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10 /100
COMPONENT-LIMITED
Score updated Oct 13, 2026

IRM — Iron Mountain Incorporated Dilution Risk Tracker

Track IRM dilution risk with DilutionWatch's stock tracker. DilutionScore™ measures dilution risk across 5 factors — lower scores indicate higher risk of share dilution.

⚠️ Not financial advice. Do your own research before making any investment decisions.

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As of October 13, 2026, Iron Mountain Incorporated (IRM) has a DilutionWatch DilutionScore of 10/100, rated LOW dilution risk. This is a component-limited score because one or more material inputs are unavailable or not applicable. Iron Mountain Incorporated has a market capitalization of $34.27B, 297.70M shares outstanding, 1096 institutional holders tracked.

This page includes automatically generated factual summaries from DilutionWatch data. It is not financial advice, not investment research, and not a recommendation. Do your own research. Read the full disclaimer and terms of service.

Score Breakdown

📋 Offering Ability
20
💰Cash Runway—
📊 Float Risk
2
⚠️ Warrant Exposure
15
🔄 Convertible Debt
15

Dilution Forecast

☀️
Clear
No significant dilution signals
model est. 0%
No significant dilution signals detected for IRM.
🔔 Track IRM — Get forecast alerts →

Market Data

Market Cap$34.27B
Shares Outstanding297.70M
Float294.62M
Cash$250.71M
Debt$17.35B
Short InterestN/A

Source-Backed Evidence Depth

This public preview uses stored DilutionWatch fields and linked SEC/market records only. Missing values are not estimated.

FieldCurrent ValueBasis
DilutionScore10/100DilutionWatch score record
Shares Outstanding297.70MVerified float table or market cache
Public Float294.62MVerified float table or market cache
Market Cap$34.27BMarket data cache
Cash RunwayNot applicable / unavailableDilutionWatch score inputs
Shelf CapacityNone in current score inputsSEC-derived dilution fields
ATM CapacityNone in current score inputsSEC-derived dilution fields
Outstanding WarrantsNone in current score inputsSEC-derived dilution fields

Recent source-backed SEC insight records available on this page: 5.

Recent SEC source mix: 4 5.

The page does not infer future share issuance, financing probability, cash needs, management intent, or price impact when source fields are absent.

Institutional Holdings

QoQ: ↑ 14.5% shares (2026Q1 vs prior)
1096 institutional holders · 304.45M shares
#1 VANGUARD CAPITAL MANAGEMENT LLC 37.52M shares
#2 BlackRock, Inc. 33.02M shares
#3 VANGUARD PORTFOLIO MANAGEMENT LLC 25.02M shares
+ 17 more holders Sign up free to view →

Institutional holder totals are aggregated from ownership filings and may use a different share basis or reporting date than public float. They are not a reconciliation against tradeable float.

Short Interest

Short Interest7.00M
Days to Cover4.2
% of Float2.4%
FINRA data as of Sep 30, 2026

Recent SEC Activity

4 INSIDER TRANSACTION 2026-04-07
4 INSIDER TRANSACTION 2026-04-07
4 INSIDER TRANSACTION 2026-04-02
4 INSIDER TRANSACTION 2026-04-02
4 INSIDER TRANSACTION 2026-03-23
Full SEC filing analysis available with free account →

Recent News

No recent news available for this ticker.

Factual IRM Dilution Snapshot

Iron Mountain Incorporated (IRM) has a DilutionScore of 10/100, rated Low dilution risk. Score date: October 13, 2026.

This automatically generated snapshot is assembled from stored DilutionWatch data fields and may contain data-source errors or omissions. It is not financial advice, not investment research, and not a recommendation. Do your own research and review the full disclaimer and terms of service.

DilutionScore History — Last 90 Days

IRM's DilutionScore has held steady at 10/100 (Low risk) for 89 consecutive days across the tracked period.

Period Score Risk Level Duration
Jul 16 – Oct 13, 202610/100LOW89 days

Score recalculated daily from SEC filings and market data. Sign up free for real-time score change alerts.

Share Dilution History

IRM shares outstanding have increased 0.6% from 295.84M (Mar 2026) to 297.48M (May 2026). Each increase represents potential dilution to existing shareholders.

Date Shares Outstanding Public Float Change
May 03, 2026297.48M294.64M▲ 0.23%
May 01, 2026297.48M293.97M▲ 0.34%
Mar 26, 2026295.84M292.94M▲ 0.02%
Mar 17, 2026295.84M292.88M▼ 0.02%
Mar 12, 2026295.84M292.94M▲ 0.03%
Mar 09, 2026295.84M292.85M▲ 0.07%
Mar 05, 2026295.84M292.65M▼ 0.20%

Share counts sourced from verified regulatory filings. Increases indicate dilution events.

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Score Coverage Note