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“Someone’s sitting in the shade today because someone planted a tree a long time ago.”

— Warren Buffett

Investors can learn a lot from Warren Buffett, whose above quote teaches the importance of thinking about investment time horizon, and asking ourselves before buying any given stock: can we envision holding onto it for years — even a twenty year holding period possibly?

Suppose a “buy-and-hold” investor was considering an investment into Iron Mountain Inc (NYSE: IRM) back in 2002: back then, such an investor may have been pondering this very same question. Had they answered “yes” to a full twenty year investment time horizon and then actually held for these past 20 years, here’s how that investment would have turned out.

Start date: 06/10/2002
$10,000

06/10/2002
$91,208

06/09/2022
End date: 06/09/2022
Start price/share: $12.48
End price/share: $52.29
Starting shares: 801.28
Ending shares: 1,744.81
Dividends reinvested/share: $25.84
Total return: 812.36%
Average annual return: 11.68%
Starting investment: $10,000.00
Ending investment: $91,208.20

As shown above, the twenty year investment result worked out quite well, with an annualized rate of return of 11.68%. This would have turned a $10K investment made 20 years ago into $91,208.20 today (as of 06/09/2022). On a total return basis, that’s a result of 812.36% (something to think about: how might IRM shares perform over the next 20 years?). [These numbers were computed with the Dividend Channel DRIP Returns Calculator.]

Notice that Iron Mountain Inc paid investors a total of $25.84/share in dividends over the 20 holding period, marking a second component of the total return beyond share price change alone. Much like watering a tree, reinvesting dividends can help an investment to grow over time — for the above calculations we assume dividend reinvestment (and for this exercise the closing price on ex-date is used for the reinvestment of a given dividend).

Based upon the most recent annualized dividend rate of 2.474/share, we calculate that IRM has a current yield of approximately 4.73%. Another interesting datapoint we can examine is ‘yield on cost’ — in other words, we can express the current annualized dividend of 2.474 against the original $12.48/share purchase price. This works out to a yield on cost of 37.90%.

Another great investment quote to think about:
“When everyone is going right, look left.” — Sam Zell