CoStar Group (CSGP) Options Chain & Prices $89.49 -0.84 (-0.93%) Closing price 08/29/2025 04:00 PM EasternExtended Trading$89.48 0.00 (-0.01%) As of 08/29/2025 06:55 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 ForecastsChartCompetitorsEarningsFinancialsHeadlinesInsider TradesOptions ChainOwnershipSEC FilingsShort InterestTrendsBuy This Stock CSGP Put and Call Options List 1/15/2027 9/18/2026 6/18/2026 4/17/2026 3/20/2026 1/16/2026 10/17/2025 9/19/2025 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 VolatilityDeltaTrades9/19/2025$75.00$0.084Put1 - 1440(+0)39.31% (+2.92%)-0.02633319/19/2025$80.00$0.226Put10 - - 1680(+0)33.21% (+1.16%)-0.07092669/19/2025$85.00$0.722Put281163197(+18)28.28% (-0.40%)-0.206887109/19/2025$85.00$5.423Call6 - 6492(-2)28.28% (-0.40%)0.79565319/19/2025$90.00$2.371Put24212729(+0)25.59% (-0.93%)-0.515703149/19/2025$90.00$2.060Call6141915(-593)25.59% (-0.93%)0.49247559/19/2025$95.00$0.548Call122101309(+1)25.81% (+0.12%)0.18785159/19/2025$100.00$0.135Call1 - - 413(+1)27.71% (+1.85%)0.0560261End-of-day options data provided by Trade Alert and Intrinio. Related Companies and Tools Related Companies SE Options EQIX Options EBAY Options VRSN Options AKAM Options SPSC Options OPEN Options YELP Options ZD Options CMPR Options Options Chain Tools Short Interest TrackerShort Interest IncreasesShort Interest DecreasesUnusual Call VolumeUnusual Put Volume This page (NASDAQ:CSGP) was last updated on 9/1/2025 by MarketBeat.com Staff From Our PartnersRetire Comfortably with These New Monthly Income ETFs?Too many retirees lie awake at night, worried their savings won’t last. Traditional advice and tiny returns ju...Investors Alley | SponsoredForget Tesla — This Tiny AI Stock Is Musk’s Real PlayWhile Wall Street focused on Tesla’s earnings, Elon Musk was quietly building a supercomputer so powerful it c...Behind the Markets | SponsoredOut of 18,347 Cryptocurrencies... 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