MKS (MKSI) Options Chain & Prices $99.50 -0.04 (-0.04%) Closing price 04:00 PM EasternExtended Trading$99.49 -0.01 (-0.01%) As of 04:20 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 MKSI Put and Call Options List 12/18/2026 1/16/2026 12/19/2025 10/17/2025 9/19/2025 8/15/2025 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 VolatilityDeltaTrades8/15/2025$80.00$0.544Put11 - 0(+0)65.47% (-5.05%)-0.07284518/15/2025$85.00$1.005Put951940(+0)61.41% (-4.00%)-0.127124208/15/2025$90.00$1.818Put11 - 25(+0)57.97% (-2.94%)-0.21212818/15/2025$90.00$11.692Call1 - - 1(+0)57.96% (-2.95%)0.78828718/15/2025$95.00$3.177Put323112(+0)55.25% (-1.87%)-0.33199148/15/2025$95.00$8.061Call11 - 17(+0)55.24% (-1.87%)0.66903518/15/2025$100.00$5.163Call261491229(+1179)53.36% (-1.35%)0.523669148/15/2025$110.00$1.754Call2 - 2497(+1)52.15% (+0.55%)0.2481211End-of-day options data provided by Trade Alert and Intrinio. Related Companies and Tools Related Companies ADI Options Chain AEIS Options Chain AMAT Options Chain ENTG Options Chain KLAC Options Chain LRCX Options Chain MCHP Options Chain NXPI Options Chain TER Options Chain UCTT Options Chain Options Chain Tools Short Interest TrackerShort Interest IncreasesShort Interest DecreasesUnusual Call VolumeUnusual Put Volume This page (NASDAQ:MKSI) was last updated on 7/25/2025 by MarketBeat.com Staff From Our PartnersINVESTOR ALERT: Tiny “$3 AI Wonder Stock” on the Verge of Blasting OffRight now, we’re witnessing a monumental shift in the world.Traders Agency | SponsoredMarket 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 | SponsoredGoogle did what!?!?A new technology has sparked a modern-day gold rush in Silicon Valley. OpenAI’s Sam Altman invested $375M. 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