Security record · archived quarter
WAB
Westinghouse Air Brake Technologies Corporation · Industrials · Railroads
23Tracked holders
+1Δ holders
73.36MShares held
$15.35BReported value
+1New positions
−0Exits
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
Ownership over time
| 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 | — | — |
Who holds it · Q2 2025
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | The Vanguard Group ✦ (passive) | 19.93M | — | $4.17B | 0.1% | n/c | 1 | SEC ↗ |
| 2 | The Vanguard Group ✦ (passive) | 19.93M | — | $4.17B | 0.1% | n/c | 1 | SEC ↗ |
| 3 | The Vanguard Group ✦ (passive) | 19.93M | — | $4.17B | 0.1% | n/c | 1 | SEC ↗ |
| 4 | The Vanguard Group ✦ (passive) | 19.93M | — | $4.17B | 0.1% | n/c | 1 | SEC ↗ |
| 5 | The Vanguard Group ✦ (passive) | 19.93M | — | $4.17B | 0.1% | n/c | 1 | SEC ↗ |
| 6 | The Vanguard Group ✦ (passive) | 19.93M | — | $4.17B | 0.1% | n/c | 1 | SEC ↗ |
| 7 | BlackRock ✦ (passive) | 13.91M | — | $2.91B | 0.1% | n/c | 1 | SEC ↗ |
| 8 | BlackRock ✦ (passive) | 13.91M | — | $2.91B | 0.1% | n/c | 1 | SEC ↗ |
| 9 | BlackRock ✦ (passive) | 13.91M | — | $2.91B | 0.1% | n/c | 1 | SEC ↗ |
| 10 | BlackRock ✦ (passive) | 13.91M | — | $2.91B | 0.1% | n/c | 1 | SEC ↗ |
| 11 | BlackRock ✦ (passive) | 13.91M | — | $2.91B | 0.1% | n/c | 1 | SEC ↗ |
| 12 | BlackRock ✦ (passive) | 13.91M | — | $2.91B | 0.1% | n/c | 1 | SEC ↗ |
| 13 | BlackRock ✦ (passive) | 13.91M | — | $2.91B | 0.1% | n/c | 1 | SEC ↗ |
| 14 | BlackRock ✦ (passive) | 13.91M | — | $2.91B | 0.1% | n/c | 1 | SEC ↗ |
| 15 | BlackRock ✦ (passive) | 13.91M | — | $2.91B | 0.1% | n/c | 1 | SEC ↗ |
| 16 | BlackRock ✦ (passive) | 13.91M | — | $2.91B | 0.1% | n/c | 1 | SEC ↗ |
| 17 | BlackRock ✦ (passive) | 13.91M | — | $2.91B | 0.1% | n/c | 1 | SEC ↗ |
| 18 | BlackRock ✦ (passive) | 13.91M | — | $2.91B | 0.1% | n/c | 1 | SEC ↗ |
| 19 | BlackRock ✦ (passive) | 13.91M | — | $2.91B | 0.1% | n/c | 1 | SEC ↗ |
| 20 | BlackRock ✦ (passive) | 13.91M | — | $2.91B | 0.1% | n/c | 1 | SEC ↗ |
| 21 | BlackRock ✦ (passive) | 13.91M | — | $2.91B | 0.1% | n/c | 1 | SEC ↗ |
| 22 | BlackRock ✦ (passive) | 13.91M | — | $2.91B | 0.1% | n/c | 1 | SEC ↗ |
| 23 | BlackRock ✦ (passive) | 13.91M | — | $2.91B | 0.1% | n/c | 1 | SEC ↗ |
| 24 | BlackRock ✦ (passive) | 13.91M | — | $2.91B | 0.1% | n/c | 1 | SEC ↗ |
| 25 | BlackRock ✦ (passive) | 13.91M | — | $2.91B | 0.1% | n/c | 1 | SEC ↗ |
| 26 | BlackRock ✦ (passive) | 13.91M | — | $2.91B | 0.1% | n/c | 1 | SEC ↗ |
| 27 | BlackRock ✦ (passive) | 13.91M | — | $2.91B | 0.1% | n/c | 1 | SEC ↗ |
| 28 | Fidelity (FMR) ✦ | 13.41M | — | $2.81B | 0.2% | n/c | 1 | SEC ↗ |
| 29 | Fidelity (FMR) ✦ | 13.41M | — | $2.81B | 0.2% | n/c | 1 | SEC ↗ |
| 30 | Fidelity (FMR) ✦ | 13.41M | — | $2.81B | 0.2% | n/c | 1 | SEC ↗ |
| 31 | Fidelity (FMR) ✦ | 13.41M | — | $2.81B | 0.2% | n/c | 1 | SEC ↗ |
| 32 | Fidelity (FMR) ✦ | 13.41M | — | $2.81B | 0.2% | n/c | 1 | SEC ↗ |
| 33 | State Street Global Advisors ✦ (passive) | 7.49M | +0.2% | $1.57B | 0.1% | ▲ Add | 3 | SEC ↗ |
| 34 | T. Rowe Price ✦ | 6.61M | +1.3% | $1.38B | 0.2% | ▲ Add | 5 | SEC ↗ |
| 35 | T. Rowe Price ✦ | 6.61M | +1.3% | $1.38B | 0.2% | ▲ Add | 5 | SEC ↗ |
| 36 | Geode Capital Management ✦ (passive) | 4.29M | +0.7% | $893.83M | 0.1% | ▲ Add | 5 | SEC ↗ |
| 37 | Geode Capital Management ✦ (passive) | 4.29M | +0.7% | $893.83M | 0.1% | ▲ Add | 5 | SEC ↗ |
| 38 | Wellington Management ✦ | 3.19M | -12.1% | $667.38M | 0.1% | ▼ Trim | 5 | SEC ↗ |
| 39 | Wellington Management ✦ | 3.19M | -12.1% | $667.38M | 0.1% | ▼ Trim | 5 | SEC ↗ |
| 40 | Wellington Management ✦ | 3.19M | -12.1% | $667.38M | 0.1% | ▼ Trim | 5 | SEC ↗ |
