Dark

Check out our Level2View

CSGP
CoStar Group Inc
stock NASDAQ

At Close

Aug 5, 2026 3:59:53 PM EDT

30.22USD+1.359%(+0.41)6,566,708

28.45Bid 31.74Ask 3.29Spread

Pre-market

Aug 5, 2026 9:29:31 AM EDT

30.39USD+1.946%(+0.58)11,852

After-hours

Aug 5, 2026 4:52:30 PM EDT

30.30USD+0.281%(+0.08)200

OverviewOption ChainHistoricalExchangesShortsMore

Expiration Dates

Aug 21, 2026 Sep 18, 2026 Oct 16, 2026 Dec 18, 2026 Jan 15, 2027 Mar 19, 2027 Jun 17, 2027 Jan 21, 2028

ITM/OTM for Aug 21, 2026View All Dates

Calls ITM	Calls OTM	Puts ITM	Puts OTM
1,004	2,878	237	5,286

CSGP Aug 21, 2026 Exp. - Volume by Strike

Puts

Calls

CSGP Aug 21, 2026 Exp. - Open Interest by Strike

Puts

Calls

CSGP Aug 21, 2026 Exp. - Max Pain @ $30.00

Puts

Calls

CSGP Aug 21, 2026 Exp. - Option Chain

In the Money (ITM)

Calls

Strike	Price	Change	Vol	OI	Last	Contract Name
45.00 C	0.12	+20.00%	22	21	07-28	CSGP260821C00045000
40.00 C	0.13	+30.00%	1	1,994	08-04	CSGP260821C00040000
35.00 C	0.24	-20.00%	23	863	08-04	CSGP260821C00035000
30.00 C	1.35	-15.63%	12	746	08-04	CSGP260821C00030000
25.00 C	4.20	+0.24%	5	237	07-30	CSGP260821C00025000
22.50 C	6.70	+11.67%	5	5	07-29	CSGP260821C00022500
20.00 C	0	0%	0			CSGP260821C00020000
17.50 C	11.10	+12.92%	10	16	07-15	CSGP260821C00017500

Puts

Strike	Price	Change	Vol	OI	Last	Contract Name
45.00 P	18.10	0%	8	2	07-23	CSGP260821P00045000
40.00 P	0	0%	0			CSGP260821P00040000
35.00 P	5.80	-14.71%	1	235	08-03	CSGP260821P00035000
30.00 P	1.70	+9.68%	2	2,287	08-04	CSGP260821P00030000
25.00 P	0.26	+30.00%	8	2,434	08-04	CSGP260821P00025000
22.50 P	0.22	+120.00%	3	422	08-03	CSGP260821P00022500
20.00 P	0.05	-72.22%	10	57	07-29	CSGP260821P00020000
17.50 P	0.10	+100.00%	2	86	07-31	CSGP260821P00017500

Share