CoStar Group Inc. (CSGP)
NASDAQ: CSGP
· Real-Time Price · USD
83.99
0.90 (1.08%)
At close: Sep 26, 2025, 3:59 PM
84.10
0.13%
After-hours: Sep 26, 2025, 04:59 PM EDT
CSGP Option Overview
Overview for all option chains of CSGP. As of September 28, 2025, CSGP options have an IV of 58.75% and an IV rank of 190.2%. The volume is 143 contracts, which is 28.77% of average daily volume of 497 contracts. The volume put-call ratio is 0.55, indicating a bullish sentiment in the market.
Implied Volatility
Implied Volatility (30d)
58.75%IV Rank
100%Historical Volatility
22.1%IV Low
34.69% on Jul 28, 2025IV High
47.34% on Sep 25, 2025Open Interest (OI)
Today's Open Interest
27,843Put-Call Ratio
0.44Put Open Interest
8,525Call Open Interest
19,318Open Interest Avg (30-day)
24,350Today vs Open Interest Avg (30-day)
114.34%Option Volume
Today's Volume
143Put-Call Ratio
0.55Put Volume
51Call Volume
92Volume Avg (30-day)
497Today vs Volume Avg (30-day)
28.77%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 |
| Oct 17, 2025 | 38 | 7 | 0.18 | 6,181 | 2,184 | 0.35 | 58.75% | 85 |
| Nov 21, 2025 | 34 | 30 | 0.88 | 255 | 225 | 0.88 | 50.21% | 95 |
| Jan 16, 2026 | 10 | 3 | 0.3 | 9,690 | 3,339 | 0.34 | 41.27% | 85 |
| Mar 20, 2026 | 2 | 0 | 0 | 1,873 | 643 | 0.34 | 39.31% | 80 |
| Apr 17, 2026 | 0 | 0 | 0 | 12 | 1 | 0.08 | 38.19% | 85 |
| Jun 18, 2026 | 0 | 0 | 0 | 324 | 1,626 | 5.02 | 38.18% | 90 |
| Sep 18, 2026 | 2 | 0 | 0 | 125 | 272 | 2.18 | 36.22% | 90 |
| Jan 15, 2027 | 6 | 11 | 1.83 | 839 | 235 | 0.28 | 35.25% | 70 |
| Jan 21, 2028 | 0 | 0 | 0 | 19 | 0 | 0 | 31.74% | 45 |