–Aug 2026 | OTC only | Nasdaq (MU) |
| Valuation (P/E) | ~6x | ~15x | ~11x |
⑦ Key Risks
| Risk | Description | Severity |
|---|---|---|
| Supply Glut Transition | HBM supply normalization in 2027–2028 could trigger price declines | ⭐⭐⭐⭐ |
| Samsung HBM4 Comeback | Samsung recovering market share in HBM4 could erode SK's dominance | ⭐⭐⭐⭐ |
| China Export Controls | US tightening of semiconductor export restrictions | ⭐⭐⭐ |
| Currency Risk | KRW strength reduces USD-denominated returns on ADR | ⭐⭐⭐ |
| ADR Dilution | ~2.5% dilution from new share issuance | ⭐⭐ |
| Capex Burden | ₩600T Yongin cluster is a long-duration capital commitment | ⭐⭐⭐ |
⑧ Investment Checklist for Korean Investors in US Markets
- ✅ ADR Listing Date — Trading on Nasdaq expected to begin July–August post SEC approval. Expect elevated volatility at debut.
- ✅ HBM4 Supply Contract — Monitor for official announcement of HBM4 supply to NVIDIA's next-gen Blackwell Ultra.
- ✅ Samsung HBM3E Certification — If Samsung officially becomes NVIDIA's 2nd HBM supplier, SK's share concentration risk decreases.
- ✅ Q2 2026 Earnings (July) — Watch for guidance reaffirmation of ~₩270T annual operating profit.
- ✅ Yongin Cluster Progress — Domestic policy support and construction timeline affect long-term investor sentiment.
- ✅ USD/KRW Rate — For ADR investors: KRW weakness is favorable; KRW strength reduces USD-denominated returns.
SK Hynix claiming the KOSPI #1 spot is more than a rankings change — it is the market's formal recognition of a structural AI beneficiary that has been building its lead for years.
That said, a ~6x P/E may look like a bargain, but it also reflects the market's preemptive pricing of a post-2027 supply glut. The ADR listing could close some of the Korea Discount as global capital gains direct access, but the timing of Samsung's HBM4 comeback and Micron's capacity ramp will define the competitive ceiling.
Don't let short-term events (ADR debut, Q2 earnings) distort your thesis. The long-term signal to watch is whether SK Hynix maintains its exclusive supply relationship with NVIDIA into the HBM4 and HBM4E generations.
[Stance: Neutral — structural growth story, but monitor 2027 supply risk in parallel]
- SK hynix — Q1 2026 Financial Results (Apr 23, 2026)
- CNBC — SK Hynix files confidentially for U.S. listing (Mar 25, 2026)
- KED Global — SK Hynix to list ADRs as early as July (Jun 16, 2026)
- 머니투데이 — SK하이닉스, 삼성전자 제치고 시총 1위 (2026-06-22)
- TrendForce — Samsung, SK Hynix Plan ~20% HBM3E Price Hike for 2026
- BigGo Finance — SK Hynix's Nvidia Revenue Tops $5.2 Billion (Q1 2026)
※ This report is provided for informational and educational purposes only and does not constitute a recommendation to buy or sell any security.
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