WLK Short Volume
Westlake Corporation (WLK) operates in the Basic Materials sector, specifically the Chemicals - Specialty industry, with a market capitalization near $9.82B, listed on NYSE, employing roughly 15,540 people, carrying a beta of 0.59 to the broader market. Westlake Corporation operates as a global producer and supplier of petrochemicals, polymers, and a diverse range of building materials. Led by Jean-Marc Gilson, public since 2004-08-12.
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
- 2026-06-30
- Short Volume
- 143.7K
- Total Volume
- 340.5K
- Short %
- 42.20%
- 30-Day Avg Short %
- 55.00%
Showing 30 days of FINRA short volume data for Westlake Corporation.
Learn how short volume is reported and how to read the data →
Frequently asked WLK short volume questions
- What is the daily WLK short volume?
- As of Jun 30, 2026, Westlake Corporation (WLK) short volume is 143.7K shares against 340.5K total reported volume, or 42.20% short-side. Short volume measures shares sold short during the day; it is flow, not inventory.
- How is WLK 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 WLK 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.