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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

This inspiring quote from Warren Buffett teaches us the importance of considering our investment time horizon when approaching any given investment: Could we envision ourselves holding the stock we are considering for many years? Even a five year holding period potentially?

For “buy-and-hold” investors taking a long-term view, what’s important isn’t the short-term stock market fluctuations that will inevitably occur, but what happens over the long haul. Looking back 5 years to 2015, investors considering an investment into shares of Costco Wholesale Corp (NASD: COST) may have been pondering this very question and thinking about their potential investment result over a full five year time horizon. Here’s how that would have worked out.

Start date: 02/24/2015
$10,000

02/24/2015
$23,840

02/21/2020
End date: 02/21/2020
Start price/share: $148.21
End price/share: $321.95
Starting shares: 67.47
Ending shares: 74.05
Dividends reinvested/share: $17.28
Total return: 138.41%
Average annual return: 19.00%
Starting investment: $10,000.00
Ending investment: $23,840.80

As shown above, the five year investment result worked out exceptionally well, with an annualized rate of return of 19.00%. This would have turned a $10K investment made 5 years ago into $23,840.80 today (as of 02/21/2020). On a total return basis, that’s a result of 138.41% (something to think about: how might COST shares perform over the next 5 years?). [These numbers were computed with the Dividend Channel DRIP Returns Calculator.]

Notice that Costco Wholesale Corp paid investors a total of $17.28/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 2.6/share, we calculate that COST has a current yield of approximately 0.81%. Another interesting datapoint we can examine is ‘yield on cost’ — in other words, we can express the current annualized dividend of 2.6 against the original $148.21/share purchase price. This works out to a yield on cost of 0.55%.

More investment wisdom to ponder:
“I make no attempt to forecast the market; my efforts are devoted to finding undervalued securities.” — Warren Buffett