Westinghouse Air Brake Technologies Corporation
MX ˙ BMV ˙ US9297401088
SecurityMX:WAB / Westinghouse Air Brake Technologies Corporation
InstitutionJpmorgan Chase & Co
Latest Disclosed Ownership1,381,399 shares
Latest Disclosed Value $ 327,903,301
Jpmorgan Chase & Co ownership in WAB / Westinghouse Air Brake Technologies Corporation

On May 13, 2026 - Jpmorgan Chase & Co filed a 13F-HR/A form disclosing ownership of 1,381,399 shares of Westinghouse Air Brake Technologies Corporation (MX:WAB) valued at $327,903,301 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 11, 2026 disclosing 973,757 shares of Westinghouse Air Brake Technologies Corporation. This represents a change in shares of 41.86% during the quarter.

Jpmorgan Chase & Co has a history of taking positions in derivatives of the underlying security (WAB) in the form of stock options. The firm currently holds call options representing 0 of underlying shares valued at $0 USD and put options representing 0 of underlying shares valued at $0 USD .

Note: prior versions of this page mistakenly stated that the share values represented the number of options, not the number of underlying shares. For more information on the data backing these reports, please see the SEC document Frequently Asked Questions About Form 13F.

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 .

Institutional Put/Call Ratios
(Premium Subscription Required)

In addition to reporting standard equity and debt issues, institutions with more than 100MM assets under management must also disclose their put and call option holdings. Since put options generally indicate negative sentiment, and call options indicate positive sentiment, we can get a sense of the overall institutional sentiment by plotting the ratio of puts to calls. The chart to the right plots the historical put/call ratio for this instrument.

Using Put/Call Ratio as an indicator of investor sentiment overcomes one of the key deficiencies of using total institutional ownership, which is that a significant amount of assets under management are invested passively to track indices. Passively-managed funds do not typically buy options, so the put/call ratio indicator more closely tracks the sentiment of actively-managed funds.

