Westinghouse Air Brake Technologies Corporation
MX ˙ BMV ˙ US9297401088
SecurityMX:WAB / Westinghouse Air Brake Technologies Corporation
InstitutionRobeco Institutional Asset Management B.V.
Latest Disclosed Ownership563,907 shares
Latest Disclosed Value $ 140,925,996
Robeco Institutional Asset Management B.V. reports 8.68% decrease in ownership of WAB / Westinghouse Air Brake Technologies Corporation

On April 21, 2026 - Robeco Institutional Asset Management B.V. filed a 13F-HR form disclosing ownership of 563,907 shares of Westinghouse Air Brake Technologies Corporation (MX:WAB) valued at $140,925,996 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 23, 2026 disclosing 617,522 shares of Westinghouse Air Brake Technologies Corporation. This represents a change in shares of -8.68% 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)
2026-04-21 2026-03-31 13F WABTEC COM 929740108 563,907 -53,615 -8.68 140,926 6.92 0.2009
2026-01-23 2025-12-31 13F WABTEC COM 929740108 617,522 -188,373 -23.37 131,810 -18.41 0.1877
2025-10-22 2025-09-30 13F WABTEC COM 929740108 805,895 27,739 3.56 161,558 -0.83 0.2340
2025-07-18 2025-06-30 13F WABTEC COM 929740108 778,156 280,140 56.25 162,907 80.38 0.2634
2025-04-23 2025-03-31 13F WABTEC COM 929740108 498,016 18,951 3.96 90,315 -0.56 0.1754
2025-01-23 2024-12-31 13F WABTEC COM 929740108 479,065 -3,942 -0.82 90,826 3.45 0.1722
2024-10-29 2024-09-30 13F WABTEC COM 929740108 483,007 70,237 17.02 87,796 34.58 0.1744
2024-07-23 2024-06-30 13F WABTEC COM 929740108 412,770 66,456 19.19 65,238 29.31 0.1404
2024-04-24 2024-03-31 13F WABTEC COM 929740108 346,314 94,955 37.78 50,451 58.17 0.1096
2024-02-14 2023-12-31 13F/A-1 WABTEC COM 929740108 251,359 89,486 55.28 31,897 85.43 0.0773
2024-02-08 2023-12-31 13F WABTEC COM 929740108 143,704 -18,169 251 0.0471
2023-10-24 2023-09-30 13F WABTEC COM 929740108 161,873 11,310 7.51 17,202 4.18 0.0460
2023-07-24 2023-06-30 13F WABTEC COM 929740108 150,563 -19,061 -11.24 16,512 -3.68 0.0433
2023-05-04 2023-03-31 13F WABTEC COM 929740108 169,624 27,514 19.36 17,142 20.85 0.0467
2023-02-07 2022-12-31 13F WABTEC COM 929740108 142,110 47,528 50.25 14,184 84.33 0.0409
2022-12-01 2022-09-30 13F/A-1 WABTEC COM 929740108 94,582 3,438 3.77 7,695 2.86 0.0249
2022-10-27 2022-09-30 13F WABTEC COM 929740108 94,582 3,438 7,695 0.0245
2022-12-01 2022-06-30 13F/A-1 WABTEC COM 929740108 91,144 17,037 22.99 7,481 4.98 0.0232
2022-07-27 2022-06-30 13F WABTEC COM 929740108 91,144 17,037 7,481 0.0229
2022-12-01 2022-03-31 13F/A-1 WABTEC COM 929740108 74,107 31,214 72.77 7,126 80.36 0.0168
2022-04-26 2022-03-31 13F WABTEC COM 929740108 74,107 31,214 7,126 0.0166
2022-12-01 2021-12-31 13F/A-1 WABTEC COM 929740108 42,893 -4,319 -9.15 3,951 -2.88 0.0084
2022-01-31 2021-12-31 13F WABTEC COM 929740108 42,893 -4,319 3,951 0.0083
2022-12-01 2021-09-30 13F/A-1 WABTEC COM 929740108 47,212 608 1.30 4,068 6.08 0.0090
