Iron Mountain (IRM) Total Return Calculator
$10,000 since Dec 2007, with and without reinvesting · data through Oct 2026
$10,000 invested in Iron Mountain (IRM) ten years ago, at the end of Oct 2016, was worth $59,373 at the end of Oct 2026 with every dividend reinvested: 19.5% a year, against $41,633 in the S&P 500. Since Dec 2007, $10,000 became $77,804 reinvested (11.5% a year), or $41,891 taking the dividends as cash, $10,408 of it paid out along the way.
IRM became
$77,804
S&P 500: $72,756
Return a year
11.5%
S&P 500: 11.1%
Payouts reinvested
$18,185
bought more shares
Worst drop
-49.8%
S&P 500: -48.2%
$10,000, Dec 2007 to Oct 2026
Payouts reinvested · S&P 500 reinvested
| Year | IRM total return | Paid out | S&P 500 |
|---|---|---|---|
| 2026 (part) | +43.7% | $1,685 | +11.7% |
| 2025 | −18.2% | $2,097 | +17.7% |
| 2024 | +54.5% | $1,701 | +24.9% |
| 2023 | +46.5% | $1,527 | +26.2% |
| 2022 | −0.1% | $1,366 | −18.2% |
| 2021 | +87.8% | $1,334 | +28.7% |
| 2020 | +1.0% | $1,186 | +18.3% |
| 2019 | +5.9% | $1,130 | +31.2% |
| 2018 | −8.0% | $1,022 | −4.6% |
| 2017 | +23.6% | $935 | +21.7% |
| 2016 | +27.4% | $799 | +12.0% |
| 2015 | −25.7% | $700 | +1.2% |
| 2014 | +33.9% | $596 | +13.5% |
| 2013 | +1.1% | $331 | +32.3% |
| 2012 | +15.6% | $1,401 | +16.0% |
| 2011 | +26.5% | $244 | +1.9% |
| 2010 | +11.4% | $103 | +15.1% |
| 2009 | −8.0% | $12 | +26.4% |
| 2008 | −33.2% | $17 | −36.8% |
"Paid out" is what your holding received that year. Month-end prices; no costs or taxes.
Key facts: IRM total return
Data as of · Source: SmarterDividends data
- $10,000 invested in Iron Mountain (IRM) at the end of Dec 2007, with dividends reinvested, was worth $77,804 at the end of Oct 2026: 11.5% a year, against $72,756 (11.1% a year) in the S&P 500.
- Over the 10 years to Oct 2026, IRM turned $10,000 into $59,373 with dividends reinvested, 19.5% a year.
- Over the 5 years to Oct 2026, IRM returned 25.3% a year with dividends reinvested (S&P 500: 12.0%).
- Taking IRM's dividends as cash instead of reinvesting them, the same $10,000 ended at $41,891, including $10,408 of cash received; reinvesting added $35,912.
- IRM's best calendar year in that time was 2021 (87.8%) and its worst 2008 (-33.2%), with dividends reinvested.
Cite this page
SmarterDividends, "Iron Mountain (IRM) Total Return Calculator," updated Nov 5, 2026, https://smarterdividends.com/stocks/IRM/total-return
IRM total return questions
If I invested $10,000 in IRM 10 years ago, how much would I have?
About $59,373 at the end of Oct 2026, with every dividend reinvested: 19.5% a year. Taking them as cash, you'd have shares worth $34,554 or so plus the cash you received. The same $10,000 in the S&P 500 became $41,633.
What is IRM's total return since Dec 2007?
678% in total, or 11.5% a year, through Oct 2026 with dividends reinvested. The share price alone rose 215%.
How much of IRM's return came from dividends?
About 45% of its yearly return since Dec 2007. Reinvesting them, rather than taking cash, left you $35,912 better off on a $10,000 start.
What was IRM's worst year?
2008, at -33.2% with dividends reinvested (S&P 500: -36.8%). Its deepest fall from a peak, on month-end values, was -49.8%.
How is total return calculated here?
From month-end prices: the adjusted price counts every dividend reinvested in the month it was paid; the plain price doesn't. The S&P 500 is SPY with its dividends reinvested. No trading costs or taxes.