PITTSBURGH, PA
WESCO INTERNATIONAL INCWCC— Latest position per institution from SEC 13F filings
15
Institutional holders
39.64M
Total shares held
11.49B
Estimated value
1.98M
Avg. position size
BLACKROCK, INC.
CIK 2012383
Shares
8.96M
Value
3.09B
Filed
Jun 30, 2026
BLACKROCK FINANCE, INC.
CIK 1364742
Shares
4.68M
Value
741.12M
Filed
Jun 30, 2024
VANGUARD GROUP INC
CIK 102909
Shares
4.56M
Value
1.11B
Filed
Dec 31, 2025
PECONIC PARTNERS LLC
CIK 1050464
Shares
2.45M
Value
426.07M
Filed
Dec 31, 2023
VANGUARD CAPITAL MANAGEMENT LLC
CIK 2100119
Shares
2.20M
Value
760.14M
Filed
Jun 30, 2026
VANGUARD PORTFOLIO MANAGEMENT LLC
CIK 2100121
Shares
2.07M
Value
715.81M
Filed
Jun 30, 2026
WELLINGTON MANAGEMENT GROUP LLP
CIK 902219
Shares
2.02M
Value
697.16M
Filed
Jun 30, 2026
DIMENSIONAL FUND ADVISORS LP
CIK 354204
Shares
2.01M
Value
695.58M
Filed
Jun 30, 2026
STATE STREET CORP
CIK 93751
Shares
1.52M
Value
523.61M
Filed
Jun 30, 2026
LEONARD GREEN & PARTNERS, L.P.
CIK 1175523
Shares
1.25M
Value
210.53M
Filed
Sep 30, 2024
JANE STREET GROUP, LLC
CIK 1595888
Shares
1.01M
Value
349.68M
Filed
Jun 30, 2026
INVESCO LTD.
CIK 914208
Shares
971.59K
Value
335.62M
Filed
Jun 30, 2026
GEODE CAPITAL MANAGEMENT, LLC
CIK 1214717
Shares
927.91K
Value
320.61M
Filed
Jun 30, 2026
NORGES BANK
CIK 1374170
Shares
860.37K
Value
297.20M
Filed
Jun 30, 2026
BANK OF AMERICA CORP /DE/
CIK 70858
Shares
857.78K
Value
296.30M
Filed
Jun 30, 2026
BANK OF NEW YORK MELLON CORP
CIK 1390777
Shares
722.30K
Value
249.50M
Filed
Jun 30, 2026
BAUPOST GROUP LLC/MA
CIK 1061768
Shares
662.88K
Value
228.98K
Filed
Jun 30, 2026
ALYESKA INVESTMENT GROUP, L.P.
CIK 1453072
Shares
653.59K
Value
225.77M
Filed
Jun 30, 2026
MORGAN STANLEY
CIK 895421
Shares
634.47K
Value
219.17M
Filed
Jun 30, 2026
CITIGROUP INC
CIK 831001
Shares
623.91K
Value
215.52M
Filed
Jun 30, 2026
| # | Institution | CIK | Shares | Est. Value | Period |
|---|---|---|---|---|---|
| 1 | BLACKROCK, INC. | 2012383 | 8.96M | 3.09B | Jun 30, 2026 |
| 2 | BLACKROCK FINANCE, INC. | 1364742 | 4.68M | 741.12M | Jun 30, 2024 |
| 3 | VANGUARD GROUP INC | 102909 | 4.56M | 1.11B | Dec 31, 2025 |
| 4 | PECONIC PARTNERS LLC | 1050464 | 2.45M | 426.07M | Dec 31, 2023 |
| 5 | VANGUARD CAPITAL MANAGEMENT LLC | 2100119 | 2.20M | 760.14M | Jun 30, 2026 |
| 6 | VANGUARD PORTFOLIO MANAGEMENT LLC | 2100121 | 2.07M | 715.81M | Jun 30, 2026 |
| 7 | WELLINGTON MANAGEMENT GROUP LLP | 902219 | 2.02M | 697.16M | Jun 30, 2026 |
| 8 | DIMENSIONAL FUND ADVISORS LP | 354204 | 2.01M | 695.58M | Jun 30, 2026 |
| 9 | STATE STREET CORP | 93751 | 1.52M | 523.61M | Jun 30, 2026 |
| 10 | LEONARD GREEN & PARTNERS, L.P. | 1175523 | 1.25M | 210.53M | Sep 30, 2024 |
| 11 | JANE STREET GROUP, LLC | 1595888 | 1.01M | 349.68M | Jun 30, 2026 |
| 12 | INVESCO LTD. | 914208 | 971.59K | 335.62M | Jun 30, 2026 |
| 13 | GEODE CAPITAL MANAGEMENT, LLC | 1214717 | 927.91K | 320.61M | Jun 30, 2026 |
| 14 | NORGES BANK | 1374170 | 860.37K | 297.20M | Jun 30, 2026 |
| 15 | BANK OF AMERICA CORP /DE/ | 70858 | 857.78K | 296.30M | Jun 30, 2026 |
| 16 | BANK OF NEW YORK MELLON CORP | 1390777 | 722.30K | 249.50M | Jun 30, 2026 |
| 17 | BAUPOST GROUP LLC/MA | 1061768 | 662.88K | 228.98K | Jun 30, 2026 |
| 18 | ALYESKA INVESTMENT GROUP, L.P. | 1453072 | 653.59K | 225.77M | Jun 30, 2026 |
| 19 | MORGAN STANLEY | 895421 | 634.47K | 219.17M | Jun 30, 2026 |
| 20 | CITIGROUP INC | 831001 | 623.91K | 215.52M | Jun 30, 2026 |
Data sourced from SEC Form 13F institutional holdings reports. Positions reflect the most recent filing per institution.