Options Chain for COSTAR GROUP INC COM (CSGP) - $66.89 as of 12/26/2025 2:43:38 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 35.00 | 30.30 | 34.10 | 32.20 | % | 0.92 | 0 | 0 | 1.51 | 1.00 | 0.00 | 0.00 | 12/26/2025 3:59:59 PM EST | |||
| 40.00 | 25.30 | 29.20 | 27.25 | % | 0.68 | 0 | 0 | 1.28 | 1.00 | 0.00 | 0.00 | 12/26/2025 3:59:59 PM EST | |||
| 45.00 | 21.30 | 23.60 | 22.45 | % | 0.50 | 0 | 0 | 0.93 | 0.99 | 0.00 | -0.01 | 12/26/2025 3:59:59 PM EST | |||
| 50.00 | 16.10 | 18.50 | 17.30 | % | 0.35 | 0 | 0 | 0.71 | 0.95 | 0.01 | -0.02 | 12/26/2025 3:59:59 PM EST | |||
| 55.00 | 12.10 | 13.80 | 12.95 | % | 0.24 | 0 | 0 | 0.59 | 0.89 | 0.02 | -0.03 | 12/26/2025 3:59:59 PM EST | |||
| 60.00 | 8.10 | 9.20 | 8.65 | 7.40 | 0.00 | 0.00% | 0.14 | 0 | 304 | 0.39 | 0.78 | 0.03 | -0.03 | 12/18/2025 | 12/26/2025 3:59:59 PM EST |
| 65.00 | 4.40 | 6.70 | 5.55 | 4.99 | +0.59 | +13.41% | 0.09 | 1 | 130 | 0.41 | 0.63 | 0.04 | -0.04 | 12/26/2025 | 12/26/2025 3:59:59 PM EST |
| 70.00 | 2.00 | 3.20 | 2.60 | 2.50 | 0.00 | 0.00% | 0.04 | 0 | 2 | 0.34 | 0.42 | 0.04 | -0.04 | 12/22/2025 | 12/26/2025 3:59:59 PM EST |
| 75.00 | 0.80 | 1.45 | 1.13 | 1.20 | 0.00 | 0.00% | 0.02 | 0 | 156 | 0.33 | 0.23 | 0.04 | -0.03 | 12/24/2025 | 12/26/2025 3:59:59 PM EST |
| 80.00 | 0.40 | 1.25 | 0.83 | 0.50 | 0.00 | 0.00% | 0.01 | 0 | 6 | 0.39 | 0.12 | 0.02 | -0.02 | 12/23/2025 | 12/26/2025 3:59:59 PM EST |
| 85.00 | 0.00 | 0.95 | 0.48 | % | 0.01 | 0 | 0 | 0.52 | 0.05 | 0.01 | -0.01 | 12/26/2025 3:59:59 PM EST | |||
| 90.00 | 0.00 | 0.95 | 0.48 | % | 0.01 | 0 | 0 | 0.60 | 0.02 | 0.00 | 0.00 | 12/26/2025 3:59:59 PM EST | |||
| 95.00 | 0.00 | 1.00 | 0.50 | % | 0.01 | 0 | 0 | 0.68 | 0.01 | 0.00 | 0.00 | 12/26/2025 3:59:59 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 35.00 | 0.00 | 0.75 | 0.38 | % | 0.01 | 0 | 0 | 1.17 | 0.00 | 0.00 | 0.00 | 12/26/2025 3:59:59 PM EST | |||
| 40.00 | 0.00 | 0.75 | 0.38 | % | 0.01 | 0 | 0 | 0.97 | 0.00 | 0.00 | 0.00 | 12/26/2025 3:59:59 PM EST | |||
| 45.00 | 0.00 | 0.75 | 0.38 | % | 0.01 | 0 | 0 | 0.79 | -0.01 | 0.00 | -0.01 | 12/26/2025 3:59:59 PM EST | |||
| 50.00 | 0.05 | 0.75 | 0.40 | 0.45 | 0.00 | 0.00% | 0.01 | 0 | 2 | 0.49 | -0.05 | 0.01 | -0.02 | 12/19/2025 | 12/26/2025 3:59:59 PM EST |
| 55.00 | 0.30 | 1.20 | 0.75 | 1.05 | 0.00 | 0.00% | 0.01 | 0 | 70 | 0.46 | -0.11 | 0.02 | -0.03 | 12/18/2025 | 12/26/2025 3:59:59 PM EST |
| 60.00 | 0.95 | 1.90 | 1.43 | % | 0.02 | 0 | 0 | 0.41 | -0.22 | 0.03 | -0.03 | 12/26/2025 3:59:59 PM EST | |||
| 65.00 | 2.25 | 3.40 | 2.83 | 2.95 | 0.00 | 0.00% | 0.04 | 0 | 102 | 0.38 | -0.37 | 0.04 | -0.04 | 12/24/2025 | 12/26/2025 3:59:59 PM EST |
| 70.00 | 3.80 | 6.10 | 4.95 | 6.10 | 0.00 | 0.00% | 0.07 | 0 | 125 | 0.33 | -0.58 | 0.04 | -0.04 | 12/23/2025 | 12/26/2025 3:59:59 PM EST |
| 75.00 | 7.50 | 10.20 | 8.85 | % | 0.12 | 0 | 0 | 0.52 | -0.77 | 0.04 | -0.03 | 12/26/2025 3:59:59 PM EST | |||
| 80.00 | 12.40 | 14.60 | 13.50 | % | 0.17 | 0 | 0 | 0.59 | -0.88 | 0.02 | -0.02 | 12/26/2025 3:59:59 PM EST | |||
| 85.00 | 16.30 | 19.00 | 17.65 | % | 0.21 | 0 | 0 | 0.73 | -0.95 | 0.01 | -0.01 | 12/26/2025 3:59:59 PM EST | |||
| 90.00 | 21.00 | 24.90 | 22.95 | % | 0.26 | 0 | 0 | 0.80 | -0.98 | 0.00 | 0.00 | 12/26/2025 3:59:59 PM EST | |||
| 95.00 | 26.20 | 29.80 | 28.00 | % | 0.29 | 0 | 0 | 0.87 | -0.99 | 0.00 | 0.00 | 12/26/2025 3:59:59 PM EST |