Westinghouse Air Brake Technologies Corporation
MX ˙ BMV ˙ US9297401088
SecurityMX:WAB / Westinghouse Air Brake Technologies Corporation
InstitutionNomura Holdings Inc
Latest Disclosed Ownership5,844 shares
Latest Disclosed Value $ 1,460,474
Nomura Holdings Inc ownership in WAB / Westinghouse Air Brake Technologies Corporation

On May 15, 2026 - Nomura Holdings Inc filed a 13F-HR form disclosing ownership of 5,844 shares of Westinghouse Air Brake Technologies Corporation (MX:WAB) valued at $1,460,474 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 2,715 shares of Westinghouse Air Brake Technologies Corporation. This represents a change in shares of 115.25% during the quarter.

Nomura Holdings Inc 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.

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Institutional Put/Call Ratios
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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)
2026-05-15 2026-03-31 13F WABTEC COM 929740108 5,844 3,129 115.25 1,460 152.16 0.0030
2026-02-17 2025-12-31 13F WABTEC COM 929740108 2,715 -1,778 -39.57 580 -35.67 0.0008
2025-11-14 2025-09-30 13F WABTEC COM 929740108 4,493 3,410 314.87 901 298.23 0.0014
2025-08-14 2025-06-30 13F WABTEC COM 929740108 1,083 -4,319 -79.95 227 -76.92 0.0004
2025-05-15 2025-03-31 13F WABTEC COM 929740108 5,402 -28,690 -84.15 980 -84.85 0.0018
2025-02-14 2024-12-31 13F WABTEC COM 929740108 34,092 30,298 798.58 6,464 838.03 0.0087
2025-01-13 2024-09-30 13F/A-1 WABTEC COM 929740108 3,794 -43,525 -91.98 690 -90.79 0.0016
2024-11-14 2024-09-30 13F WABTEC COM 929740108 3,794 -43,525 690 0.0016
2024-08-14 2024-06-30 13F WABTEC COM 929740108 47,319 45,888 3,206.71 7,479 3,495.19 0.0143
2024-05-15 2024-03-31 13F WABTEC COM 929740108 1,431 -2,173 -60.29 208 -54.49 0.0005
2024-03-27 2023-12-31 13F/A-1 WABTEC COM 929740108 3,604 3,604 457 0.0012
2024-02-14 2023-12-31 13F WABTEC COM 929740108 3,604 3,604 457 0.0009
2023-05-15 2023-03-31 13F WABTEC CMN 929740108 0 -34 -100.00 0 0.0000
2023-02-15 2022-12-31 13F/A-1 WABTEC CMN 929740108 34 34 0 0.0000
2022-11-15 2022-09-30 13F WABTEC CMN 929740108 0 -259,284 -100.00 0 -100.00
2022-08-17 2022-06-30 13F/A-1 WABTEC CMN 929740108 259,284 254,683 5,535.38 21,528 4,803.87 0.0741
2022-08-15 2022-06-30 13F WABTEC CMN 929740108 259,284 254,683 21,528 0.0600
2022-05-18 2022-03-31 13F WABTEC CMN 929740108 4,601 -62,797 -93.17 439 -92.93 0.0013
2022-02-14 2021-12-31 13F WABTEC CMN 929740108 67,398 56,832 537.88 6,212 564.39 0.0158
2021-11-15 2021-09-30 13F WABTEC CMN 929740108 10,566 6,111 137.17 935 154.77 0.0023
2021-08-16 2021-06-30 13F WABTEC CMN 929740108 4,455 4,455 367 0.0009
2021-05-17 2021-03-31 13F WABTEC CMN 929740108 0 -23,292 -100.00 0 -100.00
2021-02-16 2020-12-31 13F WABTEC CMN 929740108 23,292 23,166 18,385.71 2 -88.89 0.0028
2019-11-14 2019-09-30 13F WABTEC CMN 929740108 126 126 -99.46 9 800.00 0.0000
2019-08-14 2019-06-30 13F WABTEC CMN 929740108 0 -43,802 -100.00 0 -100.00
