SK Hynix (000660): UBS maintains Buy on SK Hynix as AI memory demand, pricing and cash returns support further recovery

Overview

UBS reviews SK Hynix after its 3Q26 APAC Tech Tour and concludes that the underlying memory upcycle remains intact despite recent share-price volatility. Strong AI-related demand, constrained industry supply, higher DRAM pricing, substantial free cash flow and increased shareholder returns underpin the maintained Buy rating and Won3,000,000 target.

Core views

SK Hynix shares had recovered 39% from their July trough but remained 36% below the June peak. UBS argues that the market is still overly cautious about the durability of AI capital spending, HBM pricing and shareholder returns. Its APAC Tech Tour found no evidence of an AI-capex slowdown even after HBM specification reductions; instead, server DDR5 and enterprise SSD demand continued to improve for 2027 onward. UBS therefore believes the shares do not fully reflect structurally higher memory profitability, stronger free-cash-flow generation or enhanced capital returns. UBS expects memory undersupply to continue into 2028. Agentic AI is expanding demand beyond HBM into DDR5 and LPDDR5 for conventional servers and AI-server CPU head nodes, as well as NAND for key-value cache and storage. It forecasts DRAM bit end-consumption growth accelerating to 40% YoY in 2027 from 21% in 2026, with NAND demand growing 24% in 2027. At the same time, almost all incremental DRAM wafer capacity is being directed toward HBM, while no new non-China NAND capacity is being added. HBM-related allocation away from conventional DDR and the use of long-term agreements should moderate future cyclical corrections and narrow profitability swings through the cycle. The principal affordability risk is that memory-industry revenue is approaching US$1.64tn in 2027E. Near-term DRAM pricing is slightly stronger than UBS previously assumed. The firm raises its 3Q26E DRAM ASP growth forecast to 23% QoQ from 20% after better DDR contract-negotiation outcomes, although some OEM negotiations remain unfinished. Its revised 3Q26E operating-profit estimate is Won83.5tn, 7% above Visible Alpha consensus. Forecasts from 2027 onward are largely unchanged, but UBS remains 18% above consensus for 2027E operating profit. Its broader estimates call for revenue of Won356.7tn in 2026E, Won600.7tn in 2027E and Won668.2tn in 2028E, with operating profit of Won281.2tn, Won499.9tn and Won540.8tn, respectively. For HBM, UBS acknowledges that SK Hynix may grant Nvidia volume discounts and share some yield-improvement benefits through contract mechanisms. However, Nvidia reduced HBM4 pin-to-pin speed requirements from 11.7Gbps to 10.6Gbps, which UBS believes should keep SK Hynix's pricing gap with Samsung limited. UBS forecasts SK Hynix's HBM ASP to rise 62% YoY in 2027E. Industry HBM capacity is estimated to reach 230,000 wafers per month by end-2026E and 270,000 by end-2027E, supporting shipments of 17.4bn Gb in 2026E, up 38%, and 20.1bn Gb in 2027E, up 15%. SK Hynix is forecast to retain the leading 2026 HBM share at 48% of industry bit shipments, then rank slightly behind Samsung in 2027 at 37%, versus Samsung at 41% and Micron at 22%. The stronger demand outlook requires more investment. UBS raises SK Hynix's capex forecast to Won63tn from Won59tn in 2027E and to Won71tn from Won63tn in 2028E. Wafer-fabrication-equipment spending is forecast at US$18bn in 2026E, up 62% YoY; US$26bn in 2027E, up 43%; and US$31bn in 2028E, up 19%. UBS expects the new Y1 fab to begin installing equipment for DRAM use in February 2027 and then equip one clean room every six months. NAND facility M17 is expected to begin receiving equipment in the second half of 2028. A possible US fab has not been finalized, although UBS regards longer-term US reshoring as making such a project possible, if not likely. Despite the increased capex, UBS forecasts free cash flow of Won186tn in 2026E, Won315tn in 2027E and Won363tn in 2028E. SK Hynix has announced a Won40tn share-buyback-and-cancellation program scheduled for completion by November 2026 and plans to return at least 50% of cumulative free cash flow during the 2025-27 policy period through buybacks and dividends. More detail is expected around the 3Q26 results, and UBS expects the company to continue returning at least 50% of free cash flow over the longer term. UBS values SK Hynix at 4.25x next-12-month P/BV, based on a 50.0% long-term ROE forecast and an 11.8% cost of equity. Following the sell-off, the shares traded at about 2.65x NTM P/BV, which UBS says discounts a long-term ROE of only 31.2%. The base price target is Won3,000,000, compared with Won1,868,000 on 21 September 2026; the report shows 60.6% forecast price appreciation, a 2.6% dividend yield and a 63.2% forecast stock return. Its valuation spectrum ranges from Won3,600,000 in the upside case to Won1,200,000 in the downside case. The ADR target rises to US$220 from US$217 to reflect the latest exchange rate.

Analysis framework

UBS begins with investor concerns identified through its APAC Tech Tour, then tests them against demand trends, capacity allocation, contract pricing and HBM market-share forecasts. It translates bit shipments and ASP assumptions into segment revenue, profit and free-cash-flow estimates, compares those estimates with Visible Alpha consensus, and applies an ROE- and cost-of-equity-based forward P/BV framework to derive the price target and scenario range.

Methodology notes

• Industry AnalysisSupply-demand framework

  Memory supply-demand balance

  UBS compares AI-led DRAM, HBM and NAND demand growth with constrained wafer-capacity additions to assess whether undersupply can persist through 2028.

