No Customer Above Ten PercentWide moat

Sumitomo Corporation (8053) — moat facet

No customer is large enough for Sumitomo to name.

Sumitomo's annual financial report contains no statement that any customer accounts for 10% or more of revenue1. Its risk discussion treats concentration in terms of countries, sectors and business partners instead2.

Sumitomo group companies (number)327Consolidated subsidiaries192Equity-accounted investees123Office locationsSumitomo company profile, March 2026
Hundreds of businesses and no named customer.

That reflects the business. Revenue of ¥7,337.3 billion3 is spread across steel, chemicals, food retail, IT services, cars and energy, sold to thousands of customers.

The risk that matters is the correlation. A recession in Japan would reach the supermarkets, the real estate, SCSK's clients and the car businesses at once, even though no customer is large.

The company lists its business partners among the concentration risks it monitors4, which reflects its partnerships rather than its customers: SMFL, JCOM, Sumisho Air Lease and the power plants are all shared with other owners.

The measure is the absence of a disclosure. The first customer above 10% would signal a concentration the portfolio has never had.

Moat trajectory: Holding steady

No customer disclosure in any recent year.

The number that tests this moat
Reported
Consolidated subsidiaries and equity-accounted investees
327 and 192

The breadth behind the absence of a customer table.

Source: Sumitomo Corporation profile ↗
References
  1. ReportedSumitomo's annual financial report contains no statement that any customer accounts for 10% or more of revenue.
    Sumitomo Corporation, Annual Financial Report for the year to March 2026 - consolidated financial statements and notes, including the SCSK acquisition accounting. — FY to March 2026 · publ. June 2026 · source ↗
  2. ReportedIts risk discussion treats concentration in terms of countries, sectors and business partners instead.
    Sumitomo Corporation, Annual Financial Report for the year to March 2026 - business risks, including concentration, country and commodity risks and the Strait of Hormuz. — FY to March 2026 · publ. June 2026 · source ↗
  3. ReportedRevenue of ¥7,337.3 billion is spread across steel, chemicals, food retail, IT services, cars and energy, sold to thousands of customers.
    Sumitomo Corporation, Consolidated Financial Results for the year ended March 31, 2026 (IFRS) - results, segment profit, the financial position, dividends, the share split and the forecast for the year to March 2027. — FY to March 2026 · publ. May 2026 · source ↗
  4. ReportedThe company lists its business partners among the concentration risks it monitors, which reflects its partnerships rather than its customers: SMFL, JCOM, Sumisho Air Lease and the power plants are all shared with other owners.
    Sumitomo Corporation, Annual Financial Report for the year to March 2026 - business risks, including concentration, country and commodity risks and the Strait of Hormuz. — FY to March 2026 · publ. June 2026 · source ↗
Sources
Generated September 24, 2026