Dark

Check out our API

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 Jan 21, 2028View All Dates

Calls ITM	Calls OTM	Puts ITM	Puts OTM
831	11,389	1,045	489

CSGP Jan 21, 2028 Exp. - Volume by Strike

Puts

Calls

CSGP Jan 21, 2028 Exp. - Open Interest by Strike

Puts

Calls

CSGP Jan 21, 2028 Exp. - Max Pain @ $35.00

Puts

Calls

CSGP Jan 21, 2028 Exp. - Option Chain

In the Money (ITM)

Calls

Strike	Price	Change	Vol	OI	Last	Contract Name
130.00 C	3.10	+55.78%	3	5	05-07	CSGP280121C00130000
125.00 C	1.00	0%	1	0	02-25	CSGP280121C00125000
120.00 C	1.05	-81.45%	1	6	05-15	CSGP280121C00120000
115.00 C	0	0%	0			CSGP280121C00115000
110.00 C	1.15	-40.72%	1	4	05-15	CSGP280121C00110000
105.00 C	2.20	-63.93%	4	13	03-17	CSGP280121C00105000
100.00 C	2.04	+2.00%	3	34	03-25	CSGP280121C00100000
95.00 C	1.81	0%	4	0	06-17	CSGP280121C00095000
90.00 C	1.00	-50.98%	10	30	07-06	CSGP280121C00090000
85.00 C	1.09	+3.81%	20	1,932	07-31	CSGP280121C00085000
80.00 C	3.50	-28.57%	1	45	04-17	CSGP280121C00080000
75.00 C	1.55	+3.33%	3	2,436	08-04	CSGP280121C00075000
70.00 C	1.81	-33.21%	2	677	07-09	CSGP280121C00070000
65.00 C	2.15	+13.16%	4	687	07-30	CSGP280121C00065000
60.00 C	2.25	0.00%	2	2,051	07-31	CSGP280121C00060000
55.00 C	2.65	-33.75%	3	22	07-24	CSGP280121C00055000
50.00 C	3.60	+7.46%	3	1,646	08-04	CSGP280121C00050000
45.00 C	4.30	0.00%	40	180	08-04	CSGP280121C00045000
40.00 C	5.20	-5.45%	1	151	07-31	CSGP280121C00040000
35.00 C	7.10	+10.94%	28	1,470	08-03	CSGP280121C00035000
30.00 C	8.70	-13.60%	1	455	08-03	CSGP280121C00030000
25.00 C	11.30	+0.80%	1	46	08-04	CSGP280121C00025000
22.50 C	11.50	0.00%	1	28	07-21	CSGP280121C00022500
20.00 C	13.00	-13.33%	1	31	07-30	CSGP280121C00020000
17.50 C	15.30	-5.73%	1	146	07-20	CSGP280121C00017500
15.00 C	17.00	-0.58%	5	125	08-04	CSGP280121C00015000

Puts

Strike	Price	Change	Vol	OI	Last	Contract Name
130.00 P	76.94	0%	2	0	02-03	CSGP280121P00130000
125.00 P	0	0%	0			CSGP280121P00125000
120.00 P	0	0%	0			CSGP280121P00120000
115.00 P	0	0%	0			CSGP280121P00115000
110.00 P	0	0%	0			CSGP280121P00110000
105.00 P	71.10	0%	2	0	06-09	CSGP280121P00105000
100.00 P	0	0%	0			CSGP280121P00100000
95.00 P	0	0%	0			CSGP280121P00095000
90.00 P	0	0%	0			CSGP280121P00090000
85.00 P	23.60	0%	1	1	01-26	CSGP280121P00085000
80.00 P	38.00	+31.99%	1	28	03-13	CSGP280121P00080000
75.00 P	38.00	+90.00%	1	5	04-09	CSGP280121P00075000
70.00 P	39.90	-0.08%	20	91	06-29	CSGP280121P00070000
65.00 P	26.60	+1.53%	2	7	04-06	CSGP280121P00065000
60.00 P	30.60	-0.33%	10	32	06-29	CSGP280121P00060000
55.00 P	18.60	+59.38%	22	28	04-07	CSGP280121P00055000
50.00 P	23.75	+7.47%	1	60	07-27	CSGP280121P00050000
45.00 P	19.00	-1.04%	40	395	07-24	CSGP280121P00045000
40.00 P	15.10	+4.14%	1	234	07-27	CSGP280121P00040000
35.00 P	10.40	0.00%	38	164	07-20	CSGP280121P00035000
30.00 P	8.00	+8.70%	20	243	07-29	CSGP280121P00030000
25.00 P	4.88	-14.39%	10	116	07-27	CSGP280121P00025000
22.50 P	3.64	-1.36%	2	10	07-16	CSGP280121P00022500
20.00 P	3.10	+8.39%	30	61	07-29	CSGP280121P00020000
17.50 P	2.60	+36.84%	21	45	07-29	CSGP280121P00017500
15.00 P	1.70	+2.41%	2	14	07-29	CSGP280121P00015000

Share