U.S. institutional investors remain focused on Japanese semiconductor materials, while the petrochemical chain is affected by Middle East and naphtha disruptions

Overview

This report is Morgan Stanley's research on Japan's chemicals industry, based on feedback from visits with U.S. institutional investors from April 13 to 16, 2026. Against the backdrop of a rebound in the Japanese stock market, testing recent highs, and changes in the Middle East situation, the report discusses how investors are selecting stocks within Japan's chemicals sector. Core focuses include semiconductor-related materials, 300mm wafer supply and demand, PVC prices, disruptions in naphtha procurement, and the medium-term earnings outlook for petrochemical and fine chemical companies.

Core views

The report's core judgment is that semiconductor-related materials remain the main focus of institutional investors, but divergences at the individual stock level are pronounced. The 300mm wafer shortage thesis for Sumco is constrained by elevated customer inventories; Shin-Etsu Chemical simultaneously has positive factors including medium-term improvement in PVC and steady wafer growth, while also facing concerns that PVC prices may adjust after easing Middle East tensions. Short-term variables in the petrochemical chain are concentrated in difficulties in procuring naphtha and feedstock-side disruptions, and investors are also watching whether parent-subsidiary dual-listing structures may be adjusted.

Analysis framework

The report combines feedback from institutional investor meetings with discussion of industry fundamentals, mapping the questions and divergences raised by U.S. institutional investors during the visits to various subsegments and stocks within Japan's chemicals sector, including electronic chemicals, petrochemical majors, and fine chemicals. The analytical focus is not a single earnings model, but rather identifying stock-selection clues from investor attention, supply-demand expectations, cost and feedstock risks, geopolitical effects, and corporate governance events.

Methodology notes

• Investor feedbackInstitutional visit feedback framework

  Identify the current stock-selection factors attracting market attention in Japan's chemicals sector through discussion topics from visits with U.S. institutional investors from April 13 to 16.

  The report summarizes investor questions and divergences into themes such as semiconductor materials demand, customer inventories, PVC prices, naphtha procurement, dual listings, and the medium-term earnings outlook.

• Industry ratingMorgan Stanley Industry View

  Attractive, In-Line, and Cautious are used to express a judgment on 12-18 month performance relative to the broader market benchmark.

  In this report, Japan chemicals is In-Line, petrochemical majors are Attractive, and fine chemicals are In-Line.

• Stock ratingMorgan Stanley Stock Rating

  Overweight, Equal-weight, Not-Rated, and Underweight are used to express a judgment on a stock's risk-adjusted total return over the next 12-18 months relative to the industry coverage universe.

  In the coverage table disclosed in the report, multiple companies are listed as O, E, or U, but the text mainly focuses on discussing investor attention points on sectors and major stocks rather than providing new target prices.

Asset mapping & comparison

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

• SUMCO (3436.T)

  Core name in discussions on semiconductor wafers and 300mm wafer supply and demand

  Strengths

  Growing AI semiconductor demand may support demand for 300mm wafers, and investor discussion intensity is high.

  Weaknesses

  The report points out that customer inventory levels are elevated, weakening the short-term shortage narrative.

  Comparison

  Compared with Shin-Etsu Chemical, discussion on Sumco is more concentrated on wafer supply and demand and inventories, rather than PVC or diversified business management capabilities.

  Risks

  Customer inventory digestion is slower than expected, expectations for a 300mm wafer shortage fail to materialize, semiconductor cycle volatility.

• Shin-Etsu Chemical (4063.T)

  Key discussion name driven jointly by PVC and wafer businesses

  Strengths

  Positive evaluations were given to medium-term earnings improvement in the PVC business, steady growth in the wafer business, and management's ability to avoid geopolitical risks.

  Weaknesses

  Some investors worry that PVC prices may adjust after easing Middle East tensions.

  Comparison

  Compared with Sumco, Shin-Etsu Chemical has a more diversified business mix, affected both by the wafer cycle and by changes in PVC prices and geopolitical risks.

  Risks

  Declines in PVC prices, changes in geopolitical risk, wafer business growth below expectations.

• Petrochemical Majors

  The petrochemical segment under Middle East conditions and naphtha procurement disruptions

  Strengths

  The industry view is Attractive, indicating a more positive 12-18 month performance judgment relative to the benchmark.

