Westinghouse Air Brake Technologies Corporation
MX ˙ BMV ˙ US9297401088
SecurityMX:WAB / Westinghouse Air Brake Technologies Corporation
InstitutionBnp Paribas Arbitrage, Sa
Latest Disclosed Ownership353,525 shares
Latest Disclosed Value $ 88,349,433
Bnp Paribas Arbitrage, Sa reports 33.22% increase in ownership of WAB / Westinghouse Air Brake Technologies Corporation

On May 12, 2026 - Bnp Paribas Arbitrage, Sa filed a 13F-HR form disclosing ownership of 353,525 shares of Westinghouse Air Brake Technologies Corporation (MX:WAB) valued at $88,349,433 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 265,360 shares of Westinghouse Air Brake Technologies Corporation. This represents a change in shares of 33.22% 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)
2026-05-12 2026-03-31 13F Westinghouse Air Brake Technologies Equity 929740108 353,525 88,165 33.22 88,349 55.98 0.0429
2026-02-10 2025-12-31 13F Westinghouse Air Brake Technologies Equity 929740108 265,360 155,514 141.57 56,641 157.23 0.0257
2025-11-13 2025-09-30 13F Westinghouse Air Brake Technologies Equity 929740108 109,846 -161,021 -59.45 22,021 -61.17 0.0118
2025-08-14 2025-06-30 13F Westinghouse Air Brake Technologies Equity 929740108 270,867 -109,926 -28.87 56,706 -17.88 0.0325
2025-05-14 2025-03-31 13F Westinghouse Air Brake Technologies Equity 929740108 380,793 120,057 46.05 69,057 39.70 0.0406
2025-02-14 2024-12-31 13F Westinghouse Air Brake Technologies Equity 929740108 260,736 -17,993 -6.46 49,433 -2.43 0.0277
2024-11-13 2024-09-30 13F Westinghouse Air Brake Technologies Equity 929740108 278,729 13,683 5.16 50,665 20.95 0.0340
2024-08-13 2024-06-30 13F Westinghouse Air Brake Technologies Equity 929740108 265,046 94,798 55.68 41,891 68.90 0.0341
2024-05-01 2024-03-31 13F Westinghouse Air Brake Technologies Equity 929740108 170,248 88,325 107.81 24,802 138.56 0.0218
2024-02-14 2023-12-31 13F/A-2 Westinghouse Air Brake Technologies Equity 929740108 81,923 5,866 7.71 10,396 28.63 0.0118
2024-02-07 2023-12-31 13F/A-1 Westinghouse Air Brake Technologies Equity 929740108 81,916 5,859 10,395 0.0015
2024-02-07 2023-12-31 13F Westinghouse Air Brake Technologies Equity 929740108 81,916 10,395
2023-11-14 2023-09-30 13F Westinghouse Air Brake Technologies Equity 929740108 76,057 -53,063 -41.10 8,083 -42.92 0.0104
2023-08-09 2023-06-30 13F Westinghouse Air Brake Technologies Equity 929740108 129,120 18,547 16.77 14,161 26.72 0.0177
2023-05-12 2023-03-31 13F WESTINGHOUSE AIR BRAKE TECHNOLOGIES EQUITY 929740108 110,573 -41,677 -27.37 11,175 -26.47 0.0157
2023-02-14 2022-12-31 13F Westinghouse Air Brake Technologies Equity 929740108 152,250 84,859 125.92 15,196 177.20 0.0234
2022-11-16 2022-09-30 13F/A-1 Westinghouse Air Brake Technologies Equity 929740108 67,391 63 0.09 5,482 -0.80 0.0088
2022-11-15 2022-09-30 13F Westinghouse Air Brake Technologies Equity 929740108 67,391 63 5,482 0.0013
2022-08-12 2022-06-30 13F Westinghouse Air Brake Technologies Equity 929740108 67,328 -33,541 -33.25 5,526 -43.03 0.0086
2022-05-18 2022-03-31 13F/A-1 Westinghouse Air Brake Technologies Equity 929740108 100,869 -96,376 -48.86 9,701 -46.61 0.0130
2022-02-09 2021-12-31 13F WESTINGHOUSE AIR BRAKE TECHNOLOGIES EQUITY 929740108 197,245 138,551 236.06 18,168 259.05 0.0259
2021-11-16 2021-09-30 13F/A-1 WESTINGHOUSE AIR BRAKE TECHNOLOGIES EQUITY 929740108 58,694 -21,084 -26.43 5,060 -22.92 0.0072
