ISTB Short Volume
iShares Core 1-5 Year USD Bond ETF (ISTB) operates in the Financial Services sector, specifically the Asset Management - Bonds industry, with a market capitalization near $4.75B, listed on NASDAQ, carrying a beta of 0.40 to the broader market. The iShares Core 1-5 Year USD Bond ETF seeks to track the investment results of an index composed of U. public since 2012-10-24.
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
- 86.8K
- Total Volume
- 182.8K
- Short %
- 47.47%
- 30-Day Avg Short %
- 27.79%
Showing 30 days of FINRA short volume data for iShares Core 1-5 Year USD Bond ETF.
Learn how short volume is reported and how to read the data →
Frequently asked ISTB short volume questions
- What is the daily ISTB short volume?
- As of May 15, 2026, iShares Core 1-5 Year USD Bond ETF (ISTB) short volume is 86.8K shares against 182.8K total reported volume, or 47.47% short-side. Short volume measures shares sold short during the day; it is flow, not inventory.
- How is ISTB 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 ISTB 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.