KRX:000660 - SK Hynix Inc
Executive Summary
SK Hynix Inc (KRX:000660) is a South Korean semiconductor manufacturer specialising in dynamic random-access memory (DRAM), NAND flash and, increasingly, high-bandwidth memory (HBM) products used in artificial intelligence (AI) accelerators and data centre systems. The group ranks among the world's leading memory chip producers, with a particularly strong position in advanced HBM generations that are integral to AI training and inference hardware.
The investment case rests on continued HBM share gains, pricing power in advanced memory, and the conversion of those advantages into record profitability already evident in reported results. The key near-term catalyst is the next quarterly earnings release, scheduled for 29 July 2026, which should confirm whether the HBM-led margin expansion is being sustained into the second half of the year. The primary risk is a moderation in AI-driven memory demand that would compress average selling prices (ASPs) and erode the earnings momentum currently underpinning the rating.
BUY. Conviction Score: 77/100. The view would change if upcoming quarterly results showed a clear deceleration in HBM revenue growth, a sudden customer concentration loss, or a material downturn in memory pricing that broke the AI-driven margin trajectory.
Business Model
SK Hynix generates revenue predominantly through the design, fabrication and sale of memory semiconductors - principally DRAM (including high-bandwidth memory), NAND flash, and system semiconductors such as CMOS image sensors. Within DRAM, the strategic focus has shifted towards higher-value HBM products, including HBM3E and successor generations, which command materially higher ASPs per bit than conventional DRAM and are now central to AI accelerator builds. NAND revenue is generated across enterprise solid-state drives, client SSDs, and mobile embedded solutions.
The customer base is concentrated among a small number of global technology platforms - large cloud service providers, AI accelerator vendors and major system OEMs - which use SK Hynix memory inside data centre servers, graphics processing unit (GPU) accelerators, and consumer devices. As reported on the Quartr investor relations summary for the quarter ending 31 March 2026, the company carried retained earnings of approximately ?52.58 trillion, reflecting the cumulative effect of a sharp earnings upcycle.
The competitive moat is built on process leadership in advanced DRAM nodes, an early position in HBM qualification with leading AI customers, and the capital intensity required to compete at the leading edge - factors that have allowed SK Hynix to outpace Korean competitor Samsung Memory in HBM qualification cycles. Reported trailing-twelve-month earnings of US$68.72 billion (as of June 2026) illustrate the scale of revenue conversion now being achieved, with margin expansion driven by product mix shift rather than purely by volume.
Financial Snapshot
Recent Catalysts
[June 2026] - Quartr's SK Hynix investor relations summary dated 23 June 2026 reported record quarterly profit and revenue driven by AI memory and premium product sales, with management reaffirming a strong forward outlook. Source: Quartr (SK Hynix Inc investor relations summary).
[31 March 2026] - Company filings referenced on StockInvest.us showed retained earnings of ?52.58 trillion at the end of the latest reported quarter (Q1 2026), reflecting the cumulative impact of the recent earnings upcycle. Source: StockInvest.us earnings report summary (referencing company filings).
[2 July 2026] - Yahoo Finance recorded trailing total returns data for SK Hynix (000660.KS) as of 2 July 2026, including any dividends or distributions paid, confirming the equity remained actively traded and within its 52-week range. Source: Yahoo Finance (SK Hynix Inc 000660.KS quote page).
[29 July 2026] - The next scheduled earnings release for SK Hynix is set for 29 July 2026, per Investing.com's earnings calendar and TradingView's event feed. Source: Investing.com and TradingView earnings calendar entries.
[1 July 2026] - Morningstar published an analyst note dated 1 July 2026 referencing Korean government developments of 29 June 2026 and a revision to the analyst view on 000660. Source: Morningstar analyst note on 000660.
Thesis Evaluation
Bull Case (47% weight)
HBM3E and successor-generation HBM shipments scale through 2026 as SK Hynix retains qualification with leading AI accelerator customers, ASP per bit continues to expand, and operating margins reach new record highs. Earnings surprise to the upside in the 29 July 2026 print and follow-on quarters drives a re-rating of the P/E from the current 16.26 towards the high-teens. Bull-case price target: KRW 2,400,000 within twelve months.
Base Case (48% weight)
Revenue and earnings continue to grow but at a moderating pace as memory pricing normalises from peak ASPs, with HBM still contributing the majority of incremental profit. Operating margins stay elevated but begin to plateau, and the shares trade broadly sideways with modest re-rating. Base-case price target: KRW 2,000,000 within twelve months.
Bear Case (5% weight)
AI infrastructure spend slows materially, HBM ASPs erode, and a major customer reduces HBM allocation or qualifies an alternative supplier more aggressively than expected. Margins compress sharply and the P/E de-rates as growth expectations reset. Bear-case price target: KRW 1,300,000 within twelve months.
