UNP Short Volume
Union Pacific Corporation (UNP) operates in the Industrials sector, specifically the Railroads industry, with a market capitalization near $157.13B, listed on NYSE, employing roughly 30,146 people, carrying a beta of 0.99 to the broader market. Union Pacific Corporation, through its subsidiary, Union Pacific Railroad Company, operates in the railroad business in the United States. 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
- 2026-05-15
- Short Volume
- 574.6K
- Total Volume
- 1.2M
- Short %
- 49.60%
- 30-Day Avg Short %
- 59.31%
Showing 30 days of FINRA short volume data for Union Pacific Corporation.
Learn how short volume is reported and how to read the data →
UNP most-active contracts
| Type | Strike | Expiration | Volume | OI | IV | Bid | Ask |
|---|---|---|---|---|---|---|---|
| CALL | $280.00 | Jun 18, 2026 | 394 | 13.8K | 23.7% | $3.40 | $4.00 |
Top 1 contracts from the ORATS-sourced nightly scan; ranked by volume within the broader S&P 500/400/600 + ETF universe.
Frequently asked UNP short volume questions
- What is the daily UNP short volume?
- As of May 15, 2026, Union Pacific Corporation (UNP) short volume is 574.6K shares against 1.2M total reported volume, or 49.60% 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.