MX:WAB / Westinghouse Air Brake Technologies Corporation Historical Put/Call Ratio
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)
2026-05-13 2026-03-31 13F/A-1 WABTEC COMMON 929740108 1,381,399 407,642 41.86 327,903 57.76 0.0023
2026-05-13 2026-03-31 13F WABTEC COMMON 929740108 0 -100.00 0
2026-02-11 2025-12-31 13F WABTEC COMMON 929740108 973,757 16,842 1.76 207,849 8.35 0.0130
2025-11-26 2025-09-30 13F/A-1 WABTEC COMMON 929740108 956,915 -570,487 -37.35 191,834 -40.01 0.0115
2025-11-07 2025-09-30 13F WABTEC COMMON 929740108 956,915 -570,487 191,834 0.0012
2025-08-12 2025-06-30 13F WABTEC COMMON 929740108 1,527,402 -210,890 -12.13 319,763 1.43 0.0209
2025-05-12 2025-03-31 13F WABTEC COMMON 929740108 1,738,292 428,096 32.67 315,239 26.91 0.0230
2025-02-12 2024-12-31 13F WABTEC COMMON 929740108 1,310,196 -203,866 -13.46 248,400 -9.74 0.0185
2024-12-26 2024-09-30 13F/A-1 WABTEC COMMON 929740108 1,514,062 72,850 5.05 275,211 20.82 0.0209
2024-11-08 2024-09-30 13F WABTEC COMMON 929740108 1,514,062 72,850 275,211 0.0210
2024-12-26 2024-06-30 13F/A-1 WABTEC COMMON 929740108 1,441,212 219,485 17.97 227,784 27.98 0.0187
2024-08-12 2024-06-30 13F WABTEC COMMON 929740108 1,441,212 219,485 227,784 0.0187
2024-12-26 2024-03-31 13F/A-1 WABTEC COMMON 929740108 1,221,727 827,599 209.98 177,981 255.86 0.0150
2024-05-10 2024-03-31 13F WABTEC COMMON 929740108 1,221,727 827,599 177,981 0.0151
2024-12-26 2023-12-31 13F/A-1 WABTEC COMMON 929740108 394,128 -129,948 -24.80 50,015 -10.20 0.0048
2024-02-12 2023-12-31 13F WABTEC COMMON 929740108 394,128 -129,948 50,015 0.0048
2023-11-14 2023-09-30 13F WABTEC COM 929740108 524,076 17,788 3.51 55,694 0.30 0.0061
2023-08-11 2023-06-30 13F WABTEC COMMON 929740108 506,288 164,118 47.96 55,525 60.58 0.0060
2023-05-18 2023-03-31 13F/A-1 WABTEC COMMON 929740108 342,170 82,321 31.68 34,578 138,212.00 0.0042
2023-05-11 2023-03-31 13F WABTEC COMMON 929740108 256,564 -3,285 34,579 0.0005
2023-02-13 2022-12-31 13F WABTEC COMMON 929740108 259,849 31,995 14.04 26 -99.87 0.0034
2022-11-14 2022-09-30 13F WABTEC COMMON 929740108 227,854 -3,782 -1.63 18,536 -2.50 0.0027
2022-08-11 2022-06-30 13F WABTEC COMMON 929740108 231,636 23,250 11.16 19,012 -5.14 0.0026
2022-05-11 2022-03-31 13F WABTEC COMMON 929740108 208,386 64,104 44.43 20,043 50.82 0.0024
2022-02-11 2021-12-31 13F/A-1 WABTEC COMMON 929740108 144,282 -8,550 -5.59 13,289 0.86 0.0015
2022-02-10 2021-12-31 13F WABTEC COMMON 929740108 144,282 -8,550 13,289 0.0015
2021-11-12 2021-09-30 13F WABTEC COMMON 929740108 152,832 -109,553 -41.75 13,176 -38.99 0.0016
2021-08-12 2021-06-30 13F WABTEC COMMON 929740108 262,385 -246,469 -48.44 21,596 -46.39 0.0026
2021-05-12 2021-03-31 13F WABTEC COMMON 929740108 508,854 318,581 167.43 40,280 189.22 0.0054
2021-02-19 2020-12-31 13F/A-1 WABTEC COMMON 929740108 190,273 -134,486 -41.41 13,927 -31.35 0.0020
2021-02-11 2020-12-31 13F WABTEC COMMON 929740108 190,273 -134,486 13,927 344.4246
2020-11-12 2020-09-30 13F/A-1 WABTEC COMMON 929740108 324,759 166,507 105.22 20,286 122.68 0.0034
2020-11-12 2020-09-30 13F WABTEC COMMON 929740108 324,759 20,286
2020-08-11 2020-06-30 13F WABTEC COMMON 929740108 158,252 -3,449 -2.13 9,110 17.05 0.0018
2020-05-12 2020-03-31 13F WABTEC COMMON 929740108 161,701 1,723 1.08 7,783 -37.47 0.0018
2020-02-11 2019-12-31 13F WABTEC COMMON 929740108 159,978 -3,875 -2.36 12,446 5.71 0.0023
2019-11-12 2019-09-30 13F WABTEC COMMON 929740108 163,853 27,630 20.28 11,774 25.16 0.0023
