Price Alert

CoStar Group Inc. (CSGP)

NASDAQ: CSGP · Real-Time Price · USD

89.10

1.24 (1.41%)

At close: Sep 04, 2025, 3:59 PM

89.13

0.03%

After-hours: Sep 04, 2025, 07:28 PM EDT

CSGP Option Overview

Overview for all option chains of CSGP. As of September 04, 2025, CSGP options have an IV of 57.23% and an IV rank of 219.95%. The volume is 657 contracts, which is 89.27% of average daily volume of 736 contracts. The volume put-call ratio is 0.03, indicating a bullish sentiment in the market.

Implied Volatility

Implied Volatility (30d)

57.23%

IV Rank

219.95%

Historical Volatility

31.44%

IV Low

34.94% on Sep 19, 2024

IV High

45.07% on Aug 28, 2025

Open Interest (OI)

Today's Open Interest

34,575

Put-Call Ratio

0.84

Put Open Interest

15,832

Call Open Interest

18,743

Open Interest Avg (30-day)

31,959

Today vs Open Interest Avg (30-day)

108.19%

Option Volume

Today's Volume

657

Put-Call Ratio

0.03

Put Volume

Call Volume

636

Volume Avg (30-day)

736

Today vs Volume Avg (30-day)

89.27%

Option Chain Statistics

This table provides a comprehensive overview of all CSGP options grouped by their expiration dates.

Expiration	Call Vol	Put Vol	P/C Vol	Call OI	Put OI	P/C OI	Implied Volatility	Max Pain
Sep 19, 2025	563	12	0.02	4,752	7,755	1.63	57.23%	90
Oct 17, 2025	68	1	0.01	4,317	1,996	0.46	37.48%	85
Jan 16, 2026	3	8	2.67	7,620	3,333	0.44	35.85%	85
Mar 20, 2026	2	0	0	747	635	0.85	35.99%	80
Apr 17, 2026	0	0	0	11	1	0.09	33.72%	85
Jun 18, 2026	0	0	0	327	1,623	4.96	36.41%	90
Sep 18, 2026	0	0	0	126	264	2.1	35.23%	90
Jan 15, 2027	0	0	0	843	225	0.27	33.98%	70