Westlake (WLK) Options Chain & Prices $70.59 +0.09 (+0.13%) Closing price 07/31/2026 03:59 PM EasternExtended Trading$70.40 -0.19 (-0.27%) As of 07/31/2026 07:34 PM Eastern Extended trading is trading that happens on electronic markets outside of regular trading hours. This is a fair market value extended hours price provided by Massive. Learn more. Add Compare Share Share Options Chain Stock AnalysisAnalyst ForecastsChartCompetitorsDividendEarningsFinancialsHeadlinesInsider TradesOptions ChainOwnershipSEC FilingsShort InterestTrendsBuy This Stock WLK Put and Call Options List 1/15/2027 12/18/2026 10/16/2026 9/18/2026 8/21/2026 Options Date Put and Call Options Put Options Call Options Options Type All In The Money Out of The Money Moneyness With Volume Without Volume All Volume Strike Price Min Strike Price Max Export ExpiresStrike PriceClose PricePut/CallVolumeVolume AskVolume BidOpen InterestImplied VolatilityDeltaTrades8/21/2026$60.00$0.719Put2532248(+0)61.15% (-2.59%)-0.13219728/21/2026$65.00$1.618Put1 - 10(+0)55.31% (-2.26%)-0.2679321End-of-day options data provided by Trade Alert and Intrinio. Related Companies and Tools Related Companies AdvanSix Options Data Cabot Options Data Celanese Options Data DOW Options Data Eastman Chemical Options Data Huntsman Options Data LyondellBasell Industries Options Data Olin Options Data Hawkins Options Data Koppers Options Data Options Chain Tools Short Interest TrackerShort Interest IncreasesShort Interest DecreasesUnusual Call VolumeUnusual Put Volume This page (NYSE:WLK) was last updated on 8/3/2026 by MarketBeat.com Staff. 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