MKS Instruments (MKSI) Options Chain & Prices $90.21 -1.24 (-1.36%) Closing price 04:00 PM EasternExtended Trading$89.87 -0.34 (-0.38%) As of 07:47 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 12/19/2025 10/17/2025 7/18/2025 5/16/2025 4/17/2025 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 VolatilityDeltaTrades4/17/2025$85.00$1.880Put11 - 56(+0)46.34% (-0.52%)-0.27545414/17/2025$100.00$1.095Call21125(+1)44.49% (+0.13%)0.20574224/17/2025$105.00$15.015Put1 - - 4(+0)45.10% (+0.94%)-0.9062661End-of-day options data provided by Trade Alert and Intrinio. Related Companies and Tools Related Companies ENTG Options Chain ONTO Options Chain AMKR Options Chain AEIS Options Chain FORM Options Chain ACLS Options Chain PLAB Options Chain VECO Options Chain UCTT Options Chain PDFS Options Chain Options Chain Tools Short Interest TrackerShort Interest IncreasesShort Interest DecreasesUnusual Call VolumeUnusual Put Volume This page (NASDAQ:MKSI) was last updated on 3/25/2025 by MarketBeat.com Staff From Our PartnersYour Wealth is Under AttackPlease don't wait—this is your moment to take action. Download your Wealth Protection Guide now, claim your fr...American Alternative | SponsoredA brutally honest economic warning for 2025 (see proof)New York Times best-selling financial author and world-renowned economist Addison Wiggin (a man who’s worked s...Banyan Hill Publishing | Sponsored$2 Trillion Disappears Because of Fed's Secretive New Move$2 trillion has disappeared from the US government's books. 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