WLK — WESTLAKE CORP
Price · 2024-08-26 → 2026-08-21
499 daily closes shownAnonymous view is capped at two years of history. A free account extends it to five, and Pro opens the whole archive back to 2016-01-04.
Performance
Technicals
Dividends
Measured signals that fired on WLK
| date | signal | measured base rate |
|---|---|---|
| 2026-08-04 | Fair value gap, bullish structure | -0.67% over 21 days · t = -6.43 · n = 111,973 statistically distinguishable from its control group |
| 2026-07-30 | Equal lows taken out structure | -0.64% over 21 days · t = -4.75 · n = 55,661 statistically distinguishable from its control group |
| 2026-07-27 | Fair value gap, bearish structure | -0.45% over 21 days · t = -3.29 · n = 108,591 statistically distinguishable from its control group |
| 2026-06-22 | Fair value gap, bearish structure | -0.45% over 21 days · t = -3.29 · n = 108,591 statistically distinguishable from its control group |
| 2026-06-18 | Bollinger bandwidth breaks out of its own compression structure | -0.63% over 21 days · t = -2.80 · n = 7,196 statistically distinguishable from its control group |
| 2026-05-19 | Equal lows taken out structure | -0.64% over 21 days · t = -4.75 · n = 55,661 statistically distinguishable from its control group |
Excess return against a matched control group, on a point-in-time universe that includes delisted companies. Most families do not survive that. How the measurement works →
Insider transactions (Form 4)
| date | insider | what | shares | price | value |
|---|---|---|---|---|---|
| 2026-08-11 | Chao Albert Executive Chairman | Open-market sale | 31.4K | 80.42 | 2.5M |
| 2026-08-11 | Chao Albert Executive Chairman | Option exercise | 38.9K | 61.87 | 2.4M |
| 2026-08-11 | Chao Albert Executive Chairman | Open-market sale | 7.5K | 79.70 | 596.9K |
| 2026-08-08 | Chao David Tsung-Hung Director | Option exercise | 2.2K | — | — |
| 2026-08-08 | NORTHCUTT R BRUCE Director | Option exercise | 2.2K | — | — |
| 2026-08-08 | Graff Michael J Director | Option exercise | 2.2K | — | — |
| 2026-08-08 | MCCOLLUM MARK A Director | Option exercise | 2.2K | — | — |
| 2026-08-08 | Lubel Kimberly S Director | Option exercise | 2.2K | — | — |
| 2026-08-08 | Chao Catherine T. Director | Option exercise | 2.2K | — | — |
| 2026-08-08 | CREGG ROGER A Director | Option exercise | 2.2K | — | — |
Open-market purchases (code P) are the informative ones. Grants, option exercises and tax withholding are compensation mechanics, not decisions. How to read a Form 4 →
Largest institutional holders
| manager | value | shares |
|---|---|---|
| Orbis Allan Gray Ltd | 618.4M | 5.3M |
| Capital World Investors | 491.9M | 4.2M |
| BlackRock, Inc. | 359.7M | 3.1M |
| BRANDES INVESTMENT PARTNERS, LP | 215.3M | 1.8M |
| WELLINGTON MANAGEMENT GROUP LLP | 209.5M | 1.8M |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 206.7M | 1.8M |
| DIMENSIONAL FUND ADVISORS LP | 171.3M | 1.5M |
| VANGUARD CAPITAL MANAGEMENT LLC | 170.0M | 1.5M |
| GOLDMAN SACHS GROUP INC | 162.8M | 1.4M |
| STATE STREET CORP | 161.3M | 1.4M |
13F positions as of 2026-03-31, filed up to 45 days after quarter end. Long-only US equity — shorts and derivatives never appear. What 13F does and does not show →
Latest SEC filings
| form | filed | period | |
|---|---|---|---|
| 4 | 2026-08-17 | 2026-08-14 | on EDGAR ↗ |
| 4 | 2026-08-17 | 2026-08-14 | on EDGAR ↗ |
| 4 | 2026-08-17 | 2026-08-14 | on EDGAR ↗ |
| 4 | 2026-08-17 | 2026-08-14 | on EDGAR ↗ |
| 4 | 2026-08-17 | 2026-08-14 | on EDGAR ↗ |
| 4 | 2026-08-17 | 2026-08-14 | on EDGAR ↗ |
| 4 | 2026-08-17 | 2026-08-14 | on EDGAR ↗ |
| 4 | 2026-08-17 | 2026-08-14 | on EDGAR ↗ |
Short selling
This is off-exchange short volume, not short interest: it is flow, not position, and 40–50% is normal because market makers short to fill your buy. Why that number misleads →
Recent headlines
- Westlake Securities Secures Expanded Senior Credit Facility for SolvChem with Amegy Bank · 2026-08-18
- Westlake Corporation declares $0.533 dividend · 2026-08-17
- WESTLAKE CORP (WLK) filed form 4 · 2026-08-17 · SEC EDGAR
- WESTLAKE CORP (WLK) filed form 4 · 2026-08-17 · SEC EDGAR
- WESTLAKE CORP (WLK) filed form 4 · 2026-08-17 · SEC EDGAR
- WESTLAKE CORP (WLK) filed form 4 · 2026-08-17 · SEC EDGAR
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