IRM Short Volume
Iron Mountain Incorporated (IRM) operates in the Real Estate sector, specifically the REIT - Specialty industry, with a market capitalization near $37.52B, listed on NYSE, employing roughly 28,850 people, carrying a beta of 1.23 to the broader market. Iron Mountain Incorporated (NYSE: IRM), founded in 1951, is the global leader for storage and information management services. Led by William L. Meaney, public since 1996-02-01.
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
- 181.7K
- Total Volume
- 324.6K
- Short %
- 55.98%
- 30-Day Avg Short %
- 41.83%
Showing 30 days of FINRA short volume data for Iron Mountain Incorporated.
Learn how short volume is reported and how to read the data →
Frequently asked IRM short volume questions
- What is the daily IRM short volume?
- As of May 15, 2026, Iron Mountain Incorporated (IRM) short volume is 181.7K shares against 324.6K total reported volume, or 55.98% short-side. Short volume measures shares sold short during the day; it is flow, not inventory.
- How is IRM 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 IRM 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.