| 41 | Wellington Management ✦ | 3.19M | -12.1% | $667.38M | 0.1% | ▼ Trim | 5 | SEC ↗ |
| 42 | Wellington Management ✦ | 3.19M | -12.1% | $667.38M | 0.1% | ▼ Trim | 5 | SEC ↗ |
| 43 | Wellington Management ✦ | 3.19M | -12.1% | $667.38M | 0.1% | ▼ Trim | 5 | SEC ↗ |
| 44 | Norges Bank ✦ (passive) | 1.66M | -9.7% | $347.19M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 45 | AQR Capital Management ✦ | 697.15K | -27.1% | $145.87M | 0.1% | ▼ Trim | 5 | SEC ↗ |
| 46 | AQR Capital Management ✦ | 697.15K | -27.1% | $145.87M | 0.1% | ▼ Trim | 5 | SEC ↗ |
| 47 | AQR Capital Management ✦ | 697.15K | -27.1% | $145.87M | 0.1% | ▼ Trim | 5 | SEC ↗ |
| 48 | AQR Capital Management ✦ | 697.15K | -27.1% | $145.87M | 0.1% | ▼ Trim | 5 | SEC ↗ |
| 49 | AQR Capital Management ✦ | 697.15K | -27.1% | $145.87M | 0.1% | ▼ Trim | 5 | SEC ↗ |
| 50 | Two Sigma Investments ✦ | 354.95K | +382.2% | $74.31M | 0.1% | ▲ Add | 5 | SEC ↗ |
| 51 | Millennium Management ✦ | 289.04K | +1967.7% | $60.51M | 0.1% | ▲ Add | 5 | SEC ↗ |
| 52 | Citadel Advisors ✦ | 258.20K | +57.7% | $54.05M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 53 | Citadel Advisors ✦ | 258.20K | +57.7% | $54.05M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 54 | Arrowstreet Capital ✦ | 232.10K | -49.3% | $48.59M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 55 | Point72 Asset Management ✦ | 213.82K | +433.1% | $44.76M | 0.1% | ▲ Add | 5 | SEC ↗ |
| 56 | Marshall Wace ✦ | 198.65K | New | $41.59M | 0.1% | New | 1 | SEC ↗ |
| 57 | Marshall Wace ✦ | 198.65K | New | $41.59M | 0.1% | New | 1 | SEC ↗ |
| 58 | Duquesne Family Office ✦ | 170.51K | -43.4% | $35.70M | 0.9% | ▼ Trim | 5 | SEC ↗ |
| 59 | Renaissance Technologies ✦ | 167.90K | +6.1% | $35.15M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 60 | Adage Capital Partners ✦ | 122.99K | +98.6% | $25.75M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 61 | Baillie Gifford ✦ | 101.92K | -5.2% | $21.34M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 62 | Baillie Gifford ✦ | 101.92K | -5.2% | $21.34M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 63 | Baillie Gifford ✦ | 101.92K | -5.2% | $21.34M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 64 | Baillie Gifford ✦ | 101.92K | -5.2% | $21.34M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 65 | D. E. Shaw & Co. ✦ | 56.15K | +0.5% | $11.76M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 66 | D. E. Shaw & Co. ✦ | 56.15K | +0.5% | $11.76M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 67 | Gotham Asset Management ✦ | 14.05K | -46.5% | $2.94M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 68 | Fisher Asset Management ✦ | 1.96K | -4.3% | $410,574 | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 69 | 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% |
| 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.
Frequently co-owned
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)
Aug 21
Mendonca Rogerio
Officer · 2.91K sh · $864,427
Aug 21
Mendonca Rogerio
Officer · 9 sh · $2,666
Aug 20
Fetsko Michael
Officer · 2.96K sh · $868,334
Aug 20
Fetsko Michael
Officer · 288 sh · $84,627
Awards, exercises and tax withholding are never counted as buys or sales here. Methodology
Aug 06
SC 13G/A — FMR LLC
Provenance: Ownership from parsed 13F common-stock positions (tracked universe, comparable sets for changes); insider rows from Forms 3/4/5; stakes from Schedules 13D/13G; every filing links to its original on SEC EDGAR.
Reporting period: Q2 2025 ·
Methodology ·
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