What if you'd held IRM?
A $1,000 investment in Iron Mountain Incorporated (Delaware)Common Stock REIT (IRM) at the month-end close of 1996-02 would be worth $107,654 at the close of 2026-08 — +10665.4% total return, dividends reinvested. The same $1,000 in the S&P 500 would be worth $12,036.
Your scenario
Result
If you'd bought $1,000 at the start of each year
Value of $1,000 invested on January 1 of each year, held to 2026-08, dividends included.
Every year, $1,000 from 1996
| Year | Value of $1,000 | Year return |
|---|---|---|
| 1996 | $1,000 | — |
| 1997 | $1,190 | +19.0% |
| 1998 | $1,789 | +50.3% |
| 1999 | $1,950 | +9.0% |
| 2000 | $1,841 | -5.6% |
| 2001 | $2,172 | +18.0% |
| 2002 | $2,456 | +13.1% |
| 2003 | $2,942 | +19.8% |
| 2004 | $3,403 | +15.7% |
| 2005 | $4,711 | +38.5% |
| 2006 | $4,613 | -2.1% |
| 2007 | $6,197 | +34.3% |
| 2008 | $4,140 | -33.2% |
| 2009 | $3,810 | -8.0% |
| 2010 | $4,252 | +11.6% |
| 2011 | $5,393 | +26.8% |
| 2012 | $6,302 | +16.9% |
| 2013 | $6,385 | +1.3% |
| 2014 | $9,457 | +48.1% |
| 2015 | $7,028 | -25.7% |
| 2016 | $8,958 | +27.5% |
| 2017 | $11,069 | +23.6% |
| 2018 | $10,187 | -8.0% |
| 2019 | $10,785 | +5.9% |
| 2020 | $10,891 | +1.0% |
| 2021 | $20,448 | +87.8% |
| 2022 | $20,433 | -0.1% |
| 2023 | $29,939 | +46.5% |
| 2024 | $46,250 | +54.5% |
| 2025 | $37,816 | -18.2% |
| 2026 | $56,492 | +49.4% |
Best and worst month-end to buy
The best single month-end close to have bought IRM was 1996-03 ($1.09): $1,000 then is $112,000 today. The worst was 2026-05 ($127): $1,000 then is $958.
FAQ
What would $1,000 in IRM be worth today?
A $1,000 investment in Iron Mountain Incorporated (Delaware)Common Stock REIT (IRM) at the start of 1996 would be worth about $107,654 today, a total return of +10665.4%. Dividends are reinvested in these figures.
What were the best and worst years for IRM?
Iron Mountain Incorporated (Delaware)Common Stock REIT (IRM)'s strongest calendar year since 1996 was 2021, a +87.8% return — $1,000 held through that year became about $1,878 by year-end. Its weakest year was 2008, at -33.2%.
Does the calculator include dividends and splits?
Yes where available. Prices are adjusted for both stock splits and reinvested dividends (total return), the same measure brokerages use.
How much would $100 per month in IRM have grown?
Investing $100 at the end of every month since 1996-02 would have grown to about $593,708 on $36,700 invested.
Did IRM beat the S&P 500?
Over the same period, $1,000 in the S&P 500 index would be worth $12,036. IRM beat the S&P 500 by +794.5% in total return.
Is this investment advice?
No. Wall Street Regrets is an entertainment and education tool. Every number is a historical calculation, not a prediction, and past performance never guarantees future results.
Methodology
Iron Mountain Incorporated (Delaware)Common Stock REIT (IRM) historical total-return data from 1996-02 to 2026-08, reduced to month-end closes for the tables above.
Returns use adjusted close prices from Yahoo Finance historical data — adjusted for stock splits and reinvested dividends — the same convention used by major brokerages. A "year" scenario invests $1,000 at the prior December's month-end close and values it at the latest available month-end close. Non-USD amounts are converted at historical month-end exchange rates (Yahoo Finance): to USD on the buy date and back to your currency at the latest rate, so the return reflects the currency move as well as the asset.
Month-end resolution means intra-month extremes are not captured in tables; the calculator uses exact trading-day closes where daily data is available. Figures ignore taxes, fees, and the currency effects of non-USD listings. History is not a forecast. Wall Street Regrets is entertainment, not investment advice.
What if you'd held…
Data: adjusted close prices via Yahoo Finance. As of 2026-08. Not financial advice.