Options Chain for COSTAR GROUP INC COM (CSGP) - $78.58 as of 10/27/2025 5:18:29 PM EST
Calls
| Strike | Bid | Ask | Premium | Last Price | Change | %Chg | Premium to Strike Price Ratio | Volume | Open Interest | IV | Delta | Gamma | Theta | Last Trade | Last Updated |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 40.00 | 36.50 | 40.30 | 38.40 | % | 0.96 | 0 | 0 | 1.54 | 1.00 | 0.00 | 0.00 | 10/27/2025 4:00:08 PM EST | |||
| 45.00 | 31.40 | 35.30 | 33.35 | % | 0.74 | 0 | 0 | 1.33 | 1.00 | 0.00 | 0.00 | 10/27/2025 4:00:08 PM EST | |||
| 50.00 | 26.50 | 30.50 | 28.50 | % | 0.57 | 0 | 0 | 1.15 | 1.00 | 0.00 | -0.01 | 10/27/2025 4:00:08 PM EST | |||
| 55.00 | 21.60 | 25.70 | 23.65 | % | 0.43 | 0 | 0 | 0.98 | 0.98 | 0.00 | -0.01 | 10/27/2025 4:00:08 PM EST | |||
| 60.00 | 16.80 | 20.80 | 18.80 | % | 0.31 | 0 | 0 | 0.84 | 0.94 | 0.01 | -0.02 | 10/27/2025 4:00:08 PM EST | |||
| 65.00 | 12.40 | 16.20 | 14.30 | % | 0.22 | 0 | 0 | 0.71 | 0.88 | 0.01 | -0.03 | 10/27/2025 4:00:08 PM EST | |||
| 70.00 | 8.10 | 12.10 | 10.10 | 8.98 | 0.00 | 0.00% | 0.14 | 0 | 3 | 0.62 | 0.79 | 0.02 | -0.04 | 10/21/2025 | 10/27/2025 4:00:08 PM EST |
| 75.00 | 6.00 | 6.90 | 6.45 | 6.80 | +0.69 | +11.30% | 0.09 | 1 | 33 | 0.36 | 0.66 | 0.03 | -0.05 | 10/27/2025 | 10/27/2025 4:00:08 PM EST |
| 80.00 | 3.20 | 4.20 | 3.70 | 3.91 | +0.31 | +8.62% | 0.05 | 5 | 59 | 0.35 | 0.50 | 0.03 | -0.05 | 10/27/2025 | 10/27/2025 4:00:08 PM EST |
| 85.00 | 1.50 | 2.30 | 1.90 | 2.10 | -0.10 | -4.55% | 0.02 | 6 | 795 | 0.34 | 0.33 | 0.03 | -0.04 | 10/27/2025 | 10/27/2025 4:00:08 PM EST |
| 90.00 | 0.65 | 1.30 | 0.98 | % | 0.01 | 0 | 0 | 0.35 | 0.20 | 0.02 | -0.03 | 10/27/2025 4:00:08 PM EST | |||
| 95.00 | 0.25 | 1.65 | 0.95 | 0.40 | 0.00 | 0.00% | 0.01 | 0 | 0 | 0.42 | 0.11 | 0.02 | -0.02 | 10/17/2025 | 10/27/2025 4:00:08 PM EST |
| 100.00 | 0.00 | 1.95 | 0.98 | % | 0.01 | 0 | 0 | 0.65 | 0.06 | 0.01 | -0.01 | 10/27/2025 4:00:08 PM EST | |||
| 105.00 | 0.00 | 1.95 | 0.98 | % | 0.01 | 0 | 0 | 0.73 | 0.03 | 0.01 | -0.01 | 10/27/2025 4:00:08 PM EST | |||
| 110.00 | 0.00 | 2.00 | 1.00 | % | 0.01 | 0 | 0 | 0.81 | 0.01 | 0.00 | 0.00 | 10/27/2025 4:00:08 PM EST |
Puts
| Strike | Bid | Ask | Premium | Last Price | Change | %Chg | Premium to Strike Price Ratio | Volume | Open Interest | IV | Delta | Gamma | Theta | Last Trade | Last Updated |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 40.00 | 0.00 | 1.80 | 0.90 | % | 0.02 | 0 | 0 | 1.50 | 0.00 | 0.00 | 0.00 | 10/27/2025 4:00:08 PM EST | |||
| 45.00 | 0.00 | 1.90 | 0.95 | % | 0.02 | 0 | 0 | 1.31 | 0.00 | 0.00 | 0.00 | 10/27/2025 4:00:08 PM EST | |||
| 50.00 | 0.00 | 2.00 | 1.00 | % | 0.02 | 0 | 0 | 1.13 | 0.00 | 0.00 | -0.01 | 10/27/2025 4:00:08 PM EST | |||
| 55.00 | 0.00 | 1.95 | 0.98 | 0.46 | 0.00 | 0.00% | 0.02 | 0 | 1 | 0.94 | -0.02 | 0.00 | -0.01 | 10/17/2025 | 10/27/2025 4:00:08 PM EST |
| 60.00 | 0.05 | 1.90 | 0.98 | 0.81 | 0.00 | 0.00% | 0.02 | 0 | 1 | 0.56 | -0.06 | 0.01 | -0.02 | 10/17/2025 | 10/27/2025 4:00:08 PM EST |
| 65.00 | 0.50 | 1.25 | 0.88 | 0.97 | 0.00 | 0.00% | 0.01 | 0 | 18 | 0.46 | -0.12 | 0.01 | -0.03 | 10/22/2025 | 10/27/2025 4:00:08 PM EST |
| 70.00 | 1.15 | 1.85 | 1.50 | 1.80 | 0.00 | 0.00% | 0.02 | 0 | 83 | 0.41 | -0.21 | 0.02 | -0.04 | 10/22/2025 | 10/27/2025 4:00:08 PM EST |
| 75.00 | 2.45 | 3.40 | 2.93 | 4.05 | 0.00 | 0.00% | 0.04 | 0 | 4 | 0.40 | -0.34 | 0.03 | -0.05 | 10/21/2025 | 10/27/2025 4:00:08 PM EST |
| 80.00 | 4.60 | 5.60 | 5.10 | % | 0.06 | 0 | 0 | 0.38 | -0.50 | 0.03 | -0.05 | 10/27/2025 4:00:08 PM EST | |||
| 85.00 | 8.00 | 8.90 | 8.45 | % | 0.10 | 0 | 0 | 0.38 | -0.67 | 0.03 | -0.04 | 10/27/2025 4:00:08 PM EST | |||
| 90.00 | 10.50 | 14.60 | 12.55 | % | 0.14 | 0 | 0 | 0.60 | -0.80 | 0.02 | -0.03 | 10/27/2025 4:00:08 PM EST | |||
| 95.00 | 15.10 | 19.10 | 17.10 | % | 0.18 | 0 | 0 | 0.65 | -0.89 | 0.02 | -0.02 | 10/27/2025 4:00:08 PM EST | |||
| 100.00 | 19.80 | 23.80 | 21.80 | % | 0.22 | 0 | 0 | 0.71 | -0.94 | 0.01 | -0.01 | 10/27/2025 4:00:08 PM EST | |||
| 105.00 | 24.80 | 28.70 | 26.75 | % | 0.25 | 0 | 0 | 0.78 | -0.97 | 0.01 | -0.01 | 10/27/2025 4:00:08 PM EST | |||
| 110.00 | 29.80 | 33.80 | 31.80 | % | 0.29 | 0 | 0 | 0.84 | -0.99 | 0.00 | 0.00 | 10/27/2025 4:00:08 PM EST |