WSO Short Volume
Watsco, Inc. (WSO) operates in the Industrials sector, specifically the Industrial - Distribution industry, with a market capitalization near $12.89B, listed on NYSE, employing roughly 7,000 people, carrying a beta of 1.04 to the broader market. Watsco, Inc. Led by Albert H. Nahmad, public since 1984-06-07.
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
- 2026-08-14
- Short Volume
- 81.3K
- Total Volume
- 126.6K
- Short %
- 64.24%
- 30-Day Avg Short %
- 72.95%
Showing 30 days of FINRA short volume data for Watsco, Inc..
Learn how short volume is reported and how to read the data →
WSO most-active contracts
| Type | Strike | Expiration | Volume | OI | IV | Bid | Ask |
|---|---|---|---|---|---|---|---|
| CALL | $310.00 | Aug 21, 2026 | 0 | 926 | 29.5% | $3.10 | $8.00 |
| CALL | $320.00 | Aug 21, 2026 | 0 | 944 | 32.1% | $0.50 | $5.00 |
Top 2 contracts from the institutional-grade nightly options scan; ranked by volume within the broader S&P 500/400/600 + ETF universe.
Frequently asked WSO short volume questions
- What is the daily WSO short volume?
- As of Aug 14, 2026, Watsco, Inc. (WSO) short volume is 81.3K shares against 126.6K total reported volume, or 64.24% short-side. Short volume measures shares sold short during the day; it is flow, not inventory.
- How is WSO 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 WSO 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.