CoStar Group (CSGP) Protective Put Calculator
Calculator · free · no signup · CSGPPrice a protective put, zero-cost collar, or put spread on CoStar Group. Annual cost, max loss, upside cap, tax treatment, auto-filled from current CSGP option chain.
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About CoStar Group
CoStar Group (CSGP) is a public Data company, incorporated in Delaware and headquartered in Arlington, VA.
Last close: $31.38 per share (as of 2026-08-18).
Equity grants at CoStar Group typically include restricted stock units (RSUs).
CoStar Group, Inc. is an American provider of information, analytics, and marketing services to the commercial property industry in North America and Europe. Founded in 1987 by Andrew C. Florance and based in Arlington, Virginia, the company operates the CoStar online database and news website and several online marketplaces, including Apartments.com and Homes.com.
Source: Wikipedia (CC BY-SA 4.0)
Andrew Florance founded the company in 1987 to build a commercial real estate database, and its research staff physically verifies property and lease data that is otherwise scattered and private. That proprietary collection is the moat: subscriptions to CoStar Suite are close to mandatory for brokers and appraisers. Apartments.com and, more recently, Homes.com extended the model into residential listings, funded by very large marketing campaigns. Residential expansion is the expensive bet on an established data business. Headquarters are in Arlington, Virginia.
Sources: sec.gov · en.wikipedia.org
OptionsAhoy is an independent tool and is not affiliated with, endorsed by, or sponsored by CoStar Group.
A protective put caps your downside on the CSGP position at a chosen floor; a zero-cost collar pays for that floor by capping the upside. This calculator prices both structures off the current CSGP option chain, with annual cost, max loss, and tax-treatment notes.
Example: a 5,000-share CSGP position at $31.38 is worth $156,900. A 1-year 30%-OTM put on that position typically runs 2-4% of position value per year (about $3,138 to $6,276) before any premium offset from a short call. The calculator prices both structures off CSGP's current option chain so you see the actual cost for your chosen floor, tenor, and cap.
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CoStar Group equity questions
- How much does it cost to hedge CSGP stock?
- The cost of a protective put depends on how far below the current price you set the floor, how long the protection lasts, and CSGP's option-implied volatility. A zero-cost collar lowers that cost by selling away some upside. The calculator above prices both structures off the current CSGP option chain and shows the annual cost, maximum loss, and tax treatment.
- Does CoStar Group grant ISOs, NSOs, or RSUs?
- Equity compensation at CoStar Group typically takes the form of restricted stock units (RSUs). Restricted stock units are taxed as ordinary income when they vest.
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