  Weaknesses

  The market is focused on the impact of difficulties in procuring naphtha feedstock on earnings and operations.

  Comparison

  Compared with electronic chemicals, petrochemical majors are more affected by crude oil, naphtha, and Middle East supply chain variables.

  Risks

  Disruptions in naphtha procurement, crude oil price volatility, supply chain uncertainty, rapid changes in geopolitical risk.

• Toray Industries (3402.T)

  Diversified chemicals name discussed by investors for its medium-term earnings outlook

  Strengths

  Rated Overweight in the coverage table and included in the scope of medium-term earnings outlook discussions.

  Weaknesses

  The main text does not provide specific earnings drivers or quantitative targets, so information granularity is limited.

  Comparison

  Together with Nitto Denko, Nissan Chemical, Asahi Kasei, Mitsui Chemicals, and Mitsubishi Chemical Group, it falls within the scope of investor discussion on medium-term earnings.

  Risks

  Medium-term earnings improvement falls short of expectations, chemicals demand cycle volatility, feedstock and FX disruptions.

• Nitto Denko (6988.T)

  One of the Japanese chemicals and materials names discussed by investors

  Strengths

  Included in discussions on the medium-term earnings outlook, indicating institutional attention.

  Weaknesses

  Rated Underweight in the coverage table, indicating weaker expected risk-adjusted total returns relative to the industry coverage universe.

  Comparison

  Compared with Toray Industries or Shin-Etsu Chemical, the disclosed rating in the report is more cautious.

  Risks

  Earnings growth below peers, lagging valuation or fundamentals, volatility in materials demand.

Key data

• Report date2026-04-17The report cover page is dated April 17, 2026 06:30 AM GMT.
• Investor visit period2026-04-13至2026-04-16The report says it visited U.S. institutional investors.
• Japan chemicals industry viewIn-LineThe report discloses Japan Industry View as In-Line.
• Petrochemical majors industry viewAttractiveThe report discloses the Petrochemical Majors industry view as Attractive.
• Fine chemicals industry viewIn-LineThe report discloses the Fine Chemicals industry view as In-Line.
• Number of global stock ratings under coverage3,679Global ratings distribution table as of March 31, 2026.
• Overweight/Buy proportion42%In the global ratings distribution table, Overweight/Buy accounts for 1,534 companies, or 42% of the total.
• Equal-weight/Hold proportion43%In the global ratings distribution table, Equal-weight/Hold accounts for 1,573 companies, or 43% of the total.
• Underweight/Sell proportion15%In the global ratings distribution table, Underweight/Sell accounts for 568 companies, or 15% of the total.

Impact & implications

For investors, the report suggests that the main stock-selection theme in Japan's chemicals sector is shifting from a purely defensive logic driven by Middle East conflict impacts toward a more comprehensive judgment involving semiconductor materials demand, inventory constraints, PVC price recovery or adjustment, feedstock procurement disruptions, and corporate structural changes. Semiconductor materials still command an attention premium, but customer inventory digestion and real demand need to be verified; petrochemical majors carry a relatively positive industry view, but feedstock-side disruptions may still suppress short-term earnings visibility.

Risks

• Elevated customer inventory levels may weaken the investment thesis of a 300mm wafer shortage and improving semiconductor materials demand.
• After Middle East tensions ease, PVC prices may adjust, affecting earnings expectations for related companies.
• Difficulties in naphtha procurement may impact feedstock supply, costs, and short-term profit margins for petrochemical companies.
• Geopolitics, crude oil prices, and supply chain changes may lead to earnings volatility in the chemicals sector.
• The report contains extensive regulatory disclosures and conflict-of-interest statements; investors should treat the research views as one decision factor rather than the sole basis.

What to watch

• Whether AI semiconductor demand continues to drive real orders for 300mm wafers, rather than merely improving expectations.
• The pace of customer inventory digestion at Sumco and Shin-Etsu Chemical.
• The magnitude and duration of PVC price adjustments after easing Middle East tensions.
• Whether difficulties in naphtha procurement ease, and the impact on the cost side for petrochemical majors.
• Whether Japanese chemical companies' parent-subsidiary dual-listing structures see terminations or governance adjustments.
• Medium-term earnings guidance or subsequent financial reports from Toray Industries, Nitto Denko, Nissan Chemical, Asahi Kasei, Mitsui Chemicals, and Mitsubishi Chemical Group.