South Korea semiconductor equipment imports: South Korean semiconductor-equipment imports rose 87% YoY in August, pointing to continued memory-capex momentum.

Overview

Bernstein uses South Korean customs data as a near-term indicator for semiconductor-equipment demand, supplier revenue and Korean memory-fab capital spending. The August data support its view of sustained momentum in memory investment, particularly from DRAM capacity expansion and adoption of the more lithography-intensive 1c node.

Core views

South Korean semiconductor-equipment imports reached $3.4bn in August, up 87% year on year but down 3% month on month. Year-to-date growth improved to 45% from 41% in July. Imports of Japanese semiconductor equipment rose 97% YoY and 9% MoM; the relevant Japanese WFE categories for Tokyo Electron were up 113% YoY and 9% MoM. Bernstein interprets the data as evidence that Korean semiconductor capital spending remains strong despite monthly volatility. The report links equipment imports to the combined capital expenditure of Samsung Electronics and SK hynix. Imports increased further in 2QCY26 versus 1QCY26, alongside a quarter-on-quarter capex rebound reported by both companies. Bernstein notes that 1Q capex had fallen sequentially despite rising imports, likely because of seasonality and infrastructure spending brought forward into 4Q25. Looking ahead, SK hynix has guided for approximately 75% growth in 2026 capex, and Bernstein expects similar growth from Samsung. The institution expects capex and imports to continue growing, with spending tilted toward infrastructure and strategic equipment as fab-construction schedules accelerate. For Advantest, Korean tester imports from Japan and Malaysia fell 27% MoM but rose 79% YoY; the three-month average increased 2% MoM. Bernstein finds that these imports correlate with Advantest’s Korean memory-tester revenue. Its regression using two months of import data indicates Korean sales of JPY85bn in SepQ, up 26% QoQ from JPY67bn, compared with an 18% QoQ consensus expectation for Advantest’s total revenue. Bernstein therefore sees the Korean import signal as indicating potential upside to consensus. For Tokyo Electron, Bernstein aggregates import categories including CVD, dry etching, cleaning, coater and developer, and RTP equipment, which it says correlate with TEL’s Korean revenue. The regression points to Korean sales of JPY187bn in SepQ, up 22% QoQ from JPY152bn. This implies total sales of JPY876bn in Bernstein’s estimate, compared with JPY851bn consensus, where both estimates indicate growth above the prior quarter but Bernstein’s Korean-data signal is modestly stronger than consensus’s 18% QoQ growth expectation. For ASML, South Korean WFE imports from the Netherlands were €708mn in August, down 3% MoM but up 108% YoY. ASML-related imports totaled about €5.0bn in 2024, €6.3bn in 2025 and €6.85bn year to date in 2026, up about 80% YoY. Bernstein’s regression uses the first two months of current-quarter imports plus the preceding month’s imports; it reports an R² of about 84%. The model estimates ASML Korea Q3 system sales of approximately €2.11bn, down 25% QoQ from a record Q2 but more than doubling YoY. Korea would represent roughly 24% of ASML’s Q3 system sales, down about 19 percentage points sequentially. Bernstein attributes the still-strong year-on-year momentum to DRAM capacity expansion and rapid adoption of the 1c node, which carries materially higher lithography intensity.

Analysis framework

Bernstein analyzes Korea Customs Service import data by equipment type and origin, compares it with historical supplier Korean revenue and Samsung/SK hynix capital expenditure, and applies regression models to estimate current-quarter Korean sales. It then compares the resulting supplier-growth indications with consensus revenue expectations.

Methodology notes

• Industry AnalysisUpstream-Midstream-Downstream Transmission

  Korean equipment-import data is used as a leading operating indicator for memory-fab capex and equipment-supplier revenue.

  The report traces import demand through Korean semiconductor manufacturing investment to expected sales for equipment suppliers.

• Other

  Regression analysis of Korean import data against supplier Korean revenue.

  Bernstein uses historical correlations and regressions, including a one-month lag for ASML, to estimate quarterly Korean sales; the ASML model reports an R² of approximately 84%.

• Valuation methodsP/E and PEG Valuation

  Forward P/E valuation of covered companies.

  The disclosure appendix sets target prices using forward 5Q–8Q EPS estimates and P/E multiples, including 40x for Advantest and ASML, 28x for Tokyo Electron, and 6.2x for Samsung and SK hynix.

Asset mapping & comparison

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

• Advantest (6857.JP)

  Korean tester-import data is used as an indicator of Korean memory-tester revenue.

  Strengths

  Regression implies 26% QoQ Korean-sales growth, above the 18% QoQ consensus expectation for total revenue.

  Weaknesses

  August tester imports declined 27% MoM.

