Westinghouse Air Brake Technologies Corporation
MX ˙ BMV ˙ US9297401088
SecurityMX:WAB / Westinghouse Air Brake Technologies Corporation
InstitutionNorthwestern Mutual Wealth Management Co
Latest Disclosed Ownership1,567 shares
Latest Disclosed Value $ 391,784
Northwestern Mutual Wealth Management Co reports 12.01% increase in ownership of WAB / Westinghouse Air Brake Technologies Corporation

On May 7, 2026 - Northwestern Mutual Wealth Management Co filed a 13F-HR form disclosing ownership of 1,567 shares of Westinghouse Air Brake Technologies Corporation (MX:WAB) valued at $391,784 USD as of March 31, 2026. The entity filed a previous 13F-HR/A on February 10, 2026 disclosing 1,399 shares of Westinghouse Air Brake Technologies Corporation. This represents a change in shares of 12.01% 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.

Upgrade to unlock premium data and export to Excel .

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)
2026-05-07 2026-03-31 13F WABTEC COM 929740108 1,567 168 12.01 392 31.21 0.0002
2026-02-10 2025-12-31 13F/A-1 WABTEC COM 929740108 1,399 70 5.27 299 12.03 0.0002
2026-02-05 2025-12-31 13F WABTEC COM 929740108 323,936 322,607 51,072 0.0323
2025-11-14 2025-09-30 13F WABTEC COM 929740108 1,329 356 36.59 267 31.03 0.0002
2025-08-13 2025-06-30 13F WABTEC COM 929740108 973 59 6.46 204 23.03 0.0001
2025-05-14 2025-03-31 13F WABTEC COM 929740108 914 85 10.25 166 5.10 0.0001
2025-02-11 2024-12-31 13F WABTEC COM 929740108 829 283 51.83 157 58.59 0.0001
2024-11-12 2024-09-30 13F WABTEC COM 929740108 546 -210 -27.78 99 -16.81 0.0001
2024-08-16 2024-06-30 13F WABTEC COM 929740108 756 456 152.00 119 176.74 0.0001
2024-05-15 2024-03-31 13F WABTEC COM 929740108 300 52 20.97 44 38.71 0.0000
2024-02-13 2023-12-31 13F WABTEC COM 929740108 248 -2 -0.80 31 19.23 0.0000
2023-11-14 2023-09-30 13F WABTEC COM 929740108 250 -6 -2.34 27 -7.14 0.0000
2023-08-14 2023-06-30 13F WABTEC COM 929740108 256 -265 -50.86 28 -46.15 0.0000
2023-05-15 2023-03-31 13F WABTEC COM 929740108 521 224 75.42 53 79.31 0.0001
2023-02-21 2022-12-31 13F WABTEC COM 929740108 297 -1,282 -81.19 30 -77.34 0.0000
2022-11-14 2022-09-30 13F WABTEC COM 929740108 1,579 357 29.21 128 28.00 0.0002
2022-08-04 2022-06-30 13F WABTEC COM 929740108 1,222 85 7.48 100 -8.26 0.0002
2022-05-09 2022-03-31 13F WABTEC COM 929740108 1,137 -10,576 -90.29 109 -89.89 0.0002
2022-02-03 2021-12-31 13F WABTEC COM 929740108 11,713 10,949 1,433.12 1,078 1,533.33 0.0018
2021-11-15 2021-09-30 13F WABTEC COM 929740108 764 -44 -5.45 66 0.00 0.0001
2021-08-13 2021-06-30 13F WABTEC COM 929740108 808 217 36.72 66 43.48 0.0001
2021-05-14 2021-03-31 13F WABTEC COM 929740108 591 -31 -4.98 46 2.22 0.0001
2021-02-12 2020-12-31 13F WABTEC COM 929740108 622 10 1.63 45 21.62 0.0001
2020-11-13 2020-09-30 13F WABTEC COM 929740108 612 111 22.16 37 27.59 0.0001
2020-08-14 2020-06-30 13F WABTEC COM 929740108 501 -273 -35.27 29 -23.68 0.0001
2020-05-08 2020-03-31 13F WABTEC COM 929740108 774 -871 -52.95 38 -70.31 0.0001
2020-02-13 2019-12-31 13F WABTEC COM 929740108 1,645 151 10.11 128 18.52 0.0004
2019-11-12 2019-09-30 13F WABTEC COM 929740108 1,494 -982 -39.66 108 -38.98 0.0004
2019-08-12 2019-06-30 13F WABTEC COM 929740108 2,476 -596 -19.40 177 -22.03 0.0007
2019-05-10 2019-03-31 13F WABTEC COM 929740108 3,072 2,865 1,384.06 227 1,413.33 0.0010
2019-02-12 2018-12-31 13F WABTEC COM 929740108 207 0 0.00 15 -31.82 0.0001
2018-11-01 2018-09-30 13F WABTEC COM 929740108 207 -1,186 -85.14 22 -83.94 0.0001
2018-08-10 2018-06-30 13F WABTEC COM 929740108 1,393 1,140 450.59 137 552.38 0.0008
2018-05-14 2018-03-31 13F WABTEC COM 929740108 253 17 7.20 21 10.53 0.0001
2018-01-31 2017-12-31 13F WABTEC COM 929740108 236 0 0.00 19 5.56 0.0001
2017-11-07 2017-09-30 13F WABTEC COM 929740108 236 53 28.96 18 5.88 0.0001
2017-08-10 2017-06-30 13F WABTEC COM 929740108 183 0 0.00 17 21.43 0.0001
2017-05-09 2017-03-31 13F WABTEC COM 929740108 183 -666 -78.45 14 -80.00 0.0001
2017-02-15 2016-12-31 13F WABTEC COM 929740108 849 109 14.73 70 16.67 0.0008
2016-11-14 2016-09-30 13F WABTEC COM 929740108 740 0 0.00 60 17.65 0.0009
2016-08-29 2016-06-30 13F WABTEC COM 929740108 740 -30 -3.90 51 -17.74 0.0007
2016-05-16 2016-03-31 13F WABTEC COM 929740108 770 559 264.93 62 313.33 0.0010
2016-02-16 2015-12-31 13F WABTEC COM 929740108 211 17 8.76 15 -11.76 0.0003
2015-11-16 2015-09-30 13F WABTEC COM 929740108 194 5 2.65 17 -5.56 0.0004
2015-09-30 2015-06-30 13F/A-1 WABTEC COM 929740108 189 182 2,600.00 18 1,700.00 0.0005
2015-08-14 2015-06-30 13F WABTEC COM 929740108 19 3
2015-05-15 2015-03-31 13F WABTEC COM 929740108 7 -375 -98.17 1 -96.97 0.0000
2015-02-13 2014-12-31 13F WABTEC COM 929740108 382 284 289.80 33 312.50 0.0010
2014-11-14 2014-09-30 13F WABTEC COM 929740108 98 0 0.00 8 0.00 0.0003
2014-08-05 2014-06-30 13F WABTEC COM 929740108 98 -50 -33.78 8 -27.27 0.0003
2014-05-15 2014-03-31 13F WABTEC COM 929740108 148 50 51.02 11 57.14 0.0005
2014-02-14 2013-12-31 13F WABTEC COM 929740108 98 54 122.73 7 133.33 0.0003
2013-11-14 2013-09-30 13F WABTEC COM 929740108 44 -48 -52.17 3 -40.00 0.0002
2013-08-21 2013-06-30 13F/A-1 WABTEC COM 929740108 92 92 5 0.0003
2013-08-14 2013-06-30 13F WABTEC COM 929740108 56,650 3,027 0.0333
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.