Westlake (WLK) closed at $64.56 on October 23, 2026, up 0.7% from the previous close, on volume of 985,513 shares (30-day average 849,537).
Data as of October 23, 2026.
23-Oct-2026
Westlake Announces Third Quarter 2026 Conference Call
Globe Newswire (Wed, 21-Oct 8:00 AM ET)
Westlake Royal Building Products Consolidates US Tile and Newpoint Roofing Brands Under One Name
Globe Newswire (Mon, 5-Oct 9:00 AM ET)
Westlake to Optimize European Chlorovinyls Footprint with Closure of Cologne PVC Plant
Globe Newswire (Tue, 29-Sep 6:00 AM ET)
Globe Newswire (Mon, 28-Sep 9:00 AM ET)
Business Wire (Thu, 24-Sep 9:00 AM ET)
Globe Newswire (Thu, 24-Sep 9:00 AM ET)
Westlake Announces Dual Listing on NYSE Texas
Globe Newswire (Fri, 21-Aug 11:22 AM ET)
Westlake Corporation Declares Quarterly Dividend
Globe Newswire (Fri, 14-Aug 5:43 PM ET)
Westlake Corporation Reports Second Quarter 2026 Results
Globe Newswire (Tue, 4-Aug 6:30 AM ET)
Westlake Sees Sequential Margin and Sales Volume Gains in Q1 2026 as Cost Initiatives Take Hold
Market Chameleon (Tue, 5-May 3:37 AM ET)
Westlake is a forward-integrated commodity chemicals firm based in Houston. It began as a single low-density polyethylene plant and expanded its capabilities to include ethylene, vinyl chloride monomers, and polyvinyl chloride over the next two decades. The acquisition of Axiall in 2016 made it a North American leader in chlor-alkali and PVC. Today, Westlake has two defined segments: performance and essential materials, and housing and infrastructure products. The HIP segment began operating in 2022 following a series of acquisitions in the building products space. The firm aims to maximize the value of its chemical production by integrating with the HIP segment, realizing the higher margins of finished commercial goods.
Westlake trades on the NYSE stock market under the symbol WLK.
As of October 23, 2026, WLK stock price climbed to $64.56 with 985,513 million shares trading.
WLK has a beta of 0.20, meaning it tends to be less sensitive to market movements. WLK has a correlation of 0.00 to the broad based SPY ETF.
WLK has a market cap of $8.30 billion. This is considered a Mid Cap stock.
Last quarter Westlake reported $3 billion in Revenue and $2.01 earnings per share. This beat revenue expectation by $5 million and exceeded earnings estimates by $.10.
In the last 3 years, WLK traded as high as $162.64 and as low as $56.33.
The top ETF exchange traded funds that WLK belongs to (by Net Assets): IJH, PAVE, VTI, DFSV, VB.
WLK has underperformed the market in the last year with a return of -15.4%, while the SPY ETF gained +14.3%. In the last 3 month period, WLK fell short of the market, returning -13.5%, while SPY returned +3.2%. However, in the most recent 2 weeks WLK has outperformed the stock market by returning +3.6%, while SPY returned -2.4%.
WLK support price is $62.41 and resistance is $65.87 (based on 1 day standard deviation move). This means that using the most recent 20 day stock volatility and applying a one standard deviation move around the stock's closing price, stastically there is a 67% probability that WLK shares will trade within this expected range on the day.