MPC Short Volume
Marathon Petroleum Corporation (MPC) operates in the Energy sector, specifically the Oil & Gas Refining & Marketing industry, with a market capitalization near $115.44B, listed on NYSE, employing roughly 18,500 people, carrying a beta of 0.53 to the broader market. Marathon Petroleum Corporation (MPC) functions as a prominent integrated energy enterprise, primarily concentrating its downstream operations across the United States. Led by Maryann T. Mannen, public since 2011-06-24.
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
- 2026-09-30
- Short Volume
- 427.9K
- Total Volume
- 635.9K
- Short %
- 67.30%
- 30-Day Avg Short %
- 58.99%
Showing 30 days of FINRA short volume data for Marathon Petroleum Corporation.
Learn how short volume is reported and how to read the data →
Frequently asked MPC short volume questions
- What is the daily MPC short volume?
- As of Sep 30, 2026, Marathon Petroleum Corporation (MPC) short volume is 427.9K shares against 635.9K total reported volume, or 67.30% short-side. Short volume measures shares sold short during the day; it is flow, not inventory.
- How is MPC 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 MPC 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.