CoStar Stock Options

Name: CoStar Options Chain Metrics
Creator: Macroaxis
Keywords: CoStar Group options chain, open interest, implied volatility, put call ratio, max pain

CSGP Stock

USD 32.77 -2.21 -6.32%

CoStar's option market is summarized here so the implied moves and skew are visible at a glance. A steep put skew is a common indicator of hedging activity in the options market. For July 17, 2026, CoStar Group lists 33 contracts (15 calls, 18 puts).

Open Interest Against July 17th 2026 Option Contracts

Maximum Pain Price Across 2026-07-17 CoStar Options

Max pain for this expiration is estimated near strike 35.0, the price level where the most options contracts expire worthless and total holder losses are greatest. The largest open-interest clusters are near the 40.0 call strike and the 35.0 put strike.

Moneyness is distributed across 1 in-the-money calls, 14 out-of-the-money calls, 14 in-the-money puts, and 4 out-of-the-money puts.

CoStar Group In-the-Money Call Balance

Call contracts: 1 in-the-money vs 14 out-of-the-money.

CoStar Options Sentiment Snapshot

Open interest totals 2 K puts vs 1.7 K calls (put/call 1.19). Recent volume totals 47.0 puts vs 23.0 calls (put/call 2.04).

Put/Call Open Interest

Options Volume Balance

Rule 16 Summary for the Current Option Cycle

Based on Rule 16, the implied daily move for the 2026-07-17 option cycle is approximately 4.13%. The calculation reflects options-implied volatility rather than forecasted trend. The combined implied volatility across this chain is about 0.66.

Option Chain

In-the-money options on CoStar Group have intrinsic value because the current price already favors the holder. A put is in the money when CoStar's stock trades below the strike.

CoStar's option chain provides a snapshot of all available CoStar contracts for the selected expiration. It allows comparison of premium levels, implied volatility, and CoStar's open interest concentration.

CoStar Current Option Contracts

Across the current expiration, CoStar Group lists 33 option contracts. The aggregate implied volatility across the chain sits at 0.66, reflecting the market's current expectation for near-term price movement. Recent trading volume breaks down to 23.0 on calls and 47.0 on puts (put/call volume ratio: 2.04). The moneyness split shows 1 in-the-money calls, 14 out-of-the-money calls, 14 ITM puts, and 4 OTM puts.

2026-07-17

		Open Int	Strike Price	Current Spread	Last Price
Call	CSGP260717C00100000	0	100.0	0.0 - 0.75	0.75	Out
Call	CSGP260717C00095000	0	95.0	0.0 - 0.5	0.5	Out
Call	CSGP260717C00090000	0	90.0	0.0 - 0.5	0.5	Out
Call	CSGP260717C00085000	17	85.0	0.0 - 0.5	0.5	Out
Call	CSGP260717C00080000	2	80.0	0.0 - 0.55	0.55	Out
Call	CSGP260717C00075000	60	75.0	0.0 - 0.55	0.55	Out
Call	CSGP260717C00070000	184	70.0	0.0 - 0.55	0.55	Out
Call	CSGP260717C00065000	236	65.0	0.0 - 0.55	0.55	Out
Call	CSGP260717C00060000	336	60.0	0.05 - 0.55	0.05	Out
Call	CSGP260717C00055000	124	55.0	0.0 - 0.55	0.55	Out
Call	CSGP260717C00050000	100	50.0	0.1 - 0.3	0.19	Out
Call	CSGP260717C00045000	49	45.0	0.3 - 0.55	0.65	Out
Call	CSGP260717C00040000	375	40.0	0.85 - 1.05	0.95	Out
Call	CSGP260717C00035000	160	35.0	2.15 - 2.4	2.4	Out
Call	CSGP260717C00030000	13	30.0	4.6 - 5.5	5.3	In
Put	CSGP260717P00100000	0	100.0	65.1 - 68.5	65.1	In
Put	CSGP260717P00095000	0	95.0	61.2 - 63.3	61.2	In
Put	CSGP260717P00090000	0	90.0	56.2 - 58.3	56.2	In
Put	CSGP260717P00085000	0	85.0	51.2 - 53.3	51.2	In
Put	CSGP260717P00080000	0	80.0	45.8 - 48.3	45.8	In
Put	CSGP260717P00075000	0	75.0	40.8 - 43.3	40.8	In
Put	CSGP260717P00070000	0	70.0	35.8 - 38.3	35.8	In
Put	CSGP260717P00065000	0	65.0	31.2 - 33.3	31.2	In
Put	CSGP260717P00060000	0	60.0	26.2 - 28.3	25.08	In
Put	CSGP260717P00055000	2	55.0	20.8 - 23.4	20.06	In
Put	CSGP260717P00050000	134	50.0	16.1 - 17.6	15.08	In
Put	CSGP260717P00045000	360	45.0	11.3 - 12.6	11.3	In
Put	CSGP260717P00040000	395	40.0	7.1 - 8.1	7.1	In
Put	CSGP260717P00035000	641	35.0	4.0 - 4.4	3.9	In
Put	CSGP260717P00030000	179	30.0	1.65 - 1.9	1.7	Out
Put	CSGP260717P00025000	2	25.0	0.4 - 0.7	0.4	Out
Put	CSGP260717P00022500	252	22.5	0.2 - 0.4	0.4	Out
Put	CSGP260717P00020000	2	20.0	0.05 - 0.6	0.05	Out

Open Interest

The options chain for CoStar Group reflects how derivatives traders are weighing upside potential against downside protection at current levels. Strike-level data can reveal support and resistance expectations that are sometimes less visible in the underlying equity market.

Open interest for CoStar Group currently totals 3.6 K contracts, with 1.7 K on the call side and 2 K on the put side. At a 1.19 put/call ratio, the data is indicating a mildly bearish lean among options holders. Peak call OI sits at strike 40.0 and peak put OI at strike 35.0, marking the key levels traders are watching. Max pain is estimated around 35.0, which represents the strike where aggregate option-holder losses would be maximized at expiration.

Open Interest for July 17th 2026 Calls

Open Interest for July 17th 2026 Puts

Options Data Overview & Methodology

Directional and hedging setups tied to CoStar options data are evaluated here. Options indicators for CoStar help test positioning ideas with defined payoff boundaries. Max-pain zones and strike density identify crowded price regions into expiration. CoStar has a market cap of 13.38 billion, P/E of 94.53, ROE of 0.3%.

CoStar Group analytics rely on periodic company reporting and market reference feeds, with quality checks and normalization applied. Professional analyst research is incorporated when coverage is available. Option-chain values are sourced from exchange feeds and can be delayed.

Editorial review and methodology oversight provided by: Rifka Kats, Member of Macroaxis Editorial Board

CoStar Corporate Executives

The leadership structure of CoStar Group reveals who sets direction, approves budgets, and monitors management performance. A disciplined governance review can reveal strengths or weaknesses that may not be obvious in financial ratios alone.

Cyndi Eakin	CAO & Cotroller	Profile
Christian Lown	CFO	Profile
Frank Simuro	CTO	Profile