JMST Short Volume
JPMorgan Ultra-Short Municipal Income ETF (JMST) operates in the Financial Services sector, specifically the Asset Management - Income industry, with a market capitalization near $6.23B, listed on CBOE, carrying a beta of 0.08 to the broader market. Under normal circumstances, the fund invests at least 80% of its assets in municipal securities, the income from which is exempt from federal income tax. public since 2018-10-22.
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
- 2026-05-15
- Short Volume
- 532.3K
- Total Volume
- 737.9K
- Short %
- 72.13%
- 30-Day Avg Short %
- 35.12%
Showing 30 days of FINRA short volume data for JPMorgan Ultra-Short Municipal Income ETF.
Learn how short volume is reported and how to read the data →
Frequently asked JMST short volume questions
- What is the daily JMST short volume?
- As of May 15, 2026, JPMorgan Ultra-Short Municipal Income ETF (JMST) short volume is 532.3K shares against 737.9K total reported volume, or 72.13% short-side. Short volume measures shares sold short during the day; it is flow, not inventory.
- How is JMST 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 JMST 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.