WAB
Westinghouse Air Brake Technologies Corporation · Industrials · Railroads
Momentum inputs (comparable managers):
holder breadth +5.6% ·
share flow -18.1% ·
net new positions +5.3%
— formula
Ownership fragmentation — more holders, smaller aggregate stake
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q3 2024
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q2 2026 | 161 | -3 | 123.89M | $33.39B | +4 | −6 |
| 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 | — | −2 |
| Q2 2025 | 23 | +1 | 73.36M | $15.35B | +1 | — |
| Q1 2025 | 19 | +1 | 26.16M | $4.74B | +1 | — |
| Q4 2024 | 18 | -2 | 27.71M | $5.25B | — | −2 |
| Q3 2024 | 19 | +1 | 19.50M | $3.54B | +1 | — |
| Q2 2024 | 18 | — | 23.81M | $3.76B | — | — |
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | T. Rowe Price ✦ | 6.34M | -24.7% | $1.15B | 0.1% | ▼ Trim | 2 | SEC ↗ |
| 2 | T. Rowe Price ✦ | 6.34M | -24.7% | $1.15B | 0.1% | ▼ Trim | 2 | SEC ↗ |
| 3 | Geode Capital Management ✦ (passive) | 4.08M | +0.5% | $739.84M | 0.1% | ▲ Add | 2 | SEC ↗ |
| 4 | Geode Capital Management ✦ (passive) | 4.08M | +0.5% | $739.84M | 0.1% | ▲ Add | 2 | SEC ↗ |
| 5 | Wellington Management ✦ | 3.79M | -27.2% | $688.18M | 0.1% | ▼ Trim | 2 | SEC ↗ |
| 6 | Wellington Management ✦ | 3.79M | -27.2% | $688.18M | 0.1% | ▼ Trim | 2 | SEC ↗ |
| 7 | Wellington Management ✦ | 3.79M | -27.2% | $688.18M | 0.1% | ▼ Trim | 2 | SEC ↗ |
| 8 | Wellington Management ✦ | 3.79M | -27.2% | $688.18M | 0.1% | ▼ Trim | 2 | SEC ↗ |
| 9 | Wellington Management ✦ | 3.79M | -27.2% | $688.18M | 0.1% | ▼ Trim | 2 | SEC ↗ |
| 10 | Wellington Management ✦ | 3.79M | -27.2% | $688.18M | 0.1% | ▼ Trim | 2 | SEC ↗ |
| 11 | Wellington Management ✦ | 3.79M | -27.2% | $688.18M | 0.1% | ▼ Trim | 2 | SEC ↗ |
| 12 | Norges Bank ✦ (passive) | 1.89M | +1.2% | $344.28M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 13 | AQR Capital Management ✦ | 716.77K | +45.6% | $130.29M | 0.2% | ▲ Add | 2 | SEC ↗ |
| 14 | AQR Capital Management ✦ | 716.77K | +45.6% | $130.29M | 0.2% | ▲ Add | 2 | SEC ↗ |
| 15 | AQR Capital Management ✦ | 716.77K | +45.6% | $130.29M | 0.2% | ▲ Add | 2 | SEC ↗ |
| 16 | AQR Capital Management ✦ | 716.77K | +45.6% | $130.29M | 0.2% | ▲ Add | 2 | SEC ↗ |
| 17 | AQR Capital Management ✦ | 716.77K | +45.6% | $130.29M | 0.2% | ▲ Add | 2 | SEC ↗ |
| 18 | Two Sigma Investments ✦ | 674.18K | -13.6% | $122.55M | 0.3% | ▼ Trim | 2 | SEC ↗ |
| 19 | Arrowstreet Capital ✦ | 593.96K | -8.8% | $107.96M | 0.1% | ▼ Trim | 2 | SEC ↗ |
| 20 | Renaissance Technologies ✦ | 388.39K | +47.0% | $70.60M | 0.1% | ▲ Add | 2 | SEC ↗ |
| 21 | Duquesne Family Office ✦ | 179.65K | +19.2% | $32.66M | 1.1% | ▲ Add | 2 | SEC ↗ |
| 22 | Point72 Asset Management ✦ | 173.92K | -31.6% | $31.61M | 0.1% | ▼ Trim | 2 | SEC ↗ |
| 23 | D. E. Shaw & Co. ✦ | 166.87K | +2.2% | $30.33M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 24 | D. E. Shaw & Co. ✦ | 166.87K | +2.2% | $30.33M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 25 | Millennium Management ✦ | 162.87K | -78.3% | $29.60M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 26 | Baillie Gifford ✦ | 162.39K | -4.1% | $29.52M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 27 | Baillie Gifford ✦ | 162.39K | -4.1% | $29.52M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 28 | Baillie Gifford ✦ | 162.39K | -4.1% | $29.52M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 29 | Marshall Wace ✦ | 94.52K | New | $17.18M | 0.0% | New | 1 | SEC ↗ |
| 30 | Adage Capital Partners ✦ | 52.35K | -8.9% | $9.52M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 31 | Citadel Advisors ✦ | 22.90K | -94.8% | $4.16M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 32 | Gotham Asset Management ✦ | 6.80K | -84.6% | $1.24M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 33 | Fisher Asset Management ✦ | 5.51K | -9.4% | $1.00M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 34 | Bridgewater Associates ✦ | 2.00K | -94.9% | $362,631 | 0.0% | ▼ Trim | 2 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value — the conviction measure. ✦ = curated manager.
New buyers
| Marshall Wace | $17.18M | 0.0% |
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 · 2.91K sh · $864,427
Officer · 9 sh · $2,666
Officer · 2.96K sh · $868,334
Officer · 288 sh · $84,627
Awards, exercises and tax withholding are never counted as buys or sales here. Methodology