Key Risks
- AI memory demand moderation: A slowdown in data centre and AI accelerator build-outs would compress HBM ASPs and reverse the current margin trajectory. Estimated probability: 30%. Impact: severe.
- Customer concentration loss: Loss of a named leading AI customer to a competing memory supplier would directly impair HBM revenue and remove a key pillar of the bull case. Estimated probability: 15%. Impact: severe.
- Memory pricing cycle reversal: A traditional memory downcycle - driven by supply additions or weaker end-demand - would compress blended DRAM and NAND margins. Estimated probability: 35%. Impact: moderate.
- Geopolitical and export control risk: South Korea-headquartered production and exposure to US-China technology controls create supply and demand uncertainty around advanced memory. Estimated probability: 25%. Impact: moderate.
- Capital intensity and execution risk: Aggressive capacity expansion for HBM and advanced DRAM requires substantial capex; execution slippage on node transitions would weigh on returns. Estimated probability: 25%. Impact: moderate.
Who Should Own It / Avoid It
Ideal for: long-term growth-oriented investors with a minimum holding period of twelve to twenty-four months and a high tolerance for cyclical semiconductor volatility, who want concentrated AI-infrastructure exposure expressed through a memory leader with established HBM qualifications and improving return profile.
Avoid if: investors with a low tolerance for cyclical earnings swings, those unable to withstand sharp drawdowns that memory equities historically experience in down-cycles, or anyone requiring near-term income from the holding given that the investment case is oriented around capital appreciation rather than current dividend yield.
Recommendation
BUY - 77/100. This rating reflects the combination of confirmed HBM leadership, recent record profitability, and a forward earnings catalyst on 29 July 2026, partially offset by the absence of incremental hard catalysts beyond the existing customer relationships and the inherent cyclicality of memory pricing. The call would be upgraded towards a higher conviction tier if the next quarterly print confirmed sustained HBM ASP expansion, or if a new named long-term customer agreement were announced. The call would be downgraded if memory ASPs deteriorated meaningfully, if a leading AI customer publicly diversified HBM sourcing away from SK Hynix, or if HBM revenue growth decelerated sharply across consecutive quarters. At the current price of KRW1718000.00 the shares trade above our buy ceiling of KRW1533333.33: the thesis is credible but the price is not - new positions only below that level.
The probability-weighted value across our three scenarios is KRW2153000.00, 25% above the current price of KRW1718000.00 - the market has not yet priced our probability-weighted view. Levels below are derived from the scenario targets and probabilities above, not from percentage offsets to today's price.
below KRW1533333.33 - below this level the upside to the base-case target (KRW2000000.00) is at least 2x the downside to the bear case (KRW1300000.00), the minimum risk/reward we require before committing new capital.
between KRW1533333.33 and KRW2000000.00 - the base case is not yet fully priced, so existing holders are paid to wait, but new money gets no margin of safety in this zone.
above KRW2000000.00 - at this level the base case is fully reflected in the price and anything beyond it is paying for a bull scenario we weight at 47%.
if A named leading AI customer materially diversifying HBM sourcing away from SK Hynix, or two consecutive quarters showing HBM revenue growth below low double digits year on year, would invalidate the investment thesis, regardless of price - the bear target of KRW1300000.00 is the backstop, not an arbitrary percentage stop.
Conviction Trend
Latest conviction: 77/100. Trend versus prior report: Down.
| Report date | Conviction |
|---|---|
| 2026-08-01 | 29 |
| 2026-07-25 | 64 |
Sources
Market data: DYOR HQ proprietary market data workflow.
Public sentiment and news flow: Public news flow and analyst commentary drawn from investor relations aggregators (Quartr), financial data platforms (Yahoo Finance, Investing.com, TradingView, CompaniesMarketCap), earnings tracking services (StockInvest.us), and equity research commentary (Morningstar).
Primary source types: Company investor relations materials, earnings releases and supporting analyst commentary, regulatory filings referenced by third-party data services, and publicly listed earnings calendars and exchange data.
Key sources
- SK Hynix Inc (000660) Earnings Date & Report - Investing.com
- SK hynix (000660) Investor Relations, Earnings Summary & Outlook
- SK hynix Inc. (000660.KS) Stock Price, News, Quote & History
- South Korea's SK Hynix launches $28 billion US listing to ride global ...
- SK hynix (KRX:000660) Stock Price & Overview
- SK hynix Inc. Price: Quote, Forecast, Charts & News (000660.KS)
- SK Hynix Stock Nasdaq Debut: HBM, Nvidia & the Bull Case
- Nvidia clinches deals with South Korean giants including SK Group ...
- SK Hynix shares surge 11% after fundraising announcement
- Intel Is in Talks to Buy GlobalFoundries for About $30 Billion - WSJ
Data correct as of 2026-08-01.