2019-05-14 2019-03-31 13F WABTEC CMN 929740108 43,802 1,320 3.11 3,268 9.96 0.0138
2019-02-14 2018-12-31 13F WABTEC CMN 929740108 42,482 26,982 174.08 2,972 84.48 0.0111
2018-11-14 2018-09-30 13F WABTEC CMN 929740108 15,500 15,500 -63.51 1,611 -45.79 0.0057
2016-09-02 2016-06-30 13F/A-1 WABTEC CMN 929740108 0 -2,854 -100.00 0 -100.00
2016-05-16 2016-03-31 13F WABTEC CMN 929740108 2,854 -10,699 -78.94 226 -76.51 0.0008
2016-02-12 2015-12-31 13F WABTEC CMN 929740108 13,553 13,553 374.88 962 325.66 0.0027
2015-11-16 2015-09-30 13F WABTEC CMN 929740108 0 -21,415 -100.00 0 -100.00
2015-08-14 2015-06-30 13F WABTEC CMN 929740108 21,415 21,415 0.00 2,001 0.0056
2015-02-17 2014-12-31 13F WABTEC CMN 929740108 0 -4,470 -100.00 0 -100.00
2014-11-14 2014-09-30 13F WABTEC CMN 929740108 4,470 -277 -5.84 363 -7.16 0.0010
2014-08-13 2014-06-30 13F WABTEC CMN 929740108 4,747 -5,008 -51.34 391 -48.48 0.0001
2014-05-14 2014-03-31 13F WABTEC CMN 929740108 9,755 -5,534 -36.20 759 -33.07 0.0002
2014-02-14 2013-12-31 13F WABTEC CMN 929740108 15,289 1,166 8.26 1,134 27.70 0.0052
2013-11-14 2013-09-30 13F WABTEC CMN 929740108 14,123 8,680 159.47 888 183.71 0.0053
2013-08-15 2013-06-30 13F WABTEC CMN 929740108 5,443 1,864 52.08 313 -13.77 0.0025
2013-08-16 2013-03-31 13F/A-2 WABTEC CMN 929740108 3,579 464 14.90 363 33.95 0.0038
2013-08-16 2012-12-31 13F/A-1 WABTEC CMN 929740108 3,115 3,115 271 0.0030
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
(%)
2025-01-13 2024-09-30 13F/A WABTEC COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2024-11-14 2024-09-30 13F WABTEC COM Call 0 0 n/a n/a n/a
2024-08-14 2024-06-30 13F WABTEC COM Call 40,300 6,369 n/a n/a n/a
2023-08-14 2023-06-30 13F WABTEC COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2023-05-15 2023-03-31 13F WABTEC COM Call 10,500 -92.02 1,061 8,061.54 n/a n/a n/a
2023-02-15 2022-12-31 13F/A WABTEC CMN Call 131,600 -20.10 13 -99.90 n/a n/a n/a
2022-11-15 2022-09-30 13F WABTEC CMN Call 164,700 3,129.41 13,416 3,071.63 n/a n/a n/a
2022-08-17 2022-06-30 13F/A WABTEC CMN Call 5,100 -89.80 423 -91.14 n/a n/a n/a
2022-08-15 2022-06-30 13F WABTEC CMN Call 5,100 423 n/a n/a n/a
2022-05-18 2022-03-31 13F WABTEC CMN Call 50,000 -93.34 4,773 -93.10 n/a n/a n/a
2022-02-14 2021-12-31 13F WABTEC CMN Call 750,400 69,162 n/a n/a n/a
2020-02-14 2019-12-31 13F WABTEC CMN Call 0 -100.00 0 -100.00 n/a n/a n/a
2019-11-14 2019-09-30 13F WABTEC CMN Call 52,600 3,611 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
(%)
2020-02-14 2019-12-31 13F WABTEC CMN Put 0 -100.00 0 -100.00 n/a n/a n/a
2019-11-14 2019-09-30 13F WABTEC CMN Put 45,400 3,116 n/a n/a n/a
2019-08-14 2019-06-30 13F WABTEC CMN Put 0 -100.00 0 -100.00 n/a n/a n/a
2019-05-14 2019-03-31 13F WABTEC CMN Put 46,700 -25.64 3,484 -20.71 n/a n/a n/a
2019-02-14 2018-12-31 13F WABTEC CMN Put 62,800 153.23 4,394 70.44 n/a n/a n/a
2018-11-14 2018-09-30 13F WABTEC CMN Put 24,800 175.56 2,578 268.29 n/a n/a n/a
2014-05-14 2014-03-31 13F WABTEC CMN Put 9,000 700 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.