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CSGP
CoStar Group Inc
stock NASDAQ

At Close

Sep 29, 2026 3:59:59 PM EDT

26.95USD-0.259%(-0.07)5,193,571

0.00Bid 0.00Ask 0.00Spread

Pre-market

Sep 29, 2026 9:29:30 AM EDT

26.73USD-1.073%(-0.29)1,517

After-hours

Sep 29, 2026 4:08:30 PM EDT

26.95USD0.000%(0.00)495

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 Jan 21, 2028View All Dates

Calls ITM	Calls OTM	Puts ITM	Puts OTM
811	14,290	1,458	310

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 @ $30.00

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	0.16	-76.81%	2	6	09-09	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	0.90	-18.92%	7	37	08-24	CSGP280121C00090000
85.00 C	0.50	-30.56%	20	1,903	09-25	CSGP280121C00085000
80.00 C	0.55	-15.38%	1	346	09-28	CSGP280121C00080000
75.00 C	0.70	-12.50%	1	2,431	09-24	CSGP280121C00075000
70.00 C	1.77	-3.28%	1	665	09-03	CSGP280121C00070000
65.00 C	1.00	-33.33%	1	690	09-28	CSGP280121C00065000
60.00 C	1.20	-16.08%	30	2,125	09-28	CSGP280121C00060000
55.00 C	1.75	-22.22%	1	22	09-22	CSGP280121C00055000
50.00 C	2.20	-8.33%	1	1,748	09-25	CSGP280121C00050000
45.00 C	2.95	-13.24%	4	1,783	09-23	CSGP280121C00045000
40.00 C	3.30	-30.67%	1	222	09-28	CSGP280121C00040000
35.00 C	4.46	-5.11%	11	1,713	09-28	CSGP280121C00035000
30.00 C	6.30	-7.62%	2	542	09-24	CSGP280121C00030000
25.00 C	8.40	-18.45%	1	55	09-28	CSGP280121C00025000
22.50 C	10.20	-7.27%	1	49	09-25	CSGP280121C00022500
20.00 C	13.50	-7.79%	10	44	09-08	CSGP280121C00020000
17.50 C	12.80	-11.11%	3	177	09-28	CSGP280121C00017500
15.00 C	14.10	-7.24%	142	486	09-28	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	35.00	+31.58%	10	14	09-11	CSGP280121P00065000
60.00 P	31.00	+13.55%	10	41	09-22	CSGP280121P00060000
55.00 P	24.44	+2.26%	1	32	09-15	CSGP280121P00055000
50.00 P	21.47	+7.89%	50	111	09-10	CSGP280121P00050000
45.00 P	17.17	+1.00%	1	414	09-18	CSGP280121P00045000
40.00 P	12.22	-19.07%	30	264	08-17	CSGP280121P00040000
35.00 P	10.00	+4.17%	2	158	09-23	CSGP280121P00035000
30.00 P	6.72	-2.61%	6	299	09-23	CSGP280121P00030000
25.00 P	4.06	+12.78%	2	136	09-28	CSGP280121P00025000
22.50 P	3.46	+35.69%	1	40	09-28	CSGP280121P00022500
20.00 P	1.80	-18.18%	31	73	09-21	CSGP280121P00020000
17.50 P	1.68	+14.29%	1	45	09-28	CSGP280121P00017500
15.00 P	0.97	+8.99%	3	16	09-25	CSGP280121P00015000

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