2021-11-12 2021-09-30 13F WABTEC EQUITY 929740108 65,719 -14,059 4,067 0.0000
2021-08-10 2021-06-30 13F WESTINGHOUSE AIR BRAKE TECHNOLOGIES EQUITY 929740108 79,778 9,259 13.13 6,566 17.61 0.0087
2021-05-07 2021-03-31 13F WESTINGHOUSE AIR BRAKE TECHNOLOGIES EQUITY 929740108 70,519 58,740 498.68 5,582 547.56 0.0082
2021-02-10 2020-12-31 13F WABTEC EQUITY 929740108 11,779 -53,940 -82.08 862 -78.80 0.0016
2020-10-30 2020-09-30 13F WABTEC EQUITY 929740108 65,719 24,423 59.14 4,067 71.06 0.0058
2020-08-06 2020-06-30 13F WABTEC EQUITY 929740108 41,296 -67,320 -61.98 2,377 -54.52 0.0042
2020-05-13 2020-03-31 13F WABTEC EQUITY 929740108 108,616 48,373 80.30 5,228 11.55 0.0107
2020-02-12 2019-12-31 13F WABTEC EQUITY 929740108 60,243 14,721 32.34 4,687 43.26 0.0085
2019-11-07 2019-09-30 13F WABTEC EQUITY 929740108 45,522 -3,869 -7.83 3,271 -7.70 0.0058
2019-07-30 2019-06-30 13F WABTEC EQUITY 929740108 49,391 42,619 629.34 3,544 610.22 0.0071
2019-04-25 2019-03-31 13F WABTEC EQUITY 929740108 6,772 -8,192 -54.74 499 -52.52 0.0011
2019-02-12 2018-12-31 13F WABTEC EQUITY 929740108 14,964 -677 -4.33 1,051 -35.91 0.0025
2018-11-07 2018-09-30 13F WABTEC EQUITY 929740108 15,641 5,552 55.03 1,640 64.99 0.0024
2018-07-25 2018-06-30 13F WABTEC EQUITY 929740108 10,089 1,319 15.04 995 39.41 0.0017
2018-05-11 2018-03-31 13F WABTEC EQUITY 929740108 8,770 -23,906 -73.16 714 -73.20 0.0013
2018-03-05 2017-12-31 13F/A-1 WABTEC EQUITY 929740108 32,676 557 1.73 2,661 9.33 0.0047
2018-02-01 2017-12-31 13F WABTEC EQUITY 929740108 32,676 557 2,661
2017-11-03 2017-09-30 13F WABTEC STOCK 929740108 32,119 -9,648 -23.10 2,433 -36.33 0.0059
2017-08-03 2017-06-30 13F WABTEC STOCK 929740108 41,767 16,197 63.34 3,822 91.62 0.0115
2017-05-03 2017-03-31 13F WABTEC STOCK 929740108 25,570 -1,106 -4.15 1,994 -9.94 0.0053
2017-02-14 2016-12-31 13F WABTEC STOCK 929740108 26,676 17,987 207.01 2,215 212.27 0.0104
2016-10-05 2016-09-30 13F * WABTEC CORP COM STOCK 929740108 8,689 -29,358 -77.16 709 -73.47 0.0029
2016-07-06 2016-06-30 13F * WABTEC CORP COM STOCK 929740108 38,047 17,173 82.27 2,672 61.45 0.0121
2016-04-22 2016-03-31 13F * WABTEC CORP COM STOCK 929740108 20,874 20,283 3,431.98 1,655 3,840.48 0.0070
2016-04-19 2015-12-31 13F/A-1 * WABTEC CORP COM STOCK 929740108 591 -12,070 -95.33 42 -96.23 0.0002
2016-02-10 2015-12-31 13F * WABTEC CORP COM STOCK 929740108 591 42
2015-11-13 2015-09-30 13F * WABTEC CORP COM STOCK 929740108 12,661 11,433 931.03 1,115 868.70 0.0028
2015-08-14 2015-06-30 13F WABTEC CORP COM STOCK 929740108 1,228 -1,785 -59.24 116 -59.79 0.0003
2015-05-15 2015-03-31 13F * WABTEC CORP COM STOCK 929740108 3,013 -8,714 -74.31 286 -71.91 0.0008
2015-03-10 2014-12-31 13F/A-1 * WABTEC CORP COM STOCK 929740108 11,727 -5,571 -32.21 1,019 -27.34 0.0036
2015-02-11 2014-12-31 13F * WABTEC CORP COM STOCK 929740108 11,727 1,019
2014-11-12 2014-09-30 13F WABTEC CORP COM STOCK 929740108 17,298 -4,927 -22.17 1,402 -23.65 0.0012
2014-08-14 2014-06-30 13F/A-1 * WABTEC CORP COM STOCK 929740108 22,225 10,724 93.24 1,836 114.12 0.0017
2014-08-14 2014-06-30 13F WABTEC CORP COM STOCK 929740108 22,225 1,836
2014-05-13 2014-03-31 13F WABTEC STOCK 929740108 11,501 9,909 622.42 857 626.27 0.0007
2014-04-02 2013-12-31 13F/A-1 WABTEC STOCK 929740108 1,592 1,592 118 0.0001
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.