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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 investment philosophy practiced by Warren Buffett calls for investors to take a long-term horizon when making an investment, such as a ten year holding period (or even longer), and reconsider making the investment in the first place if unable to envision holding the stock for at least five years. Today, we look at how such a long-term strategy would have done for investors in Pentair PLC (NYSE: PNR) back in 2009, holding through to today.

Start date: 11/16/2009
$10,000

11/16/2009
$24,489

11/14/2019
End date: 11/14/2019
Start price/share: $21.51
End price/share: $43.09
Starting shares: 464.90
Ending shares: 568.55
Dividends reinvested/share: $7.25
Total return: 144.99%
Average annual return: 9.37%
Starting investment: $10,000.00
Ending investment: $24,489.62

As we can see, the ten year investment result worked out well, with an annualized rate of return of 9.37%. This would have turned a $10K investment made 10 years ago into $24,489.62 today (as of 11/14/2019). On a total return basis, that’s a result of 144.99% (something to think about: how might PNR 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 Pentair PLC, investors have received $7.25/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 .72/share, we calculate that PNR has a current yield of approximately 1.67%. Another interesting datapoint we can examine is ‘yield on cost’ — in other words, we can express the current annualized dividend of .72 against the original $21.51/share purchase price. This works out to a yield on cost of 7.76%.

Another great investment quote to think about:
“You can’t be a good value investor without being an independent thinker; you’re seeing valuations that the market is not appreciating. But it’s critical that you understand why the market isn’t seeing the value you do.” — Joel Greenblatt