WAB
Westinghouse Air Brake Technologies Corporation · Industrials · Railroads
Momentum inputs (comparable managers):
holder breadth +4.5% ·
share flow -0.1% ·
net new positions +4.3%
· formula
Ownership fragmentation: more holders, smaller aggregate stake
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q2 2025
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q2 2026 | 159 | -3 | 122.29M | $32.96B | +4 | −8 |
| Q1 2026 | 166 | +3 | 123.42M | $30.77B | +6 | −4 |
| Q4 2025 | 162 | -1 | 131.09M | $27.98B | +1 | −1 |
| Q3 2025 | 24 | -1 | 79.07M | $15.85B | n/a | −2 |
| Q2 2025 | 23 | +1 | 73.36M | $15.35B | +1 | n/a |
| Q1 2025 | 19 | +1 | 26.16M | $4.74B | +1 | n/a |
| Q4 2024 | 18 | -2 | 27.71M | $5.25B | n/a | −2 |
| Q3 2024 | 19 | +1 | 19.50M | $3.54B | +1 | n/a |
| Q2 2024 | 18 | n/a | 23.81M | $3.76B | n/a | n/a |
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | The Vanguard Group ✦ (passive) | 19.93M | n/a | $4.17B | 0.1% | n/c | 1 | SEC ↗ ×6 |
| 2 | BlackRock ✦ (passive) | 13.91M | n/a | $2.91B | 0.1% | n/c | 1 | SEC ↗ ×21 |
| 3 | Fidelity (FMR) ✦ | 13.41M | n/a | $2.81B | 0.2% | n/c | 1 | SEC ↗ ×5 |
| 4 | State Street Global Advisors ✦ (passive) | 7.49M | +0.2% | $1.57B | 0.1% | ▲ Add | 3 | SEC ↗ |
| 5 | T. Rowe Price ✦ | 6.61M | +1.3% | $1.38B | 0.2% | ▲ Add | 5 | SEC ↗ ×2 |
| 6 | Geode Capital Management ✦ (passive) | 4.29M | +0.7% | $893.83M | 0.1% | ▲ Add | 5 | SEC ↗ ×2 |
| 7 | Wellington Management ✦ | 3.19M | -12.1% | $667.38M | 0.1% | ▼ Trim | 5 | SEC ↗ ×6 |
| 8 | Norges Bank ✦ (passive) | 1.66M | -9.7% | $347.19M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 9 | AQR Capital Management ✦ | 697.15K | -27.1% | $145.87M | 0.1% | ▼ Trim | 5 | SEC ↗ ×5 |
| 10 | Two Sigma Investments ✦ | 354.95K | +382.2% | $74.31M | 0.1% | ▲ Add | 5 | SEC ↗ |
| 11 | Millennium Management ✦ | 289.04K | +1967.7% | $60.51M | 0.1% | ▲ Add | 5 | SEC ↗ |
| 12 | Citadel Advisors ✦ | 258.20K | +57.7% | $54.05M | 0.0% | ▲ Add | 5 | SEC ↗ ×2 |
| 13 | Arrowstreet Capital ✦ | 232.10K | -49.3% | $48.59M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 14 | Point72 Asset Management ✦ | 213.82K | +433.1% | $44.76M | 0.1% | ▲ Add | 5 | SEC ↗ |
| 15 | Marshall Wace ✦ | 198.65K | New | $41.59M | 0.1% | New | 1 | SEC ↗ ×2 |
| 16 | Duquesne Family Office ✦ | 170.51K | -43.4% | $35.70M | 0.9% | ▼ Trim | 5 | SEC ↗ |
| 17 | Renaissance Technologies ✦ | 167.90K | +6.1% | $35.15M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 18 | Adage Capital Partners ✦ | 122.99K | +98.6% | $25.75M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 19 | Baillie Gifford ✦ | 101.92K | -5.2% | $21.34M | 0.0% | ▼ Trim | 5 | SEC ↗ ×4 |
| 20 | D. E. Shaw & Co. ✦ | 56.15K | +0.5% | $11.76M | 0.0% | ▲ Add | 5 | SEC ↗ ×2 |
| 21 | Gotham Asset Management ✦ | 14.05K | -46.5% | $2.94M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 22 | Fisher Asset Management ✦ | 1.96K | -4.3% | $410,574 | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 23 | Bridgewater Associates ✦ | 1.53K | -93.9% | $320,305 | 0.0% | ▼ Trim | 5 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value: the conviction measure. ✦ = curated manager.
New buyers
| Marshall Wace | $41.59M | 0.1% |
Exited
| No tracked exits this quarter. |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 1,145 holders, 154.94M shares, $35.41B reported. This is a different, older period than the tracked-universe figures above and the two are never mixed.
What else this security's tracked holders most often hold: shared-ownership counts, not fundamental relationships.
Open-market purchases (P)
No open-market insider purchases in our coverage window.
Open-market sales (S)
Officer, Director · 345 sh · $100,855
Officer, Director · 259 sh · $75,465
Officer, Director · 222 sh · $65,303
Officer, Director · 261 sh · $76,562
Officer, Director · 614 sh · $179,511
Officer, Director · 84 sh · $24,611
Officer, Director · 278 sh · $81,042
Officer, Director · 42 sh · $12,064
Officer, Director · 36 sh · $10,373
Officer, Director · 33 sh · $9,569
Awards, exercises and tax withholding are never counted as buys or sales here. Methodology