WESCO International, Inc.
MX ˙ BMV ˙ US95082P1057
SecurityMX:WCC / WESCO International, Inc.
InstitutionState Street Corp
Latest Disclosed Ownership1,465,249 shares
Latest Disclosed Value $ 400,921,431
State Street Corp reports 1.44% increase in ownership of WCC / WESCO International, Inc.

On May 15, 2026 - State Street Corp filed a 13F-HR form disclosing ownership of 1,465,249 shares of WESCO International, Inc. (MX:WCC) valued at $400,921,431 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 1,444,442 shares of WESCO International, Inc.. This represents a change in shares of 1.44% during the quarter.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-15 2026-03-31 13F WESCO INTL COM 95082P105 1,465,249 20,807 1.44 400,921 13.46 0.0138
2026-02-13 2025-12-31 13F WESCO INTL COM 95082P105 1,444,442 -17,379 -1.19 353,368 14.29 0.0119
2025-11-14 2025-09-30 13F WESCO INTL COM 95082P105 1,461,821 71,644 5.15 309,175 20.09 0.0107
2025-08-14 2025-06-30 13F WESCO INTL COM 95082P105 1,390,177 22,034 1.61 257,461 21.17 0.0096
2025-05-15 2025-03-31 13F WESCO INTL COM 95082P105 1,368,143 -7,607 -0.55 212,473 -14.65 0.0088
2025-02-14 2024-12-31 13F WESCO INTL COM 95082P105 1,375,750 34,146 2.55 248,956 10.47 0.0098
2024-11-14 2024-09-30 13F WESCO INTL COM 95082P105 1,341,604 27,530 2.10 225,363 8.19 0.0092
2024-08-14 2024-06-30 13F WESCO INTL COM 95082P105 1,314,074 -3,910 -0.30 208,307 -7.72 0.0091
2024-05-15 2024-03-31 13F WESCO INTL COM 95082P105 1,317,984 26,717 2.07 225,744 0.54 0.0101
2024-02-14 2023-12-31 13F WESCO INTL COM 95082P105 1,291,267 42,092 3.37 224,526 24.97 0.0109
2023-11-14 2023-09-30 13F WESCO INTL COM 95082P105 1,249,175 -12,032 -0.95 179,656 -20.45 0.0100
2023-08-14 2023-06-30 13F WESCO INTL COM 95082P105 1,261,207 533,595 73.34 225,832 100.84 0.0119
2023-05-15 2023-03-31 13F WESCO INTL COM 95082P105 727,612 27,647 3.95 112,445 28.31 0.0063
2023-05-15 2022-12-31 13F/A-99 WESCO INTL COM 95082P105 699,965 -10,539 -1.48 87,636 3.32 0.0051
2023-05-15 2022-12-31 13F WESCO INTL COM 95082P105 699,965 -10,539 87,636 0.0051
2022-11-15 2022-09-30 13F WESCO INTL COM 95082P105 710,504 -78 -0.01 84,820 11.45 0.0054
2022-08-15 2022-06-30 13F WESCO INTL COM 95082P105 710,582 -223,656 -23.94 76,103 -37.41 0.0046
2022-05-16 2022-03-31 13F WESCO INTL COM 95082P105 934,238 32,198 3.57 121,582 2.43 0.0060
2022-02-14 2021-12-31 13F WESCO INTL COM 95082P105 902,040 -13,499 -1.47 118,699 12.43 0.0056
2021-11-15 2021-09-30 13F WESCO INTL COM 95082P105 915,539 -6,661 -0.72 105,580 11.35 0.0056
2021-08-16 2021-06-30 13F WESCO INTL COM 95082P105 922,200 -69,051 -6.97 94,821 10.55 0.0050
2021-07-09 2021-03-31 13F/A-1 WESCO INTL COM 95082P105 991,251 -37,963 -3.69 85,773 6.16 0.0049
2021-05-17 2021-03-31 13F WESCO INTL COM 95082P105 991,251 -37,963 85,773 0.0049
2021-02-16 2020-12-31 13F WESCO INTL COM 95082P105 1,029,214 -41,118 -3.84 80,793 71.48 0.0049
2020-11-10 2020-09-30 13F WESCO INTL COM 95082P105 1,070,332 -2,721 -0.25 47,116 25.06 0.0032
2020-08-14 2020-06-30 13F WESCO INTL COM 95082P105 1,073,053 435,430 68.29 37,675 158.58 0.0027
2020-06-19 2020-03-31 13F/A-1 WESCO INTL COM 95082P105 637,623 -28,288 -4.25 14,570 -63.16 0.0013
2020-05-11 2020-03-31 13F WESCO INTL COM 95082P105 637,623 -28,288 14,570 1,279.5394
