WESCO International, Inc. splits its revenue into 3 lines in its filings. The largest line in fiscal 2025, which ended Dec 31, 2025 was CSS at $9.1 billion, 39% of the total.
USD in millions. The percent under a figure is the change from the year before.
| Line |
FY 2026
Sep 30, 2026
|
FY 2025
Dec 31, 2025
|
FY 2024
Dec 31, 2024
|
FY 2023
Dec 31, 2023
|
FY 2022
Dec 31, 2022
|
FY 2021
Dec 31, 2021
|
FY 2020
Dec 31, 2020
|
FY 2019
Dec 31, 2019
|
FY 2018
Dec 31, 2018
|
FY 2017
Dec 31, 2017
|
FY 2016
Dec 31, 2016
|
|---|---|---|---|---|---|---|---|---|---|---|---|
| Revenue |
26,040
|
23,511
|
21,819
|
22,385
|
21,420
|
18,218
|
12,326
|
8,359
|
8,177
|
7,679
|
7,336
|
| CSS |
10,518
+20.0%
share 40.4%
|
9,101
+18.3%
share 38.7%
|
7,692
+5.2%
share 35.3%
|
7,313
+14.2%
share 32.7%
|
6,402
+12.0%
share 29.9%
|
5,715
+72.0%
share 31.4%
|
3,323
+265.4%
share 27.0%
|
909
share 10.9%
|
—
|
—
|
—
|
| EES |
9,800
+11.8%
share 37.6%
|
8,956
+6.7%
share 38.1%
|
8,392
-0.7%
share 38.5%
|
8,450
-4.2%
share 37.7%
|
8,823
+15.8%
share 41.2%
|
7,621
+39.1%
share 41.8%
|
5,480
+12.7%
share 44.5%
|
4,861
share 58.1%
|
—
|
—
|
—
|
| UBS |
5,722
+5.7%
share 22.0%
|
5,454
-4.9%
share 23.2%
|
5,735
-13.4%
share 26.3%
|
6,623
+6.9%
share 29.6%
|
6,195
+26.9%
share 28.9%
|
4,881
+38.5%
share 26.8%
|
3,523
+36.1%
share 28.6%
|
2,589
share 31.0%
|
—
|
—
|
—
|
How these figures are calculated
Annual columns are full-year amounts from the annual report (Form 10-K, 20-F, or 40-F). If a company restates a year, the latest filed number is shown. USD in millions. Each group is a separate split of total revenue, so the groups are not added together. Share of revenue is that line divided by total revenue. The first column adds the latest year-to-date segment amount to the last fiscal year and subtracts the year-ago year-to-date amount. More on our methodology.
Company profile
- Industry
- Wholesale-Electrical Apparatus & Equipment, Wiring Supplies (SIC 5063)
- Listed as
- WCC (NYSE)
- Fiscal year ends
- December 31
- Headquarters
- Pittsburgh, PA
- SEC filer status
- Large accelerated filer
- SEC CIK
- 929008
- Former names
- CDW HOLDING CORP (until Jun 24, 1998)
Source: SEC EDGAR filings. This is company-reported data, not investment advice.