2021-10-20 2021-09-30 13F WABTEC COM 929740108 47,212 608 4,068 0.0089
2022-12-01 2021-06-30 13F/A-1 WABTEC COM 929740108 46,604 4,866 11.66 3,835 16.11 0.0085
2021-07-28 2021-06-30 13F WABTEC COM 929740108 46,604 4,866 3,835 0.0084
2022-12-01 2021-03-31 13F/A-1 WABTEC COM 929740108 41,738 -3,910 -8.57 3,303 -1.11 0.0081
2021-04-23 2021-03-31 13F WABTEC COM 929740108 41,738 -3,910 3,303 0.0080
2022-12-01 2020-12-31 13F/A-1 WABTEC COM 929740108 45,648 10,317 29.20 3,340 52.86 0.0088
2021-01-28 2020-12-31 13F WABTEC COM 929740108 45,648 10,317 3,340 0.0087
2021-01-19 2020-09-30 13F/A-1 WABTEC COM 929740108 35,331 13,679 63.18 2,185 75.36 0.0068
2020-10-29 2020-09-30 13F WABTEC COM 929740108 35,331 13,679 2,185 6,747.9911
2021-01-19 2020-06-30 13F/A-1 WABTEC COM 929740108 21,652 21,652 1,246 0.0042
2020-07-20 2020-06-30 13F WABTEC COM 929740108 21,652 21,652 1,246 4,227.9002
2020-04-30 2020-03-31 13F WABTEC COM 929740108 0 -793 -100.00 0 -100.00
2021-01-19 2019-12-31 13F/A-1 WABTEC COM 929740108 793 -1,529 -65.85 62 -62.87 0.0002
2020-02-06 2019-12-31 13F WABTEC COM 929740108 793 -1,529 62 198.3022
2021-01-19 2019-09-30 13F/A-1 WABTEC COM 929740108 2,322 2,322 167 0.0006
2019-10-17 2019-09-30 13F WABTEC COM 929740108 2,322 2,322 167 588.7437
2021-01-19 2019-06-30 13F/A-1 WABTEC COM 929740108 0 -5,606 -100.00 0 -100.00
2021-01-19 2019-03-31 13F/A-1 WABTEC COM 929740108 5,606 -82,298 -93.62 415 -93.28 0.0015
2019-05-02 2019-03-31 13F WABTEC COM 929740108 5,606 -82,298 415 1,523.7324
2021-01-19 2018-12-31 13F/A-1 WABTEC COM 929740108 87,904 -5,535 -5.92 6,177 -36.96 0.0277
2019-02-08 2018-12-31 13F WABTEC COM 929740108 87,904 -5,535 6,177 27,688.0964
2021-01-19 2018-09-30 13F/A-1 WABTEC COM 929740108 93,439 91,616 5,025.56 9,799 5,343.89 0.0388
2018-10-25 2018-09-30 13F WABTEC COM 929740108 93,439 93,439 9,799
2021-01-19 2018-06-30 13F/A-1 WABTEC COM 929740108 1,823 0 0.00 180 21.62 0.0008
2021-01-19 2018-03-31 13F/A-1 WABTEC COM 929740108 1,823 0 0.00 148 0.00 0.0007
2018-05-07 2018-03-31 13F WABTEC COM 929740108 1,823 0 148 692.1268
2021-01-19 2017-12-31 13F/A-1 WABTEC COM 929740108 1,823 1,823 148 0.0008
2018-01-25 2017-12-31 13F WABTEC COM 929740108 1,823 1,823 148 765.4317
2021-01-19 2017-06-30 13F/A-1 WABTEC COM 929740108 0 -1,190 -100.00 0 -100.00
2021-01-19 2017-03-31 13F/A-1 WABTEC COM 929740108 1,190 0 0.00 92 -6.12 0.0006
2017-05-15 2017-03-31 13F WABTEC COM 929740108 1,190 0 92 611.0584
2017-02-09 2016-12-31 13F WABTEC COM 929740108 1,190 1,190 98 0.0008
2016-05-16 2016-03-31 13F WABTEC COM 929740108 0 0 0 0.0000
2016-02-08 2015-12-31 13F WABTEC COM 929740108 0 -2,952 -100.00 0 -100.00
2015-11-12 2015-09-30 13F WABTEC COM 929740108 2,952 0 0.00 260 -6.47 0.0020
2015-08-17 2015-06-30 13F WABTEC COM 929740108 2,952 0 0.00 278 -0.71 0.0021
2015-04-24 2015-03-31 13F WABTEC COM 929740108 2,952 2,952 280 0.0021
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.