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“When we own portions of outstanding businesses with outstanding managements, our favorite holding period is forever.”

— Warren Buffett

The wisdom of Warren Buffett reflects a value-based philosophy about investing that says investors are buying shares in a business, and encourages strategic thinking about investment time horizon. Before placing a buy order for a stock, a great question we can ask is whether we would still be comfortable making the investment if we couldn’t sell it for many years?

A “buy-and-hold” approach may call for a time horizon that spans a long period of time — maybe even lasting for a twenty year holding period. Suppose such a “buy-and-hold” investor had looked into buying shares of Idexx Laboratories, Inc. (NASD: IDXX) back in 1999. Let’s take a look at how such an investment would have worked out for that buy-and-hold investor:

Start date: 10/18/1999
$10,000

10/18/1999
$758,514

10/17/2019
End date: 10/17/2019
Start price/share: $3.72
End price/share: $282.13
Starting shares: 2,688.17
Ending shares: 2,688.17
Dividends reinvested/share: $0.00
Total return: 7,484.14%
Average annual return: 24.15%
Starting investment: $10,000.00
Ending investment: $758,514.75

The above analysis shows the twenty year investment result worked out exceptionally well, with an annualized rate of return of 24.15%. This would have turned a $10K investment made 20 years ago into $758,514.75 today (as of 10/17/2019). On a total return basis, that’s a result of 7,484.14% (something to think about: how might IDXX shares perform over the next 20 years?). [These numbers were computed with the Dividend Channel DRIP Returns Calculator.]

One more investment quote to leave you with:
“The four most dangerous words in investing are: ‘this time it’s different.'” — Sir John Templeton