VO Short Volume
Vanguard Morningstar Mid-Cap ETF (VO) operates in the Financial Services sector, specifically the Asset Management industry, with a market capitalization near $217.08B, listed on AMEX, carrying a beta of 1.00 to the broader market. The fund employs an indexing investment approach designed to track the performance of the CRSP US Mid Cap Index, a broadly diversified index of stocks of mid-size U. public since 2004-01-26.
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
- 2026-09-30
- Short Volume
- 930.8K
- Total Volume
- 2.1M
- Short %
- 45.21%
- 30-Day Avg Short %
- 39.90%
Showing 30 days of FINRA short volume data for Vanguard Morningstar Mid-Cap ETF.
Learn how short volume is reported and how to read the data →
Frequently asked VO short volume questions
- What is the daily VO short volume?
- As of Sep 30, 2026, Vanguard Morningstar Mid-Cap ETF (VO) short volume is 930.8K shares against 2.1M total reported volume, or 45.21% short-side. Short volume measures shares sold short during the day; it is flow, not inventory.
- How is VO 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 VO 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.