Westlake (WLK) Options Chain & Prices $73.72 -2.48 (-3.26%) Closing price 03:59 PM EasternExtended Trading$75.12 +1.41 (+1.91%) As of 04:36 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 Polygon.io. Learn more. Add Compare Share Share Options Chain Stock AnalysisAnalyst ForecastsChartCompetitorsDividendEarningsFinancialsHeadlinesInsider TradesOptions ChainOwnershipSEC FilingsShort InterestSustainabilityTrendsBuy This Stock WLK Put and Call Options List 1/16/2026 12/19/2025 10/17/2025 9/19/2025 7/18/2025 6/20/2025 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 to Excel ExpiresStrike PriceClose PricePut/CallVolumeVolume AskVolume BidOpen InterestImplied VolatilityDeltaTrades6/20/2025$65.00$0.593Put55 - 0(+0)49.15% (+0.91%)-0.10791916/20/2025$80.00$5.227Put1 - 1295(+11)37.56% (+4.04%)-0.6334711End-of-day options data provided by Trade Alert and Intrinio. Related Companies and Tools Related Companies LyondellBasell Industries Options Data Cabot Options Data Hawkins Options Data Kronos Worldwide Options Data Koppers Options Data Tredegar Options Data International Flavors & Fragrances Options Data NewMarket Options Data Sensient Technologies Options Data Methanex Options Data Options Chain Tools Short Interest TrackerShort Interest IncreasesShort Interest DecreasesUnusual Call VolumeUnusual Put Volume This page (NYSE:WLK) was last updated on 5/21/2025 by MarketBeat.com Staff From Our PartnersMarket Panic: Trump Just Dropped a Bomb on Your Stockstock Market Panic: Trump Just Dropped a Bomb on Your Stocks The market is in freefall—and Trump's new tarif...American Alternative | SponsoredGold Hits New Highs as Global Markets SpiralWhen Trump took office in 2017, gold was just $1,100 an ounce. 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