Ownership history in LUMINUS MANAGEMENT LLC · 23 quarters on record
This page tracks every 13F SEC filing in which LUMINUS MANAGEMENT LLC reported a position in WESTLAKE CHEM CORP COM (WLK). Data includes quarterly share count, position size as % of portfolio, estimated market value, and end-of-quarter stock price — sourced directly from SEC EDGAR 13F filings.
| Quarter | Action | Shares | Change | Chg % | % of Fund | Mkt Value | Price (EOQ) |
|---|---|---|---|---|---|---|---|
| 2025 Q4 | REDUCED | 35,189 | -85,311 | -70.8% | 2.28% | $2.6M | $73.57 |
| 2023 Q3 | REDUCED | 120,500 | -1,149 | -0.9% | 4.63% | $15.0M | $118.61 |
| 2023 Q2 | ADDED | 121,649 | +3,049 | +2.6% | 4.37% | $14.5M | $113.23 |
| 2023 Q1 | ADDED | 118,600 | +28,050 | +31.0% | 3.38% | $13.8M | $109.58 |
| 2022 Q4 | ADDED | 90,550 | +10,650 | +13.3% | 2.31% | $9.3M | $96.60 |
| 2022 Q1 | REDUCED | 79,900 | -55,700 | -41.1% | 2.21% | $9.9M | $115.21 |
| 2018 Q3 | REDUCED | 135,600 | -300,614 | -68.9% | 0.23% | $11.3M | $73.54 |
| 2018 Q1 | ADDED | 436,214 | +385,448 | +759.3% | 1.01% | $48.5M | $97.93 |
| 2017 Q4 | REDUCED | 50,766 | -167,800 | -76.8% | 0.11% | $5.4M | $93.68 |
| 2017 Q3 | ADDED | 218,566 | +107,566 | +96.9% | 0.48% | $18.2M | $72.91 |
As of 2025 Q4 — sorted by position size