IRM Short Volume

Iron Mountain Incorporated (IRM) operates in the Real Estate sector, specifically the REIT - Specialty industry, with a market capitalization near $39.40B, listed on NYSE, employing roughly 28,850 people, carrying a beta of 1.22 to the broader market. Established in 1951, Iron Mountain Incorporated (NYSE: IRM) has become the world's foremost authority in storage and information management solutions. 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
2026-06-30
Short Volume
287.5K
Total Volume
504.9K
Short %
56.94%
30-Day Avg Short %
46.83%

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 Jun 30, 2026, Iron Mountain Incorporated (IRM) short volume is 287.5K shares against 504.9K total reported volume, or 56.94% 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.