SUB Short Volume
iShares Short-Term National Muni Bond ETF (SUB) operates in the Financial Services sector, specifically the Asset Management - Bonds industry, with a market capitalization near $11.14B, listed on AMEX, carrying a beta of 0.27 to the broader market. The iShares Short-Term National Muni Bond ETF seeks to track the investment results of an index composed of investment-grade U. public since 2008-11-19.
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
- 2026-06-01
- Short Volume
- 139.3K
- Total Volume
- 379.6K
- Short %
- 36.70%
- 30-Day Avg Short %
- 53.62%
Showing 30 days of FINRA short volume data for iShares Short-Term National Muni Bond ETF.
Learn how short volume is reported and how to read the data →
Frequently asked SUB short volume questions
- What is the daily SUB short volume?
- As of Jun 1, 2026, iShares Short-Term National Muni Bond ETF (SUB) short volume is 139.3K shares against 379.6K total reported volume, or 36.70% short-side. Short volume measures shares sold short during the day; it is flow, not inventory.
- How is SUB 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 SUB 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.