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“Only buy something that you’d be perfectly happy to hold if the market shut down for 10 years.”

— Warren Buffett

The Warren Buffett investment philosophy calls for a long-term investment horizon, where a ten year holding period, or even longer, would fit right into the strategy. How would such a strategy have worked out for an investment into Analog Devices Inc (NASD: ADI)? Today, we examine the outcome of a ten year investment into the stock back in 2009.

Start date: 11/09/2009
$10,000

11/09/2009
$53,729

11/07/2019
End date: 11/07/2019
Start price/share: $27.13
End price/share: $112.29
Starting shares: 368.60
Ending shares: 478.46
Dividends reinvested/share: $14.69
Total return: 437.26%
Average annual return: 18.31%
Starting investment: $10,000.00
Ending investment: $53,729.72

As we can see, the ten year investment result worked out exceptionally well, with an annualized rate of return of 18.31%. This would have turned a $10K investment made 10 years ago into $53,729.72 today (as of 11/07/2019). On a total return basis, that’s a result of 437.26% (something to think about: how might ADI shares perform over the next 10 years?). [These numbers were computed with the Dividend Channel DRIP Returns Calculator.]

Notice that Analog Devices Inc paid investors a total of $14.69/share in dividends over the 10 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 2.16/share, we calculate that ADI has a current yield of approximately 1.92%. Another interesting datapoint we can examine is ‘yield on cost’ — in other words, we can express the current annualized dividend of 2.16 against the original $27.13/share purchase price. This works out to a yield on cost of 7.08%.

One more piece of investment wisdom to leave you with:
“If you don’t study any companies, you have the same success buying stocks as you do in a poker game if you bet without looking at your cards.” — Peter Lynch