2020-02-06 2019-12-31 13F WESCO INTL COM 95082P105 665,911 -53,528 -7.44 39,548 15.07 0.0027
2019-11-14 2019-09-30 13F WESCO INTL COM 95082P105 719,439 -37,210 -4.92 34,368 -10.32 0.0026
2019-08-14 2019-06-30 13F WESCO INTL COM 95082P105 756,649 64,708 9.35 38,324 4.48 0.0029
2019-05-15 2019-03-31 13F WESCO INTL COM 95082P105 691,941 46,174 7.15 36,680 18.33 0.0029
2019-02-12 2018-12-31 13F WESCO INTL COM 95082P105 645,767 -8,674 -1.33 30,997 -22.92 0.0028
2018-11-09 2018-09-30 13F WESCO INTL Common equity shares 95082P105 654,441 6,655 1.03 40,213 8.72 0.0031
2018-08-14 2018-06-30 13F WESCO INTL Common equity shares 95082P105 647,786 -6,155 -0.94 36,989 -8.84 0.0031
2018-05-15 2018-03-31 13F WESCO INTL Common equity shares 95082P105 653,941 1,021 0.16 40,575 -8.81 0.0034
2018-02-14 2017-12-31 13F WESCO INTL Common equity shares 95082P105 652,920 8,337 1.29 44,493 18.50 0.0036
2017-11-14 2017-09-30 13F WESCO INTL Common equity shares 95082P105 644,583 -9,187 -1.41 37,547 0.23 0.0032
2017-08-14 2017-06-30 13F WESCO INTL Common equity shares 95082P105 653,770 3,609 0.56 37,459 -17.17 0.0033
2017-05-15 2017-03-31 13F WESCO INTL Common equity shares 95082P105 650,161 21,087 3.35 45,223 8.02 0.0040
2017-02-09 2016-12-31 13F WESCO INTL Common equity shares 95082P105 629,074 57,635 10.09 41,864 19.16 0.0039
2017-01-13 2016-09-30 13F/A-1 WESCO INTL Common equity shares 95082P105 571,439 -5,052 -0.88 35,133 18.36 0.0035
2016-11-14 2016-09-30 13F WESCO INTL Common equity shares 95082P105 571,439 35,133
2016-08-12 2016-06-30 13F WESCO INTL Common equity shares 95082P105 576,491 -928 -0.16 29,684 -5.96 0.0032
2016-05-20 2016-03-31 13F/A-1 WESCO INTL Common equity shares 95082P105 577,419 12,612 2.23 31,566 27.96 0.0034
2016-05-12 2016-03-31 13F WESCO INTL Common equity shares 95082P105 577,419 31,566
2016-02-16 2015-12-31 13F WESCO INTL Common equity shares 95082P105 564,807 6,383 1.14 24,669 -4.94 0.0027
2015-11-16 2015-09-30 13F WESCO INTL Common equity shares 95082P105 558,424 -40,474 -6.76 25,951 -36.87 0.0030
2015-08-13 2015-06-30 13F WESCO INTL Common equity shares 95082P105 598,898 -22,686 -3.65 41,109 -5.38 0.0044
2015-05-15 2015-03-31 13F WESCO INTL Common equity shares 95082P105 621,584 -9,140 -1.45 43,445 -9.62 0.0045
2015-02-11 2014-12-31 13F WESCO INTL Common equity shares 95082P105 630,724 1,296 0.21 48,067 -2.42 0.0048
2014-11-12 2014-09-30 13F/A-1 WESCO INTL Common equity shares 95082P105 629,428 -22,386 -3.43 49,259 -12.51 0.0053
2014-11-10 2014-09-30 13F WESCO INTL Common equity shares 95082P105 629,428 49,259
2014-08-12 2014-06-30 13F WESCO INTL Common equity shares 95082P105 651,814 13,655 2.14 56,304 6.01 0.0061
2014-05-15 2014-03-31 13F/A-1 WESCO INTL Common equity shares 95082P105 638,159 -6,440 -1.00 53,112 -9.52 0.0060
2014-05-13 2014-03-31 13F WESCO INTL Common equity shares 95082P105 638,658 53,154
2014-02-06 2013-12-31 13F/A-1 WESCO INTL Common equity shares 95082P105 644,599 3,088 0.48 58,701 19.56 0.0065
2014-02-06 2013-12-31 13F WESCO INTL Common equity shares 95082P105 610,423 41,157
2013-11-12 2013-09-30 13F WESCO INTL Common equity shares 95082P105 641,511 -9,573 -1.47 49,099 10.97 0.0061
2013-08-08 2013-06-30 13F WESCO INTL Common equity shares 95082P105 651,084 651,084 44,246 0.0058
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.