CSGP Short Volume
CoStar Group, Inc. (CSGP) operates in the Real Estate sector, specifically the Real Estate - Services industry, with a market capitalization near $12.16B, listed on NASDAQ, employing roughly 8,441 people, carrying a beta of 0.80 to the broader market. CoStar Group, Inc. Led by Andrew C. Florance, public since 1998-07-01.
Short volume measures the number of shares sold short on a given day as reported by FINRA. Tracking short volume relative to total volume helps identify unusual bearish sentiment or short-squeeze potential.
- Latest Date
- 2026-10-14
- Short Volume
- 677.6K
- Total Volume
- 1.6M
- Short %
- 42.30%
- 30-Day Avg Short %
- 42.89%
Showing 30 days of FINRA short volume data for CoStar Group, Inc..
Learn how short volume is reported and how to read the data →
CSGP most-active contracts
| Type | Strike | Expiration | Volume | OI | IV | Bid | Ask |
|---|---|---|---|---|---|---|---|
| CALL | $35.00 | Oct 16, 2026 | 80 | 4.6K | 953.3% | $0.05 | $0.10 |
| PUT | $35.00 | Oct 16, 2026 | 72 | 115 | 953.3% | $4.80 | $5.10 |
| CALL | $30.00 | Oct 16, 2026 | 40 | 2.0K | 501.0% | $0.70 | $0.85 |
| PUT | $30.00 | Oct 16, 2026 | 15 | 692 | 501.0% | $0.55 | $0.70 |
Top 4 contracts from the institutional-grade nightly options scan; ranked by volume within the broader S&P 500/400/600 + ETF universe.
Frequently asked CSGP short volume questions
- What is the daily CSGP short volume?
- As of Oct 14, 2026, CoStar Group, Inc. (CSGP) short volume is 677.6K shares against 1.6M total reported volume, or 42.30% short-side. Short volume measures shares sold short during the day; it is flow, not inventory.
- How is CSGP short volume reported?
- FINRA publishes the Daily Short Sale Volume File for trades reported to FINRA TRFs and the FINRA/Nasdaq ADF on a T+1 basis. The headline figure is the count of shares that printed at the short-sale or short-exempt tick across all reporting venues for the symbol; each exchange separately publishes its own daily short-sale data file.
- What does CSGP short volume tell options traders?
- Daily short-sale flow is one input that helps disambiguate dealer-hedging activity from directional bear flow when the chain shows fresh customer call inventory. It is not a clean MM-only proxy: the headline number mixes directional shorting, options-MM delta-hedging, ETF-creation arbitrage, and convertible-arb hedging. Cross-check against gamma-exposure and OI changes for a cleaner read.