WLK
Westlake Corporation · Basic Materials · Chemicals - Specialty
Momentum inputs (comparable managers): holder breadth 0.0% · share flow +8.1% · net new positions 0.0% · formula
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q4 2024
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q3 2026 | 2 | -1 | 21.69K | $1.35M | n/a | −2 |
| Q2 2026 | 108 | +6 | 28.25M | $2.07B | +17 | −13 |
| Q1 2026 | 107 | +10 | 30.63M | $3.57B | +16 | −7 |
| Q4 2025 | 97 | -3 | 33.32M | $2.46B | +2 | −4 |
| Q3 2025 | 21 | +2 | 15.45M | $1.19B | +2 | −1 |
| Q2 2025 | 17 | 0 | 15.73M | $1.19B | +3 | −3 |
| Q1 2025 | 14 | -1 | 6.45M | $645.11M | n/a | −1 |
| Q4 2024 | 15 | 0 | 5.16M | $591.46M | +1 | −1 |
| Q3 2024 | 14 | +1 | 3.58M | $537.73M | +2 | −1 |
| Q2 2024 | 13 | n/a | 3.36M | $486.12M | n/a | n/a |
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | Capital World Investors ✦ | 1.29M | +0.1% | $147.61M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 2 | State Street Global Advisors ✦ (passive) | 1.19M | n/a | $136.92M | 0.0% | n/c | 1 | SEC ↗ |
| 3 | Citadel Advisors ✦ | 680.33K | +29.8% | $78.00M | 0.1% | ▲ Add | 3 | SEC ↗ ×2 |
| 4 | Geode Capital Management ✦ (passive) | 557.94K | +1.0% | $63.83M | 0.0% | ▲ Add | 3 | SEC ↗ ×2 |
| 5 | Norges Bank ✦ (passive) | 406.71K | +1.1% | $46.63M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 6 | Renaissance Technologies ✦ | 350.70K | +108.6% | $40.21M | 0.1% | ▲ Add | 3 | SEC ↗ |
| 7 | D. E. Shaw & Co. ✦ | 252.75K | +305.3% | $28.98M | 0.0% | ▲ Add | 2 | SEC ↗ ×2 |
| 8 | Millennium Management ✦ | 193.09K | +122.6% | $22.14M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 9 | Two Sigma Investments ✦ | 104.32K | -26.3% | $11.96M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 10 | Wellington Management ✦ | 42.93K | +5.6% | $4.92M | 0.0% | ▲ Add | 3 | SEC ↗ ×2 |
| 11 | Adage Capital Partners ✦ | 30.00K | New | $3.44M | 0.0% | New | 1 | SEC ↗ |
| 12 | T. Rowe Price ✦ | 22.12K | +11.9% | $2.54M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 13 | AQR Capital Management ✦ | 17.43K | -80.7% | $1.99M | 0.0% | ▼ Trim | 3 | SEC ↗ ×2 |
| 14 | Marshall Wace ✦ | 15.91K | -62.5% | $1.82M | 0.0% | ▼ Trim | 2 | SEC ↗ ×3 |
| 15 | Gotham Asset Management ✦ | 4.07K | -39.0% | $466,969 | 0.0% | ▼ Trim | 3 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value: the conviction measure. ✦ = curated manager.
New buyers
| Adage Capital Partners | $3.44M | 0.0% |
Exited
| Point72 Asset Management | $23.40M | was 0.1% |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 332 holders, 44.00M shares, $4.81B 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 · 7.49K sh · $596,873
Officer, Director · 31.38K sh · $2.52M
Awards, exercises and tax withholding are never counted as buys or sales here. Methodology