CoStar Group (CSGP) Options Chain & Prices $76.79 -1.54 (-1.97%) Closing price 04:00 PM EasternExtended Trading$76.74 -0.05 (-0.06%) As of 06:47 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 ForecastsChartCompetitorsEarningsFinancialsHeadlinesInsider TradesOptions ChainOwnershipSEC FilingsShort InterestTrends CSGP Put and Call Options List 1/15/2027 3/20/2026 1/16/2026 10/17/2025 9/19/2025 7/18/2025 6/20/2025 4/17/2025 3/21/2025 2/21/2025 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 VolatilityDeltaTrades2/21/2025$70.00$6.875Call13 - - 191(-1)33.60% (-52.87%)142/21/2025$75.00$0.000Put5 - 13744(+12)200.16% (+145.96%)052/21/2025$75.00$1.825Call23574432(-2)29.68% (-24.51%)1172/21/2025$80.00$3.155Put2,90911,0595359(-4)28.91% (-17.00%)-12052/21/2025$80.00$0.000Call226231890(-796)28.91% (-15.49%)0262/21/2025$85.00$8.175Put4 - - 4(+0)30.49% (-39.57%)-122/21/2025$85.00$0.000Call2 - 1373(-2)30.49% (-39.57%)02End-of-day options data provided by Trade Alert and Intrinio. Related Companies and Tools Related Companies EQIX Options SE Options EBAY Options VRSN Options AKAM Options SPSC Options YELP Options ZD Options CMPR Options QNST Options Options Chain Tools Short Interest TrackerShort Interest IncreasesShort Interest DecreasesUnusual Call VolumeUnusual Put Volume This page (NASDAQ:CSGP) was last updated on 2/21/2025 by MarketBeat.com Staff From Our PartnersCollect $7k per month from Tesla’s SECRET dividendTesla doesn't pay a traditional dividend.... But I just discovered a secret backdoor to collect a secret 69...Investors Alley | SponsoredElon “obliterates” Bill Gates?All 10 of the world's biggest money managers follow my work, and the Pentagon, the FBI and Harvard professors ...Altimetry | SponsoredNVDA Crash UpdateAn overseas AI rival sent shockwaves through the U.S. tech market last week... 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