UNP Short Volume

Union Pacific Corporation (UNP) operates in the Industrials sector, specifically the Railroads industry, with a market capitalization near $159.32B, listed on NYSE, employing roughly 30,146 people, carrying a beta of 0.97 to the broader market. Union Pacific Corporation, a prominent American railway enterprise, conducts its primary operations through its subsidiary, Union Pacific Railroad Company. Led by Vincenzo James Vena, public since 1980-01-02.

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
447.1K
Total Volume
907.6K
Short %
49.27%
30-Day Avg Short %
52.95%

Showing 30 days of FINRA short volume data for Union Pacific Corporation.

Learn how short volume is reported and how to read the data →

Frequently asked UNP short volume questions

What is the daily UNP short volume?
As of Jun 30, 2026, Union Pacific Corporation (UNP) short volume is 447.1K shares against 907.6K total reported volume, or 49.27% short-side. Short volume measures shares sold short during the day; it is flow, not inventory.
How is UNP 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 UNP 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.