WESCO International, Inc.
MX ˙ BMV ˙ US95082P1057
SecurityMX:WCC / WESCO International, Inc.
InstitutionRBF Capital, LLC
Latest Disclosed Ownership18,000 shares
Latest Disclosed Value $ 4,925,160
RBF Capital, LLC ownership in WCC / WESCO International, Inc.

On May 18, 2026 - RBF Capital, LLC filed a 13F-HR/A form disclosing ownership of 18,000 shares of WESCO International, Inc. (MX:WCC) valued at $4,925,160 USD as of March 31, 2026. The entity filed a previous 13F-HR/A on February 17, 2026 disclosing 18,000 shares of WESCO International, Inc.. This represents a change in shares of 0.00% 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)
2026-05-18 2026-03-31 13F/A-1 WESCO INTL COM 95082P105 18,000 0 0.00 4,925 11.86 0.2408
2026-05-14 2026-03-31 13F WESCO INTL COM 95082P105 18,000 0 4,925 0.2576
2026-02-17 2025-12-31 13F/A-1 WESCO INTL COM 95082P105 18,000 0 0.00 4,404 15.66 0.1955
2026-02-17 2025-12-31 13F WESCO INTL COM 95082P105 18,000 0 4,404 0.1955
2025-11-14 2025-09-30 13F WESCO INTL COM 95082P105 18,000 0 0.00 3,807 14.22 0.1698
2025-08-14 2025-06-30 13F WESCO INTL COM 95082P105 18,000 0 0.00 3,334 19.25 0.1586
2025-05-15 2025-03-31 13F WESCO INTL COM 95082P105 18,000 0 0.00 2,795 -14.18 0.1678
2025-02-14 2024-12-31 13F WESCO INTL COM 95082P105 18,000 -4,000 -18.18 3,257 -11.85 0.1685
2024-11-14 2024-09-30 13F WESCO INTL COM 95082P105 22,000 0 0.00 3,696 5.97 0.1852
2024-08-14 2024-06-30 13F WESCO INTL COM 95082P105 22,000 0 0.00 3,487 -7.46 0.2004
2024-05-15 2024-03-31 13F WESCO INTL COM 95082P105 22,000 4,000 22.22 3,768 20.42 0.2105
2024-02-14 2023-12-31 13F WESCO INTL COM 95082P105 18,000 0 0.00 3,130 20.90 0.1893
2023-11-14 2023-09-30 13F WESCO INTL COM 95082P105 18,000 0 0.00 2,589 -19.70 0.1701
2023-08-14 2023-06-30 13F WESCO INTL COM 95082P105 18,000 0 0.00 3,223 15.89 0.2009
2023-05-16 2023-03-31 13F WESCO INTL COM 95082P105 18,000 0 0.00 2,782 23.38 0.2020
2023-02-14 2022-12-31 13F WESCO INTL COM 95082P105 18,000 0 0.00 2,254 4.89 0.1694
2022-11-14 2022-09-30 13F WESCO INTL COM 95082P105 18,000 0 0.00 2,149 5.19 0.1811
2022-08-15 2022-06-30 13F WESCO INTL COM 95082P105 18,000 0 0.00 2,043 -13.10 0.1421
2022-05-16 2022-03-31 13F WESCO INTL COM 95082P105 18,000 0 0.00 2,351 -0.76 0.1503
2022-02-14 2021-12-31 13F WESCO INTL COM 95082P105 18,000 0 0.00 2,369 14.11 0.1458
2021-11-15 2021-09-30 13F WESCO INTL COM 95082P105 18,000 0 0.00 2,076 12.16 0.1158
2021-08-16 2021-06-30 13F WESCO INTL COM 95082P105 18,000 0 0.00 1,851 18.81 0.1035
2021-05-17 2021-03-31 13F WESCO INTL COM 95082P105 18,000 0 0.00 1,558 10.18 0.0972
2021-03-02 2020-12-31 13F/A-1 WESCO INTL COM 95082P105 18,000 -6,969 -27.91 1,414 28.66 0.1082
2021-02-11 2020-12-31 13F WESCO INTL COM 95082P105 18,000 -6,969 1,414 122,655.2165
2020-11-16 2020-09-30 13F/A-1 WESCO INTL COM 95082P105 24,969 0 0.00 1,099 25.31 0.1108
2020-11-16 2020-09-30 13F WESCO INTL COM 95082P105 20,902 1,060
2020-08-14 2020-06-30 13F WESCO INTL COM 95082P105 24,969 -10,000 -28.60 877 9.63 0.0946
2020-05-18 2020-03-31 13F WESCO INTL COM 95082P105 34,969 0 0.00 800 -61.48 0.1047
2020-02-13 2019-12-31 13F WESCO INTL COM 95082P105 34,969 10,000 40.05 2,077 74.10 0.1984
2019-11-13 2019-09-30 13F WESCO INTL COM 95082P105 24,969 0 0.00 1,193 -5.69 0.1337
2019-08-13 2019-06-30 13F WESCO INTL COM 95082P105 24,969 6,969 38.72 1,265 32.60 0.1273
2019-05-15 2019-03-31 13F WESCO INTL COM 95082P105 18,000 10,000 125.00 954 148.44 0.1120
2019-02-14 2018-12-31 13F WESCO INTL COM 95082P105 8,000 0 0.00 384 -21.95 0.0501
2018-11-14 2018-09-30 13F WESCO INTL COM 95082P105 8,000 0 0.00 492 7.66 0.0534
2018-08-14 2018-06-30 13F WESCO INTL COM 95082P105 8,000 0 0.00 457 -7.86 0.0537
2018-05-15 2018-03-31 13F WESCO INTL COM 95082P105 8,000 0 0.00 496 -8.99 0.0591
2018-02-14 2017-12-31 13F WESCO INTL COM 95082P105 8,000 0 0.00 545 16.95 0.0601
2017-11-14 2017-09-30 13F WESCO INTL COM 95082P105 8,000 0 0.00 466 1.75 0.0589
2017-08-14 2017-06-30 13F WESCO INTL COM 95082P105 8,000 0 0.00 458 -17.63 0.0601
2017-05-15 2017-03-31 13F WESCO INTL COM 95082P105 8,000 0 0.00 556 4.51 0.0761
2017-02-14 2016-12-31 13F WESCO INTL COM 95082P105 8,000 -5,000 -38.46 532 -33.42 0.0758
2016-11-14 2016-09-30 13F WESCO INTL COM 95082P105 13,000 3,000 30.00 799 55.15 0.1368
2016-08-15 2016-06-30 13F WESCO INTL COM 95082P105 10,000 0 0.00 515 -5.85 0.1023
2016-05-16 2016-03-31 13F WESCO INTERNATIONAL INC. CMN Common Stock 95082P105 10,000 10,000 547 0.1047
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.