COSTAR GROUP, INC. (CSGP) Most Active Options
The 25 most actively traded COSTAR GROUP, INC. (CSGP) option contracts at the latest daily snapshot, ranked by volume. Each row shows the contract's price, implied volatility, delta, open interest, and how today's volume compares with its own 30-day average — click a contract to analyze it in the OptiView platform.
Data as of Aug 24, 2026, 3:55 PM ET · OPRA data 15 minutes delayed · For information only — not investment advice.
Most Active CSGP Contracts
| Contract | Expiration | DTE | Last | IV | IV rank (30d) | Delta | Open interest | Volume | vs 30d avg |
|---|---|---|---|---|---|---|---|---|---|
| CSGP $25 put | Oct 16, 2026 | 53d | $0.30 | — | 15 | — | 2,226 | 412 | 3.3× avg |
| CSGP $35 call | Oct 16, 2026 | 53d | $1.55 | — | 1 | — | 510 | 266 | 3.1× avg |
| CSGP $35 put | Mar 19, 2027 | 207d | $6.00 | — | 16 | — | 717 | 200 | 354.3× avg |
| CSGP $30 put | Oct 16, 2026 | 53d | $1.20 | — | 16 | — | 447 | 124 | 4.0× avg |
| CSGP $35 put | Oct 16, 2026 | 53d | $3.70 | — | 29 | — | 824 | 120 | 8.8× avg |
| CSGP $45 call | Mar 19, 2027 | 207d | $1.92 | — | 11 | — | 6,189 | 106 | 3.8× avg |
| CSGP $35 call | Sep 18, 2026 | 25d | $0.90 | — | 0 | — | 1,437 | 102 | 1.2× avg |
| CSGP $30 put | Sep 18, 2026 | 25d | $0.69 | 0.0% | 0 | 1.00 | 4,186 | 100 | 0.2× avg |
| CSGP $35 put | Jan 15, 2027 | 144d | $5.20 | — | 14 | — | 44 | 92 | 163.0× avg |
| CSGP $40 call | Sep 18, 2026 | 25d | $0.20 | — | 0 | — | 1,513 | 83 | 2.5× avg |
| CSGP $35 call | Jan 15, 2027 | 144d | $3.40 | — | 9 | — | 1,308 | 59 | 6.4× avg |
| CSGP $30 put | Dec 18, 2026 | 116d | $2.35 | — | 23 | — | 204 | 56 | 3.5× avg |
| CSGP $30 put | Jan 15, 2027 | 144d | $2.65 | — | 20 | — | 2,164 | 54 | 3.3× avg |
| CSGP $45 call | Dec 18, 2026 | 116d | $0.95 | — | 10 | — | 138 | 52 | 1.8× avg |
| CSGP $35 call | Dec 18, 2026 | 116d | $2.95 | — | 8 | — | 170 | 49 | 5.3× avg |
| CSGP $40 call | Dec 18, 2026 | 116d | $1.60 | — | 2 | — | 82 | 39 | 1.4× avg |
| CSGP $40 call | Oct 16, 2026 | 53d | $0.60 | — | 0 | — | 694 | 22 | 0.6× avg |
| CSGP $25 put | Sep 18, 2026 | 25d | $0.12 | — | 23 | — | 868 | 20 | 0.3× avg |
| CSGP $30 call | Oct 16, 2026 | 53d | $4.09 | 0.0% | 0 | 1.00 | 697 | 20 | 2.2× avg |
| CSGP $80 call | Jan 21, 2028 | 515d | $1.20 | — | 14 | — | 338 | 15 | 0.9× avg |
| CSGP $25 put | Dec 18, 2026 | 116d | $0.90 | — | 25 | — | 13,508 | 15 | 0.2× avg |
| CSGP $45 call | Sep 18, 2026 | 25d | $0.07 | — | 4 | — | 3,861 | 11 | 0.3× avg |
| CSGP $30 put | Jun 17, 2027 | 297d | $4.10 | — | 22 | — | 37 | 10 | 0.6× avg |
| CSGP $40 call | Jan 21, 2028 | 515d | $6.50 | — | 6 | — | 220 | 10 | 0.4× avg |
| CSGP $35 call | Jun 17, 2027 | 297d | $5.60 | — | 6 | — | 8 | 10 | 1.1× avg |
Ranked by volume at the latest daily snapshot. "vs 30d avg" compares today's volume with the contract's own 30-day average.
The most active CSGP contract today is the $25 put expiring in 53 days, with 412 contracts traded. Calls dominate the most-active list (14 of the top 25), showing where trading interest concentrates.
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CSGP Options FAQ
Which CSGP option contract is most active today?
The most traded CSGP contract is the $25 put expiring Oct 16, 2026, with 412 contracts traded as of Aug 24, 2026.
How does OptiView rank the most active CSGP options?
The table lists the 25 CSGP contracts with the highest volume at the latest daily snapshot, alongside price, implied volatility, delta, open interest, and each contract's volume versus its own 30-day average.
Methodology. IV rank compares the current 30-day at-the-money implied volatility with its highest and lowest values over the past 52 weeks. Max pain is the strike that minimizes the total payout to option holders at expiration. The call and put walls are the strikes carrying the largest call and put open interest across all expirations. Net gamma exposure (GEX) is measured from the dealer perspective. All statistics are derived from delayed OPRA options data.
Options trading involves significant risk, and losses can exceed your initial investment. Always consult a licensed financial professional before making investment decisions. OptiView does not provide financial advice; all figures on this page are descriptive statistics, not recommendations.