Options Chain for COSTAR GROUP INC COM (CSGP) - $31.12 as of 8/11/2026 8:43:34 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 17.50 | 12.60 | 14.70 | 13.65 | 11.10 | 0.00 | 0.00% | 0.78 | 0 | 16 | 3.17 | 1.00 | 0.00 | 0.00 | 7/15/2026 | 8/11/2026 3:59:58 PM EST |
| 20.00 | 10.10 | 12.60 | 11.35 | % | 0.57 | 0 | 0 | 2.78 | 1.00 | 0.00 | 0.00 | 8/11/2026 3:59:58 PM EST | |||
| 22.50 | 7.80 | 9.30 | 8.55 | 6.70 | 0.00 | 0.00% | 0.38 | 0 | 5 | 1.60 | 1.00 | 0.00 | 0.00 | 7/29/2026 | 8/11/2026 3:59:58 PM EST |
| 25.00 | 5.40 | 6.80 | 6.10 | 5.60 | 0.00 | 0.00% | 0.24 | 0 | 238 | 1.18 | 1.00 | 0.00 | 0.00 | 8/7/2026 | 8/11/2026 3:59:58 PM EST |
| 30.00 | 0.40 | 2.05 | 1.23 | 1.50 | -0.45 | -23.08% | 0.04 | 19 | 926 | 0.59 | 0.73 | 0.13 | -0.06 | 8/11/2026 | 8/11/2026 3:59:58 PM EST |
| 35.00 | 0.05 | 0.30 | 0.18 | 0.15 | -0.05 | -25.00% | 0.01 | 1 | 1,500 | 0.54 | 0.08 | 0.07 | -0.02 | 8/11/2026 | 8/11/2026 3:59:58 PM EST |
| 40.00 | 0.00 | 0.30 | 0.15 | 0.10 | 0.00 | 0.00% | 0.00 | 0 | 1,982 | 1.11 | 0.00 | 0.00 | 0.00 | 8/10/2026 | 8/11/2026 3:59:58 PM EST |
| 45.00 | 0.00 | 0.30 | 0.15 | 0.12 | 0.00 | 0.00% | 0.00 | 0 | 22 | 1.48 | 0.00 | 0.00 | 0.00 | 8/5/2026 | 8/11/2026 3:59:58 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 17.50 | 0.00 | 0.15 | 0.08 | 0.05 | 0.00 | 0.00% | 0.00 | 0 | 86 | 2.11 | 0.00 | 0.00 | 0.00 | 8/10/2026 | 8/11/2026 3:59:58 PM EST |
| 20.00 | 0.00 | 0.15 | 0.08 | 0.10 | +0.05 | +100.00% | 0.00 | 1 | 57 | 1.69 | 0.00 | 0.00 | 0.00 | 8/11/2026 | 8/11/2026 3:59:58 PM EST |
| 22.50 | 0.00 | 0.20 | 0.10 | 0.14 | 0.00 | 0.00% | 0.00 | 0 | 418 | 1.41 | 0.00 | 0.00 | 0.00 | 8/10/2026 | 8/11/2026 3:59:58 PM EST |
| 25.00 | 0.00 | 0.10 | 0.05 | 0.04 | -0.03 | -42.86% | 0.00 | 33 | 2,347 | 0.89 | 0.00 | 0.00 | 0.00 | 8/11/2026 | 8/11/2026 3:59:58 PM EST |
| 30.00 | 0.35 | 0.60 | 0.48 | 0.40 | -0.40 | -50.00% | 0.02 | 6,243 | 2,252 | 0.50 | -0.27 | 0.13 | -0.06 | 8/11/2026 | 8/11/2026 3:59:58 PM EST |
| 35.00 | 2.75 | 4.50 | 3.63 | 5.55 | 0.00 | 0.00% | 0.10 | 0 | 235 | 1.08 | -0.92 | 0.07 | -0.02 | 8/6/2026 | 8/11/2026 3:59:58 PM EST |
| 40.00 | 7.50 | 9.90 | 8.70 | % | 0.22 | 0 | 0 | 1.90 | -1.00 | 0.00 | 0.00 | 8/11/2026 3:59:58 PM EST | |||
| 45.00 | 12.80 | 14.90 | 13.85 | 18.10 | 0.00 | 0.00% | 0.31 | 0 | 2 | 2.38 | -1.00 | 0.00 | 0.00 | 7/23/2026 | 8/11/2026 3:59:58 PM EST |