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“I buy on the assumption that they could close the market the next day and not reopen it for five years.”

— 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 five year holding period possibly?

Suppose a “buy-and-hold” investor was considering an investment into American Tower Corp (NYSE: AMT) back in 2016: back then, such an investor may have been pondering this very same question. Had they answered “yes” to a full five year investment time horizon and then actually held for these past 5 years, here’s how that investment would have turned out.

Start date: 02/05/2016
$10,000

02/05/2016
$28,828

02/04/2021
End date: 02/04/2021
Start price/share: $88.84
End price/share: $232.20
Starting shares: 112.56
Ending shares: 124.14
Dividends reinvested/share: $16.25
Total return: 188.26%
Average annual return: 23.57%
Starting investment: $10,000.00
Ending investment: $28,828.17

The above analysis shows the five year investment result worked out exceptionally well, with an annualized rate of return of 23.57%. This would have turned a $10K investment made 5 years ago into $28,828.17 today (as of 02/04/2021). On a total return basis, that’s a result of 188.26% (something to think about: how might AMT shares perform over the next 5 years?). [These numbers were computed with the Dividend Channel DRIP Returns Calculator.]

Notice that American Tower Corp paid investors a total of $16.25/share in dividends over the 5 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 4.84/share, we calculate that AMT has a current yield of approximately 2.08%. Another interesting datapoint we can examine is ‘yield on cost’ — in other words, we can express the current annualized dividend of 4.84 against the original $88.84/share purchase price. This works out to a yield on cost of 2.34%.

Another great investment quote to think about:
“All intelligent investing is value investing: acquiring more that you are paying for. You must value the business in order to value the stock.” — Charlie Munger