WESCO International, Inc. (WCC) ownership: Top institutional holder: BlackRock, Inc. ($2.57B). Insider activity: Net Seller (1 buys, 19 sells). 8 recent congressional STOCK Act disclosures. SEC EDGAR first-party data.
| Holder | Shares | Market Value | Reported |
|---|---|---|---|
| BlackRock, Inc. | 9390627.00 | $2.57B | 2026-03-31 |
| VANGUARD GROUP INC | 4556697.00 | $1.11B | 2025-12-31 |
| WELLINGTON MANAGEMENT GROUP LLP | 3600115.00 | $985.06M | 2026-03-31 |
| DIMENSIONAL FUND ADVISORS LP | 2233127.00 | $610.97M | 2026-03-31 |
| VANGUARD CAPITAL MANAGEMENT LLC | 2187476.00 | $598.54M | 2026-03-31 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 2073992.00 | $567.49M | 2026-03-31 |
| Invesco Ltd. | 1509549.00 | $413.04M | 2026-03-31 |
| STATE STREET CORP | 1465249.00 | $400.92M | 2026-03-31 |
| Insider | Transaction | Value | Date |
|---|---|---|---|
| Sell | null | 2026-05-11 | |
| Sell | null | 2026-05-06 | |
| Sell | null | 2026-05-06 | |
| Sell | null | 2026-05-06 | |
| Sell | null | 2026-05-06 | |
| Buy | null | 2026-05-06 | |
| Sell | null | 2026-05-06 | |
| Sell | null | 2026-05-06 |
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Institutional data from SEC Form 13F. Insider data from SEC Form 4. Congressional data from STOCK Act disclosures. Not personalized investment advice.