stockrowWhat it does
WESCO International is a business-to-business distributor based in Pittsburgh, Pennsylvania. Founded in 1922, it is led by Chairman, President and Chief Executive Officer John J. Engel. The company supplies products and services to contractors, manufacturers, technology companies, telecommunications providers and utilities.
Wesco connects customers with products made by thousands of suppliers. These range from electrical equipment, wire and cable to network infrastructure, security systems and equipment used on power grids. Customers use them in projects and operations such as building data centers, maintaining factories and expanding electricity and broadband networks.
The company also helps customers manage the movement and use of those products. Its services include procurement, warehousing, inventory management, transportation, project deployment, product assembly, kitting and labeling. For a construction project, for example, Wesco can help secure materials and keep supplies on hand at the job site.
Wesco operates through three businesses: Electrical & Electronic Solutions, Communications & Security Solutions, and Utility & Broadband Solutions. Its network includes distribution and fulfillment centers and sales offices. The company had approximately 21,000 full-time employees worldwide at December 31, 2025. Its data center offering draws on products and services from all three businesses.
How it makes money
Wesco earns revenue by selling products and providing logistics and supply chain services. Customers can buy materials for a particular project, obtain products used in their manufacturing processes, or use Wesco’s inventory, procurement and other services to support ongoing operations.
Electrical & Electronic Solutions, or EES, sells electrical equipment and supplies, automation devices, lighting, safety products, wire and cable. Its customers include manufacturers, contractors and equipment makers. It also provides project execution, supply chain, lighting and automation services.
Communications & Security Solutions, or CSS, supplies network infrastructure, connectivity and security products. Its data center business combines products and services for design, development, operations, maintenance and support. CSS sells directly to end users and through contractors and integrators. Wesco says it adds products and services as data center projects progress and after deployment.
Utility & Broadband Solutions, or UBS, supplies utilities and communications providers with products such as transformers, switches, cable and connectivity equipment. Its services include project design, meter testing, emergency response and materials management.
Wesco seeks to pass supplier price increases through to customers. It also uses locally sourced products and changes to its logistics and supply chain in response to tariffs. In 2025, large project sales contributed to lower gross margins in EES and CSS, while competitive pressure in public power affected UBS margins. Wesco later said its data center business had become margin accretive, as service content increased.
Net sales were $23.5 billion for 2025. In the third quarter of 2026, Wesco reported double-digit sales growth versus the prior year; it did not provide a quarterly sales total in the material cited here.
| Segment | Revenue, FY2025 | Share | Change on the year |
|---|---|---|---|
| CSS | $9.1 billion | 38.7% | 18.3% |
| EES | $9.0 billion | 38.1% | 6.72% |
| UBS | $5.5 billion | 23.2% | −4.89% |
Customers and how it sells
Wesco serves nearly 130,000 active customers across commercial and industrial businesses, technology companies, telecommunications providers and utilities. Its EES customers include manufacturers, contractors and companies that make equipment. UBS serves investor-owned utilities, electric cooperatives, municipalities, broadband operators and contractors working for those customers.
CSS serves industries including technology, finance, telecommunications, transportation, healthcare and retail. It sells directly to end users as well as through channel partners such as data communications contractors, security and network integrators, and systems integrators. Wesco says its data center customers include hyperscalers, multi-tenant data centers, emerging AI companies and enterprise customers.
The customer base is not dominated by a single buyer: the top ten customers accounted for approximately 15% of sales in 2025, and no single customer accounted for more than 5%.
The United States generated $17.4 billion of revenue in FY2025, or 74.0%. Canada generated $3.2 billion, while other international markets generated $2.9 billion. Wesco operates more than 700 sites in approximately 50 countries, including distribution centers, fulfillment centers and sales offices. Individual locations tailor their inventories to local customer needs, while the network also serves businesses operating across multiple locations.
| Region | Revenue, FY2025 | Share | Change on the year |
|---|---|---|---|
| United States | $17.4 billion | 74.0% | 7.42% |
| Canada | $3.2 billion | 13.5% | 8.34% |
| Other International | $2.9 billion | 12.5% | 9.15% |
Suppliers and costs
Wesco buys products from more than 35,000 suppliers, predominantly located in North America, whose products are manufactured around the world. It sources electrical controls, communications and security equipment, wire and cable, lighting, automation products and general supplies. Its supplier relationships also provide technical training and sales and marketing support.