  Comparison

  Bernstein’s total-sales estimate is JPY441bn versus JPY433bn consensus.

  Risks

  AI-related GPU and HBM demand fluctuations, competitive changes and exchange-rate movements.

• Tokyo Electron (8035.JP)

  Imports of TEL-relevant WFE categories are used to estimate Korean revenue.

  Strengths

  Regression implies 22% QoQ Korean-sales growth.

  Comparison

  Bernstein estimates JPY876bn total sales versus JPY851bn consensus; consensus expects 18% QoQ growth.

  Risks

  Unfavorable US trade restrictions, weaker global logic or memory demand affecting capex, and exchange-rate movements.

• ASML (ASML)

  Dutch WFE imports into South Korea are used to estimate Korean system sales.

  Strengths

  Korean Q3 system sales are estimated at €2.11bn, more than doubling YoY, supported by DRAM expansion and 1c-node adoption.

  Weaknesses

  Estimated Korean sales decline 25% QoQ from a record Q2; Korea’s system-sales share is projected to fall about 19 percentage points sequentially.

  Comparison

  Bernstein estimates total system sales of €8.839bn versus €8.809bn consensus.

  Risks

  Lower-than-expected margins from EUV commercialization, China overstocking, weaker WFE demand, slower technology migration, competing technologies and tighter China export controls.

• Samsung Electronics (005930.KS, 005935.KS)

  A major Korean memory maker whose capex is correlated with equipment-import data.

  Strengths

  Reported a notable QoQ capex rebound in 2QCY26; Bernstein expects capex growth similar to SK hynix’s guided growth.

  Comparison

  Combined Samsung and SK hynix capex has historically shown directional correlation with Korean equipment imports.

  Risks

  An earlier end to favorable memory pricing due to weaker demand or higher supply, investor sentiment and China’s memory progress, especially in NAND.

• SK hynix (000660.KS)

  A major Korean memory maker whose capex is correlated with equipment-import data.

  Strengths

  Guided for approximately 75% growth in 2026 capex and reported a notable QoQ capex rebound in 2QCY26.

  Comparison

  Combined Samsung and SK hynix capex has historically shown directional correlation with Korean equipment imports.

  Risks

  An earlier end to favorable memory pricing due to weaker demand or higher supply, investor sentiment and China’s memory progress, especially in NAND.

Key data

• South Korea semiconductor-equipment imports, August$3.4bnUp 87% YoY and down 3% MoM; year-to-date YoY growth improved to 45% from 41% in July.
• Japanese semiconductor-equipment imports to South Korea, August$755mnUp 97% YoY and 9% MoM.
• Advantest estimated Korean salesJPY85bnBernstein regression implies 26% QoQ growth in SepQ, versus JPY67bn in the prior quarter.
• Tokyo Electron estimated Korean salesJPY187bnBernstein regression implies 22% QoQ growth in SepQ, versus JPY152bn in the prior quarter.
• ASML Korea Q3 system sales estimate€2.11bnDown 25% QoQ but more than doubling YoY; estimated at roughly 24% of total Q3 system sales.
• ASML regression explanatory powerR² of approximately 84%Model uses current two-month imports plus a one-month import lag.
• SK hynix 2026 capex guidance~75% growthBernstein expects similar capex growth from Samsung.

Impact & implications

Bernstein concludes that Korean import data supports continuing revenue momentum for memory-exposed equipment suppliers and ongoing capital-spending strength at Samsung and SK hynix. The import-based estimates indicate possible upside to consensus revenue growth expectations for Advantest and Tokyo Electron, while ASML’s Korean sales remain robust year on year despite a high comparison base and sequential normalization.

Risks

• For Advantest, AI-related GPU and HBM demand fluctuations could affect both earnings power and valuation, alongside competitive and foreign-exchange risks.
• For ASML, risks include EUV commercialization costs and margins, China overstocking, weaker WFE demand, slower technology migration, competing technologies and tighter China export controls.
• For Tokyo Electron, unfavorable US trade restrictions, slower global logic or memory demand and adverse exchange-rate movements could pressure capex and revenue.
• For Samsung and SK hynix, weaker demand or greater supply could end favorable memory pricing earlier than expected; China’s memory progress is also a downside risk.

What to watch

• Monthly South Korean semiconductor-equipment imports, including Japanese WFE categories, tester imports and Dutch lithography equipment imports.
• Samsung and SK hynix capex trends, fab-construction timing and SK hynix’s approximately 75% 2026 capex-growth guidance.
• DRAM capacity expansion and adoption of the 1c node, which Bernstein identifies as increasing lithography intensity.
• Advantest, Tokyo Electron and ASML quarterly Korean sales relative to Bernstein’s import-based estimates and market consensus.