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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 Automatic Data Processing Inc. (NASD: ADP)? Today, we examine the outcome of a ten year investment into the stock back in 2015.

Start date: 03/16/2015
$10,000

03/16/2015
  $41,128

03/13/2025
End date: 03/13/2025
Start price/share: $87.35
End price/share: $290.55
Starting shares: 114.48
Ending shares: 141.61
Dividends reinvested/share: $34.84
Total return: 311.45%
Average annual return: 15.19%
Starting investment: $10,000.00
Ending investment: $41,128.97

As shown above, the ten year investment result worked out exceptionally well, with an annualized rate of return of 15.19%. This would have turned a $10K investment made 10 years ago into $41,128.97 today (as of 03/13/2025). On a total return basis, that’s a result of 311.45% (something to think about: how might ADP shares perform over the next 10 years?). [These numbers were computed with the Dividend Channel DRIP Returns Calculator.]

Notice that Automatic Data Processing Inc. paid investors a total of $34.84/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 6.16/share, we calculate that ADP has a current yield of approximately 2.12%. Another interesting datapoint we can examine is ‘yield on cost’ — in other words, we can express the current annualized dividend of 6.16 against the original $87.35/share purchase price. This works out to a yield on cost of 2.43%.

More investment wisdom to ponder:
“Cash combined with courage in a time of crisis is priceless.” — Warren Buffett