In 2025, the ten largest suppliers accounted for approximately 32% of purchases, and no single supplier accounted for more than 6%. Wesco has commercial agreements with more than 450 preferred suppliers; approximately 68% of purchases are made under those arrangements.
Cost of goods sold was $18.5 billion for 2025. It increased as a percentage of sales from the prior year, reflecting lower gross margins across all three segments. Wesco attributed the largest decline to competitive pressure in the UBS public power market, with large project sales affecting EES and CSS.
Selling, general and administrative expenses include payroll, facilities, transportation and information technology costs. Wesco also carries inventory and receivables while serving customers: operating cash flow fell in 2025, in part because of changes in receivables and inventories associated with sales growth and large projects.
- Revenue$23.5B
- Cost of revenue−$18.5B
- Selling, general and administrative−$3.5B
- Other operating costs−$197.6M
- Operating income$1.2B
Competitive position
Wesco competes across its end markets and geographic areas on product range and availability, service capabilities, proximity and price. EES operates in fragmented markets that include thousands of small, regional and locally based private businesses, along with several large multinational companies. The available company disclosures do not name a specific competitor in these markets.
In public power, Wesco faces competitive pressure. In 2025, that pressure contributed to lower gross margin in UBS. Wesco has also said it does not face a direct one-for-one competitor across its grid services offering.
Wesco’s network combines local inventory and customer relationships with distribution and fulfillment facilities serving customers in multiple locations. Its product portfolio and technical staff support offerings that combine equipment with services such as project deployment, materials management and installation enhancement.
Our reading: The geographic network and product range are useful competitive assets, but fragmentation and price competition limit the evidence that scale alone creates a strong moat. Our reading: Technical services and project integration can differentiate Wesco’s offer, although the available evidence does not establish how difficult those services are for customers to replace. Our reading: The company’s statement about grid services points to differentiation in that offering, but does not establish an absence of competition for individual parts of the work.
Growth opportunities
Wesco identifies digitalization, including AI-driven data centers and automation, as long-term growth drivers. It also points to electrification, increased power generation and supply chain resiliency, including reshoring. The company expects its portfolio, services and geographic reach to help it grow sales faster than the overall industry over the long term.
In 2025, CSS data center sales were the primary driver of company-wide sales growth. EES also grew in its equipment-maker and construction businesses, helped in part by data center projects and infrastructure activity. UBS utility sales declined as public power activity weakened, while its broadband business grew with continued network investment.
Wesco is expanding its data center capabilities. It acquired Singapore-based Newark Engineering, adding cooling expertise. It also says a large, multiyear grid services contract is expected to begin contributing meaningfully in the first half of 2027.
Wesco is deploying a digital platform across its businesses. The company says the platform is intended to improve resource efficiency, and it expects at least 100 basis points of EBITDA margin expansion from digital transformation. It also says there is a meaningful lag between data center customers announcing capital spending and Wesco participating as projects progress.
- $18.2BFY2021
- $21.4BFY2022
- $22.4BFY2023
- $21.8BFY2024
- $23.5BFY2025
- $26.8BFY2026 guidance
Structural risks
- Economic and trade conditions: Adverse economic conditions can affect Wesco and its customers. Tariffs and other trade measures can increase goods costs, limit material availability and disrupt supply chains, pricing and demand.
- Suppliers and competition: Losing key suppliers could reduce sales, profit margins and earnings. Competitive pressure in public power has already affected UBS gross margins.
- Working capital: Large projects can require more inventory and generate receivables before cash is collected. Wesco says long-cycle projects and longer-term customer commitments put pressure on working capital intensity.
- Technology and execution: A significant information-systems disruption or failure could interrupt operations. Expansion into new activities, products, services or geographies could increase costs and fail to achieve the intended results.
- Debt and interest: Debt service commitments can limit growth and constrain Wesco’s ability to meet obligations. Debt agreements contain restrictions, and changes in interest rates can affect borrowing costs.
Bottom line
Our reading
Our reading: Wesco is a distributor whose network, supplier relationships and services connect customers to products needed for construction and ongoing operations. Data centers and power infrastructure offer growth opportunities, while competitive pricing, project-related working capital needs and debt service remain important constraints. Its ability to add services as projects progress is relevant to how that growth translates into margins.