Historical Stock Price
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Video: Compound Annual Growth Rate (CAGR) Definition
Date Open High Low Close Volume
10/09/2026 $113.70 $115.03 $113.00 $114.51 1.08M
10/12/2026 $114.39 $115.66 $113.17 $115.10 858.20K
10/13/2026 $115.18 $115.29 $112.64 $114.60 1.14M
10/14/2026 $113.99 $115.09 $110.45 $110.86 1.08M
10/15/2026 $110.36 $112.82 $107.80 $112.68 1.21M
Iron Mountain Inc is a provider of information management services. Co. offers a range of services, including digital transformation, data centers, secure records storage, information management, asset lifecycle management, secure destruction, and art storage and logistics. Co. helps businesses to unlock value and intelligence from their stored digital and physical assets. It serves to protect its customers' work. Its segments include Global Records and Information Management (Global RIM) Business and Global Data Center Business.
IRM historical stock prices picture
Iron Mountain (IRM) has the following price history information. Looking back at IRM historical stock prices for the last five trading days, on October 09, 2026, IRM opened at $113.70, traded as high as $115.03 and as low as $113.00, and closed at $114.51. Trading volume was a total of 1.08M shares. On October 12, 2026, IRM opened at $114.39, traded as high as $115.66 and as low as $113.17, and closed at $115.10. Trading volume was a total of 858.20K shares. On October 13, 2026, IRM opened at $115.18, traded as high as $115.29 and as low as $112.64, and closed at $114.60. Trading volume was a total of 1.14M shares. On October 14, 2026, IRM opened at $113.99, traded as high as $115.09 and as low as $110.45, and closed at $110.86. Trading volume was a total of 1.08M shares. On October 15, 2026, IRM opened at $110.36, traded as high as $112.82 and as low as $107.80, and closed at $112.68. Trading volume was a total of 1.21M shares.

IRM Historical Stock Prices By Date:

IRM historical cagr picture

Below, we examine the compound annual growth rate — CAGR for short — of an investment into Iron Mountain shares, starting with a $10,000 purchase of IRM, and working forward through the historical stock price information to today.

Growth of $10,000.00
With Dividends Reinvested

Start date: 10/18/2016
End date: 10/15/2026
Start price/share: $34.15
End price/share: $112.68
Starting shares: 292.83
Ending shares: 501.52
Dividends reinvested/share: $26.12
Total return: 465.12%
Average Annual Total Return: 18.91%
Starting investment: $10,000.00
Ending investment: $56,490.80
Years: 10.00
 
Growth of $10,000.00
Without Dividends Reinvested

Start date: 10/18/2016
End date: 10/15/2026
Start price/share: $34.15
End price/share: $112.68
Dividends collected/share: $26.12
Total return: 306.45%
Average Annual Total Return: 15.06%
Starting investment: $10,000.00
Ending investment: $40,651.52
Years: 10.00
Date Close
10/09/2026$114.51
10/12/2026$115.10
10/13/2026$114.60
10/14/2026$110.86
10/15/2026$112.68
IRM is categorized under the Financials sector; below are some other companies in the same sector:

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Also explore: IRM shares outstanding history

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