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I

Iron Mountain IRM · USD

Real Estate · Equity Real Estate Investment Trusts (REITs) · US listing · 🇺🇸 United States

S&P 500

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110.85

+4.06%

Close of 9 Nov 2026, in USD

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Reference data, closing prices and charts across 45,000 companies, plus crypto, commodities and currencies.

Largest shareholders

As filed, so dates differ, and a group and its funds can both appear.

HolderSharesStakeChangeFiled
BLACKROCK, INC.33m11.09%+101.7k31 Mar 2026
VANGUARD PORTFOLIO MANAGEMENT LLC25m8.40%+25m31 Mar 2026
VANGUARD CAPITAL MANAGEMENT LLC18.8m6.30%+18.8m31 Mar 2026
STATE STREET CORP17.6m5.89%+662.8k31 Mar 2026
COHEN & STEERS, INC.16.2m5.43%−2.7m31 Mar 2026
GEODE CAPITAL MANAGEMENT, LLC8.5m2.85%+193.5k31 Mar 2026
FMR LLC7.5m2.51%−499.9k31 Mar 2026
MORGAN STANLEY4.7m1.56%+1.1m31 Mar 2026
PRINCIPAL FINANCIAL GROUP INC4.6m1.53%+358.5k31 Mar 2026
DIMENSIONAL FUND ADVISORS LP4.6m1.53%+122.9k31 Mar 2026
NORTHERN TRUST CORP4.2m1.39%−2.1k31 Mar 2026
CHARLES SCHWAB INVESTMENT MANAGEMENT INC4m1.35%+132.7k31 Mar 2026
INVESCO LTD.3.9m1.32%−495.8k31 Mar 2026
LEGAL & GENERAL GROUP PLC3.1m1.05%−221.3k31 Mar 2026
DAIWA SECURITIES GROUP INC.3.1m1.04%−546.6k31 Mar 2026

Short interest

Shares sold short, 15 Oct 2026. US exchange data.

7.1m

+2.1% on the period before. 5.1 days to cover.

Short volume

Share of the day's trading sold short, 4 Nov 2026

46.2%

Last 60 trading days.

Failed deliveries

Shares not delivered on settlement, from the SEC

  • 28 Sept 20262 shares
  • 15 Sept 202698 shares
  • 8 Sept 202628 shares
  • 25 Aug 2026501 shares
  • 24 Aug 2026123 shares

Sources and methodology

Data on this tab
Our data supplier
Chart on the Overview
TradingView

Nothing here is investment advice. Prices can be delayed or wrong, so check with the exchange before relying on them. Data for this page. How we cover markets.