Dark

Check out our Dark Pool Levels

CSGP
CoStar Group Inc
stock NASDAQ

At Close

Sep 30, 2026 4:00:00 PM EDT

27.39USD+1.633%(+0.44)6,692,940

27.37Bid 27.40Ask 0.03Spread

Pre-market

Sep 30, 2026 9:21:30 AM EDT

27.14USD+0.705%(+0.19)1,000

After-hours

Sep 29, 2026 4:08:30 PM EDT

26.95USD0.000%(0.00)0

OverviewOption ChainHistoricalExchangesShortsMore

Expiration Dates

Oct 16, 2026 Nov 20, 2026 Dec 18, 2026 Jan 15, 2027 Mar 19, 2027 Apr 16, 2027 Jun 17, 2027 Sep 17, 2027 Jan 21, 2028 Jan 19, 2029

ITM/OTM for Sep 17, 2027View All Dates

Calls ITM	Calls OTM	Puts ITM	Puts OTM
20	72	11	270

CSGP Sep 17, 2027 Exp. - Volume by Strike

Puts

Calls

CSGP Sep 17, 2027 Exp. - Open Interest by Strike

Puts

Calls

CSGP Sep 17, 2027 Exp. - Max Pain @ $25.00

Puts

Calls

CSGP Sep 17, 2027 Exp. - Option Chain

In the Money (ITM)

Calls

Strike	Price	Change	Vol	OI	Last	Contract Name
50.00 C	1.45	-23.68%	5	61	09-23	CSGP270917C00050000
45.00 C	0	0%	0			CSGP270917C00045000
40.00 C	0	0%	0			CSGP270917C00040000
35.00 C	3.70	-5.13%	4	6	09-24	CSGP270917C00035000
30.00 C	4.74	-5.39%	1	5	09-29	CSGP270917C00030000
25.00 C	10.00	-9.09%	1	9	09-04	CSGP270917C00025000
22.50 C	0	0%	0			CSGP270917C00022500
20.00 C	0	0%	0			CSGP270917C00020000
17.50 C	13.50	0.00%	2	11	09-22	CSGP270917C00017500
15.00 C	0	0%	0			CSGP270917C00015000

Puts

Strike	Price	Change	Vol	OI	Last	Contract Name
50.00 P	0	0%	0			CSGP270917P00050000
45.00 P	0	0%	0			CSGP270917P00045000
40.00 P	0	0%	0			CSGP270917P00040000
35.00 P	0	0%	0			CSGP270917P00035000
30.00 P	6.60	+3.12%	10	11	09-28	CSGP270917P00030000
25.00 P	3.80	+15.15%	20	200	09-24	CSGP270917P00025000
22.50 P	2.70	-1.82%	1	65	09-29	CSGP270917P00022500
20.00 P	1.42	-11.25%	4	5	08-26	CSGP270917P00020000
17.50 P	1.10	0%	1	0	09-04	CSGP270917P00017500
15.00 P	0	0%	0			CSGP270917P00015000

Share