Westinghouse Air Brake Technologies (WAB)

As of 30 September 2026, short interest in WAB is 3,538,216 shares, up 211,320 shares over the last month. Over the last 48 readings it ranged from 1,572,032 shares (30 May 2025) to 3,836,310 shares (31 July 2026). At the reported average volume of 857K shares a day that is 4.1 days to cover.

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As of 9 October 2026, the short share of WAB volume is 41.1%, up 7.9 points over the last five sessions. Over the last 30 readings it ranged from 33.0% (1 October 2026) to 75.7% (24 September 2026). The latest reading is 15.1 points below the 30-session average of 56.2%, on 270K shares reported.

As of 4 September 2026, the fails-to-deliver balance in WAB is 3,724 shares, up 3,606 shares over the last settlement date. Over the last 30 readings it ranged from 2 shares (31 March 2026) to 62,729 shares (31 October 2025). The latest reading sits at the bottom of that range.

Insiders at WAB reported 37 open-market sells worth $7.4M in the last 90 days and no open-market buys. Latest filing: Santana Rafael (President and CEO) on 2026-10-06.

Form 4 filings are due within two business days of the trade. Insiders sell for many reasons that say nothing about the company; open-market buys are rarer.

23 Form 144 notices on file for WAB worth $21.1M at the prices reported; 6 in the last 90 days worth $5.4M. Latest: ROGERIO GUIMARAES MENDONCA filed on 2026-08-21 to sell 2,910 shares ($864K) from 2026-08-21.

3 holders report 5% or more of WAB in their latest filing, all on Schedule 13G (passive). The largest reported stake is FMR LLC at 12.7% of the class (21,617,228 shares), filed 2026-08-06 for an event on 2026-06-30.

8 of the 30 tracked managers held WAB at their latest 13F, $478.0M in total at quarter-end prices. AQR Capital Management is the largest at $369.6M (0.1% of its portfolio) as of 2026-06-30. Over the prior quarter 6 added shares and 2 cut.

Only the 30 tracked managers on the funds hub; a 13F reports long positions in US listed stock at quarter end, 45 days late, and says nothing about shorts or positions sold since.

In Q2 FY 2026 (quarter ended 2026-06-30) Westinghouse Air Brake Technologies reported revenue of $3.18B, up 17.5% from the same quarter a year earlier, and net income of $395.0M (2.33 diluted EPS). In FY 2025 it generated $1.76B of operating cash flow and spent $223.0M on buybacks and $173.0M on dividends.

Quarterly, last 8 quarters

Fiscal years, with buybacks and dividends

Quarters are the three-month figures the company reports; a fourth quarter marked derived is the fiscal year less the three reported quarters, since companies report it only inside the 10-K. Fiscal years are the annual figures. Buybacks are the cash the company paid to repurchase its common stock in the year, not the amount authorized. Balance sheet lines are as of 2026-06-30; shares outstanding as of 2026-07-17 from the cover page.