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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 Sep 18, 2026View All Dates

Calls ITM	Calls OTM	Puts ITM	Puts OTM
385	8,840	1,676	3,305

CSGP Sep 18, 2026 Exp. - Volume by Strike

Puts

Calls

CSGP Sep 18, 2026 Exp. - Open Interest by Strike

Puts

Calls

CSGP Sep 18, 2026 Exp. - Max Pain @ $40.00

Puts

Calls

CSGP Sep 18, 2026 Exp. - Option Chain

In the Money (ITM)

Calls

Strike	Price	Change	Vol	OI	Last	Contract Name
145.00 C	0	0%	0			CSGP260918C00145000
140.00 C	0	0%	0			CSGP260918C00140000
135.00 C	0.28	0%	5	5	02-20	CSGP260918C00135000
130.00 C	0	0%	0			CSGP260918C00130000
125.00 C	0.35	0%	2	2	11-25	CSGP260918C00125000
120.00 C	0.05	-95.83%	2	17	01-12	CSGP260918C00120000
115.00 C	4.50	+40.63%	2	3	07-23	CSGP260918C00115000
110.00 C	0.75	-67.39%	2	7	12-08	CSGP260918C00110000
105.00 C	3.00	-14.29%	2	2	10-23	CSGP260918C00105000
100.00 C	0.09	-70.00%	2	54	04-13	CSGP260918C00100000
95.00 C	0.10	-16.67%	3	15	06-16	CSGP260918C00095000
90.00 C	0.15	-76.56%	4	16	04-13	CSGP260918C00090000
85.00 C	0.10	-60.00%	5	16	06-16	CSGP260918C00085000
80.00 C	0.09	-77.50%	9	128	06-16	CSGP260918C00080000
75.00 C	0.05	+150.00%	1	28	07-24	CSGP260918C00075000
70.00 C	0.05	-44.44%	10	859	07-02	CSGP260918C00070000
65.00 C	0.10	-75.00%	2	91	05-14	CSGP260918C00065000
60.00 C	0.05	-66.67%	2	212	07-23	CSGP260918C00060000
55.00 C	0.15	+114.29%	7	446	07-28	CSGP260918C00055000
50.00 C	0.10	-28.57%	9	1,303	07-30	CSGP260918C00050000
45.00 C	0.15	-25.00%	2	3,815	08-04	CSGP260918C00045000
40.00 C	0.36	-10.00%	10	1,191	08-04	CSGP260918C00040000
35.00 C	0.75	-6.25%	48	630	08-04	CSGP260918C00035000
30.00 C	2.25	-2.17%	5	344	08-04	CSGP260918C00030000
25.00 C	4.43	-13.48%	2	32	07-24	CSGP260918C00025000
22.50 C	0	0%	0			CSGP260918C00022500
20.00 C	9.70	-14.16%	9	8	06-25	CSGP260918C00020000
17.50 C	15.50	0%	1	1	05-29	CSGP260918C00017500
15.00 C	0	0%	0			CSGP260918C00015000

Puts

Strike	Price	Change	Vol	OI	Last	Contract Name
145.00 P	0	0%	0			CSGP260918P00145000
140.00 P	0	0%	0			CSGP260918P00140000
135.00 P	0	0%	0			CSGP260918P00135000
130.00 P	0	0%	0			CSGP260918P00130000
125.00 P	0	0%	0			CSGP260918P00125000
120.00 P	0	0%	0			CSGP260918P00120000
115.00 P	0	0%	0			CSGP260918P00115000
110.00 P	0	0%	0			CSGP260918P00110000
105.00 P	0	0%	0			CSGP260918P00105000
100.00 P	74.07	+3.65%	2	2	07-23	CSGP260918P00100000
95.00 P	66.47	+5.93%	2	4	07-21	CSGP260918P00095000
90.00 P	60.58	+4.83%	1	5	07-30	CSGP260918P00090000
85.00 P	55.58	+5.36%	2	4	07-30	CSGP260918P00085000
80.00 P	47.76	+1.68%	8	12	06-16	CSGP260918P00080000
75.00 P	45.22	+7.74%	15	14	07-01	CSGP260918P00075000
70.00 P	40.61	-2.00%	3	15	07-30	CSGP260918P00070000
65.00 P	39.10	+5.39%	2	36	07-23	CSGP260918P00065000
60.00 P	31.44	+2.08%	10	45	07-21	CSGP260918P00060000
55.00 P	25.75	+3.62%	1	25	07-08	CSGP260918P00055000
50.00 P	20.43	-3.86%	32	59	07-16	CSGP260918P00050000
45.00 P	16.53	+28.14%	1	186	07-27	CSGP260918P00045000
40.00 P	10.58	-11.09%	10	712	08-03	CSGP260918P00040000
35.00 P	5.94	-1.00%	1	557	08-04	CSGP260918P00035000
30.00 P	2.45	+8.89%	17	2,196	08-04	CSGP260918P00030000
25.00 P	0.60	0.00%	10	649	08-04	CSGP260918P00025000
22.50 P	0.45	+12.50%	6	367	07-31	CSGP260918P00022500
20.00 P	0.19	-47.22%	12	81	08-03	CSGP260918P00020000
17.50 P	0.10	-50.00%	8	11	07-28	CSGP260918P00017500
15.00 P	0.25	0%	1	1	07-29	CSGP260918P00015000

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