CoStar Group (CSGP) Options Chain & Prices $77.53 -1.47 (-1.86%) Closing price 04:00 PM EasternExtended Trading$77.89 +0.36 (+0.46%) As of 04:58 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 1/21/2028 1/15/2027 9/18/2026 6/18/2026 4/17/2026 3/20/2026 1/16/2026 11/21/2025 10/17/2025 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 VolatilityDeltaTrades10/17/2025$75.00$0.610Put512214(+0)42.45% (-0.32%)-0.203149410/17/2025$80.00$2.360Put824657(-2)37.81% (-1.48%)-0.567847410/17/2025$80.00$1.508Call17611519(+0)37.81% (-1.46%)0.445197610/17/2025$85.00$6.273Put1 - - 886(-2)40.81% (+2.10%)-0.877904110/17/2025$85.00$0.357Call421700(-8)40.81% (+2.10%)0.143862410/17/2025$90.00$0.101Call1 - - 1761(+0)46.67% (+6.40%)0.0448341End-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 OPEN Options SPSC 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 10/9/2025 by MarketBeat.com Staff From Our PartnersBuilding The Infrastructure for the Coming Financial ResetWhile China pushes nearly $1 trillion through its new digital currency, one emerging company is quietly buildi...Intellistake | SponsoredBitcoin grabs headlines, but smart money likes this tokenBitcoin grabs headlines, but smart money likes this token My research team has identified the token positio...Crypto 101 Media | SponsoredMagnificent 7 being replaced by the “Hidden 7”?BULLISH: It's time to buy this 'hidden' AI stock An award-winning stock-rating system has turned BULLISH on...Chaikin Analytics | SponsoredCapital Gains Tax Strategies for SeniorsCapital gains taxes can take a bite out of your retirement income—unless you have a smart strategy. 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