2019-08-07 2019-06-30 13F WABTEC COMMON 929740108 136,223 31,831 30.49 9,407 22.23 0.0018
2019-05-07 2019-03-31 13F WABTEC COMMON 929740108 104,392 -43,511 -29.42 7,696 -25.93 0.0016
2019-02-11 2018-12-31 13F WABTEC COMMON 929740108 147,903 97,181 191.60 10,390 95.34 0.0024
2018-11-13 2018-09-30 13F/A-1 WABTEC COMMON 929740108 50,722 4,111 8.82 5,319 15.76 0.0010
2018-11-07 2018-09-30 13F WABTEC COMMON 929740108 50,722 4,111 5,319
2018-08-14 2018-06-30 13F WABTEC COMMON 929740108 46,611 -1,425 -2.97 4,595 17.52 0.0009
2018-05-10 2018-03-31 13F WABTEC COMMON 929740108 48,036 -810 -1.66 3,910 -1.71 0.0008
2018-02-13 2017-12-31 13F WABTEC COMMON 929740108 48,846 -490,505 -90.94 3,978 -90.26 0.0008
2017-11-09 2017-09-30 13F WABTEC COMMON 929740108 539,351 20,819 4.01 40,852 -13.90 0.0090
2017-08-09 2017-06-30 13F WABTEC COMMON 929740108 518,532 492,982 1,929.48 47,445 2,280.58 0.0108
2017-05-10 2017-03-31 13F WABTEC COMMON 929740108 25,550 -13,739 -34.97 1,993 -38.90 0.0005
2017-02-06 2016-12-31 13F WABTEC COMMON 929740108 39,289 2,253 6.08 3,262 7.87 0.0008
2016-11-04 2016-09-30 13F WABTEC COMMON 929740108 37,036 -84,017 -69.41 3,024 -64.43 0.0007
2016-08-08 2016-06-30 13F WABTEC COMMON 929740108 121,053 43,618 56.33 8,501 38.45 0.0021
2016-05-10 2016-03-31 13F WABTEC COMMON 929740108 77,435 -32,586 -29.62 6,140 -21.52 0.0016
2016-02-12 2015-12-31 13F WABTEC COMMON 929740108 110,021 -159,442 -59.17 7,824 -67.02 0.0020
2015-11-13 2015-09-30 13F WABTEC COMMON 929740108 269,463 -44,639 -14.21 23,724 -19.86 0.0063
2015-08-14 2015-06-30 13F WABTEC COMMON 929740108 314,102 170,473 118.69 29,603 116.94 0.0070
2015-05-15 2015-03-31 13F WABTEC COMMON 929740108 143,629 -97,111 -40.34 13,646 -34.76 0.0031
2015-02-13 2014-12-31 13F WABTEC COMMON 929740108 240,740 -23,278 -8.82 20,916 -2.25 0.0048
2014-12-08 2014-09-30 13F/A-1 WABTEC COMMON 929740108 264,018 -30,688 -10.41 21,397 -12.09 0.0051
2014-11-14 2014-09-30 13F WABTEC COMMON 929740108 264,018 21,397
2014-09-03 2014-06-30 13F/A-1 WABTEC COMMON 929740108 294,706 21,437 7.84 24,339 14.92 0.0062
2014-08-14 2014-06-30 13F WABTEC COMMON 929740108 294,706 24,339
2014-05-15 2014-03-31 13F WABTEC COMMON 929740108 273,269 35,608 14.98 21,179 19.99 0.0058
2014-02-26 2013-12-31 13F/A-1 WABTEC COMMON 929740108 237,661 -94,207 -28.39 17,651 -15.40 0.0050
2014-02-13 2013-12-31 13F WABTEC COMMON 929740108 237,661 17,651
2013-10-31 2013-09-30 13F WABTEC COMMON 929740108 331,868 -781,192 -70.18 20,864 -64.92 0.0062
2013-08-13 2013-06-30 13F WABTEC COMMON 929740108 1,113,060 1,113,060 59,471 0.0190
Disclosed Call Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share
Price
Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2019-11-12 2019-09-30 13F WABTEC OPTION Call 0 -100.00 0 -100.00 n/a n/a n/a
2019-08-07 2019-06-30 13F WABTEC OPTION Call 250,000 -50.00 17,268 -53.15 n/a n/a n/a
2019-05-07 2019-03-31 13F WABTEC OPTION Call 500,000 36,860 n/a n/a n/a
Disclosed Put Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share Price Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2020-02-11 2019-12-31 13F WABTEC OPTION Put 0 -100.00 0 -100.00 n/a n/a n/a
2019-11-12 2019-09-30 13F WABTEC OPTION Put 200 -99.80 14 -99.80 n/a n/a n/a
2019-08-07 2019-06-30 13F WABTEC OPTION Put 100,000 -33.33 6,907 -37.54 n/a n/a n/a
2019-05-07 2019-03-31 13F WABTEC OPTION Put 150,000 11,058 n/a n/a n/a
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.