• Industry AnalysisVolume-price decomposition

  Bit-shipment and ASP decomposition

  The forecasts separate shipment volumes from average selling prices for DRAM, DDR, HBM and NAND, then use those drivers to estimate segment revenue, margins and operating profit.

• Corporate Fundamentals and FinanceFree cash flow analysis

  Free cash flow after capacity investment

  UBS assesses whether operating cash generation can fund rising capex while still supporting buybacks and dividends, forecasting free cash flow through 2030.

• Valuation methodsPB valuation

  Forward P/BV based on long-term ROE and cost of equity

  UBS applies a 4.25x next-12-month P/BV multiple derived from a 50.0% long-term ROE forecast and an 11.8% cost of equity, while comparing this with the lower ROE implied by the market valuation.

• Event-Driven and Behavioral FinanceEvent-driven analysis

  3Q26 results catalyst assessment

  The report identifies the approximate 22 October 2026 results period as a positive catalyst for greater end-demand visibility, shareholder-return details and potential memory-pricing upside.

Asset mapping & comparison

Structured mapping from thesis to named assets (strengths, weaknesses, peers, risks).

• SK Hynix (000660.KS; ADR: SKHY.O)

  Primary covered company and expected beneficiary of AI-driven DRAM, HBM and NAND demand.

  Strengths

  Leading HBM supplier, strong DRAM profitability, forecast free-cash-flow generation and a commitment to return at least 50% of cumulative FCF during 2025-27.

  Weaknesses

  Capital intensity, commodity-cycle exposure and a forecast decline in HBM market share from 48% in 2026E to 37% in 2027E.

  Comparison

  UBS expects SK Hynix to lead HBM bit shipments in 2026 but trail Samsung in 2027, while remaining ahead of Micron.

  Risks

  Memory affordability, rapid contract-price changes, end-demand sensitivity and the possibility that capital spending rises faster than expected.

• NVIDIA (NVDA.US)

  Major HBM customer whose specifications and volume negotiations affect SK Hynix's HBM pricing.

  Strengths

  Its AI platforms support HBM demand.

  Weaknesses

  Its purchasing scale may enable volume discounts and sharing of supplier yield benefits.

• Samsung

  HBM competitor used in UBS's 2027 market-share comparison.

  Strengths

  Forecast to hold 41% of 2027E industry HBM bit shipments.

  Comparison

  Forecast to rank ahead of SK Hynix's 37% share in 2027E.

• Micron

  HBM competitor used in UBS's industry-share analysis.

  Strengths

  Forecast to participate in continued HBM market growth.

  Comparison

  Forecast at 22% of 2027E HBM industry bit shipments versus 37% for SK Hynix and 41% for Samsung.

Key data

• 12-month ratingBuyMaintained by UBS
• Price targetWon3,000,000Versus Won1,868,000 on 21 Sep 2026
• Forecast stock return63.2%Comprises 60.6% forecast price appreciation and 2.6% forecast dividend yield
• 3Q26E DRAM ASP growth23% QoQRaised from 20%
• 3Q26E operating profitWon83.5tn7% above Visible Alpha consensus
• 2027E DRAM bit-consumption growth40% YoYAccelerating from 21% in 2026
• 2027E NAND demand growth24%Supported by AI-related cache and storage demand
• 2027E SK Hynix HBM ASP growth62% YoYDespite potential Nvidia volume discounts
• HBM industry shipments17.4bn Gb in 2026E; 20.1bn Gb in 2027EUp 38% and 15% YoY, respectively
• SK Hynix HBM market share48% in 2026E; 37% in 2027EForecast to lead in 2026, then trail Samsung's 41% in 2027
• Capex forecastWon63tn in 2027E; Won71tn in 2028ERaised from Won59tn and Won63tn
• WFE spendingUS$18bn/US$26bn/US$31bn in 2026E/2027E/2028EGrowth of 62%/43%/19% YoY
• Free cash flowWon186tn/Won315tn/Won363tn in 2026E/2027E/2028EForecast despite rising capex
• Shareholder-return floorAt least 50% of cumulative FCFApplies to the 2025-27 policy period, with UBS expecting the floor to continue longer term
• Valuation framework4.25x NTM P/BVBased on 50.0% long-term ROE and 11.8% cost of equity

Impact & implications

UBS believes AI is broadening the memory upcycle beyond HBM, while constrained conventional-memory capacity should support pricing and reduce the severity of future corrections. For SK Hynix, this supports high profitability and free cash flow even after larger capacity spending, leaving room for substantial shareholder distributions. UBS argues that the current valuation embeds a much lower long-term ROE than its own forecast.

Risks

• Memory affordability could constrain demand as industry revenue approaches US$1.64tn in 2027E.
• DRAM and NAND retain commodity-like characteristics, so cyclical corrections can still occur despite improved industry structure.
• Demand and product mix remain sensitive to smartphones, tablets and, to a lesser extent, enterprise spending.
• The industry is capital-intensive, and contract prices negotiated every two weeks to three months can cause cash flow to change quickly.
• Longer-term technological shifts could require new memory technologies to supplement or replace current silicon-based Flash and RAM structures.
• SK Hynix may provide Nvidia with HBM volume discounts and share some benefits from yield improvements.

What to watch

• The approximate 22 October 2026 catalyst for improved visibility into end demand, shareholder returns and memory pricing.
• Details of the next shareholder-return measures expected around the 3Q26 conference call.
• The outcome of ongoing OEM DDR contract negotiations.
• Execution of the Won40tn buyback-and-cancellation program by November 2026.
• Y1 fab equipment installation beginning in February 2027 and the pace of subsequent clean-room additions.
• Any final decision on a possible US fabrication plant.