CSGP · Costar Group, Inc.

Track CSGP — free

$32.38 -0.67 (-2.03%) At close · Aug 14

Market Cap

$13.06B

405.20M

Options Chain

Underlying $32.38 · at close Aug 14, 2026 Options Calculator

Positioning

Aug 21, 2026 · 6 days to expiry · 16 contracts · mixed snapshot sessions · Jul 15, 2026–Aug 14, 2026; 2 unknown

Put / call OI

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dated and unknown snapshot sessions

Open interest

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dated and unknown snapshot sessions

Volume

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dated and unknown snapshot sessions

Chain

Click any strike for greeks, breakeven and the calculator

Expiry

Aug 21 6d Sep 18 34d Oct 16 62d Dec 18 125d Jan 15 153d Mar 19 216d Jun 17 306d Jan 21 524d

Calls						Puts
OI	Vol	IV	Δ	Last	Strike	Last	Δ	IV	Vol	OI
16	10	—	—	$11.10		$0.05	-0.04	294.4%	1	86
Call · $17.5 In the money Snapshot session Jul 15, 2026 Last $11.10 Breakeven $28.60 Implied vol — Delta — Gamma — Theta — Vega — Open interest 16 Model this call Put · $17.5 Snapshot session Aug 10, 2026 Last $0.05 Breakeven $17.45 Implied vol 294.4% Delta -0.04 ≈4% ITM Gamma 0.007 Theta -0.083 Vega 0.003 Open interest 86 Model this put
0	—	—	—	—		$0.05	-0.058	254.3%	2	59
Call · $20 In the money Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $20 Snapshot session Aug 14, 2026 Last $0.05 Breakeven $19.95 Implied vol 254.3% Delta -0.058 ≈6% ITM Gamma 0.01 Theta -0.096 Vega 0.006 Open interest 59 Model this put
5	5	125.1%	0.988	$6.70		$0.14	-0.033	155.8%	1	418
Call · $22.5 In the money Snapshot session Jul 29, 2026 Last $6.70 Breakeven $29.20 Implied vol 125.1% Delta 0.988 ≈99% ITM Gamma 0.006 Theta -0.015 Vega 0.002 Open interest 5 Model this call Put · $22.5 Snapshot session Aug 10, 2026 Last $0.14 Breakeven $22.36 Implied vol 155.8% Delta -0.033 ≈3% ITM Gamma 0.011 Theta -0.037 Vega 0.004 Open interest 418 Model this put
238	1	123.1%	0.95	$5.75		$0.03	-0.05	123.5%	27	2.3k
Call · $25 In the money Snapshot session Aug 12, 2026 Last $5.75 Breakeven $30.75 Implied vol 123.1% Delta 0.95 ≈95% ITM Gamma 0.019 Theta -0.044 Vega 0.004 Open interest 238 Model this call Put · $25 Snapshot session Aug 13, 2026 Last $0.03 Breakeven $24.97 Implied vol 123.5% Delta -0.05 ≈5% ITM Gamma 0.019 Theta -0.042 Vega 0.004 Open interest 2.3k Model this put
867	39	58.4%	0.846	$2.73		$0.10	-0.126	52.1%	18	8.1k
Call · $30 In the money Snapshot session Aug 14, 2026 Last $2.73 Breakeven $32.73 Implied vol 58.4% Delta 0.846 ≈85% ITM Gamma 0.092 Theta -0.048 Vega 0.011 Open interest 867 Model this call Put · $30 Snapshot session Aug 14, 2026 Last $0.10 Breakeven $29.90 Implied vol 52.1% Delta -0.126 ≈13% ITM Gamma 0.092 Theta -0.035 Vega 0.011 Open interest 8.1k Model this put
Underlying $32.38
1.5k	8	60.6%	0.19	$0.25		$3.03	-0.778	69.2%	6	235
Call · $35 Snapshot session Aug 14, 2026 Last $0.25 Breakeven $35.25 Implied vol 60.6% Delta 0.19 ≈19% ITM Gamma 0.102 Theta -0.054 Vega 0.012 Open interest 1.5k Model this call Put · $35 In the money Snapshot session Aug 14, 2026 Last $3.03 Breakeven $31.97 Implied vol 69.2% Delta -0.778 ≈78% ITM Gamma 0.099 Theta -0.065 Vega 0.012 Open interest 235 Model this put
2k	21	94%	0.058	$0.20		—	—	—	—	0
Call · $40 Snapshot session Aug 14, 2026 Last $0.20 Breakeven $40.20 Implied vol 94% Delta 0.058 ≈6% ITM Gamma 0.028 Theta -0.035 Vega 0.005 Open interest 2k Model this call Put · $40 In the money Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
22	1	139.3%	0.051	$0.12		$18.10	-0.936	149.5%	8	2
Call · $45 Snapshot session Aug 5, 2026 Last $0.12 Breakeven $45.12 Implied vol 139.3% Delta 0.051 ≈5% ITM Gamma 0.017 Theta -0.047 Vega 0.005 Open interest 22 Model this call Put · $45 In the money Snapshot session Jul 23, 2026 Last $18.10 Breakeven $26.90 Implied vol 149.5% Delta -0.936 ≈94% ITM Gamma 0.019 Theta -0.058 Vega 0.005 Open interest 2 Model this put

About this data

Each contract's last price, volume, greeks, implied volatility and open interest belongs to the snapshot session shown in its details; unknown means the provider omitted the timestamp. This chain has mixed snapshot sessions · Jul 15, 2026–Aug 14, 2026; 2 unknown. Cross-contract positioning totals are shown only when every returned row has the same known session. Bid and ask are not included on this plan.

In-the-money strikes are tinted, deepening toward the money, and the bar beside each open-interest figure scales to the heaviest strike shown.

Key facts CIK 1057352 CUSIP 22160N109 13F (30d) 723 filings 686 filers Visit website