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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: 11/20/2015
$10,000

11/20/2015
  $35,596

11/19/2025
End date: 11/19/2025
Start price/share: $87.29
End price/share: $250.41
Starting shares: 114.56
Ending shares: 142.19
Dividends reinvested/share: $38.48
Total return: 256.06%
Average annual return: 13.53%
Starting investment: $10,000.00
Ending investment: $35,596.59

As we can see, the ten year investment result worked out quite well, with an annualized rate of return of 13.53%. This would have turned a $10K investment made 10 years ago into $35,596.59 today (as of 11/19/2025). On a total return basis, that’s a result of 256.06% (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.]

Many investors out there refuse to own any stock that lacks a dividend; in the case of Automatic Data Processing Inc., investors have received $38.48/share in dividends these past 10 years examined in the exercise above. This means total return was driven not just by share price, but also by the dividends received (and what the investor did with those dividends). For this exercise, what we’ve done with the dividends is to assume they are reinvestted — i.e. used to purchase additional shares (the calculations use closing price on ex-date).

Based upon the most recent annualized dividend rate of 6.8/share, we calculate that ADP has a current yield of approximately 2.72%. Another interesting datapoint we can examine is ‘yield on cost’ — in other words, we can express the current annualized dividend of 6.8 against the original $87.29/share purchase price. This works out to a yield on cost of 3.12%.

One more piece of investment wisdom to leave you with:
“If you have more than 120 or 130 I.Q. points, you can afford to give the rest away. You don’t need extraordinary intelligence to succeed as an investor.” — Warren Buffett