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 Oct 9, 2026, 3:55 PM ET · OPRA data 15 minutes delayed · For information only — not investment advice.

Last close
$29.63
52-week range
$26.92 – $78.23
ATM IV (30d)
63.5%
IV rank
45 / 100
Moderate
Expected move
±$2.61 (±8.8%)
Put/call OI
0.57
Call-heavy
Max pain
$30
↑ 1.2% above close
Next earnings
Oct 25, 2026

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Most Active CSGP Contracts

ContractExpirationDTELastIV IV rank (30d)DeltaOpen interestVolumevs 30d avg
CSGP $35 call Oct 16, 2026 7d $0.20 90.0% 100 0.10 1,883 3,245 3.0× avg
CSGP $30 call Oct 16, 2026 7d $0.85 63.5% 0 0.47 1,692 636 1.0× avg
CSGP $40 call Jan 15, 2027 98d $0.75 53.4% 13 0.18 430 200 15.0× avg
CSGP $30 put Dec 18, 2026 70d $2.90 58.4% 38 -0.45 1,310 135 2.2× avg
CSGP $30 put Oct 16, 2026 7d $1.19 72.3% 0 -0.52 812 120 1.0× avg
CSGP $22.5 put Jan 15, 2027 98d $0.68 57.4% 16 -0.13 290 115 21.7× avg
CSGP $40 call Nov 20, 2026 42d $0.31 62.5% 26 0.10 62 101 4.6× avg
CSGP $30 put Sep 17, 2027 343d $5.50 53.0% 7 -0.38 11 36 3.1× avg
CSGP $30 put Nov 20, 2026 42d $2.55 59.7% 52 -0.47 143 30 0.5× avg
CSGP $45 call Mar 19, 2027 161d $0.85 52.8% 12 0.17 8,025 25 4.9× avg
CSGP $50 call Dec 18, 2026 70d $0.22 74.2% 37 0.08 94 18 6.8× avg
CSGP $30 call Nov 20, 2026 42d $2.30 60.8% 100 0.53 426 18 0.4× avg
CSGP $35 call Nov 20, 2026 42d $0.81 62.3% 75 0.26 276 15 0.6× avg
CSGP $25 call Apr 16, 2027 189d $7.64 57.6% 57 0.75 20 12 15.0× avg
CSGP $25 put Dec 18, 2026 70d $0.90 56.7% 9 -0.20 13,610 11 1.8× avg
CSGP $30 call Dec 18, 2026 70d $2.75 56.9% 68 0.54 176 10 0.2× avg
CSGP $17.5 put Jan 19, 2029 833d $2.20 54.2% 27 -0.12 10 8 1.1× avg
CSGP $40 call Apr 16, 2027 189d $1.80 53.0% 12 0.30 3 8 0.6× avg
CSGP $35 call Mar 19, 2027 161d $2.55 53.3% 29 0.41 150 7 0.4× avg
CSGP $25 put Nov 20, 2026 42d $0.61 62.3% 17 -0.17 415 7 1.1× avg
CSGP $40 call Mar 19, 2027 161d $1.45 51.3% 9 0.26 358 6 0.5× avg
CSGP $20 put Jan 19, 2029 833d $3.03 53.3% 25 -0.16 32 5 0.7× avg
CSGP $85 call Dec 18, 2026 70d $0.01 90.3% 67 0.01 3,085 5 1.9× avg
CSGP $30 call Apr 16, 2027 189d $4.75 51.0% 7 0.58 0 4 1.5× avg
CSGP $60 put Jan 15, 2027 98d $30.11 91.4% 47 -0.89 0 4 5.6× 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 $35 call expiring in 7 days, with 3,245 contracts traded. Calls dominate the most-active list (15 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 $35 call expiring Oct 16, 2026, with 3,245 contracts traded as of Oct 9, 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.