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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

Investors can learn a lot from Warren Buffett, whose above quote teaches the importance of thinking about investment time horizon, and asking ourselves before buying any given stock: can we envision holding onto it for years — even a decade-long holding period possibly?

Suppose a “buy-and-hold” investor was considering an investment into Idexx Laboratories, Inc. (NASD: IDXX) back in 2009: back then, such an investor may have been pondering this very same question. Had they answered “yes” to a full decade-long investment time horizon and then actually held for these past 10 years, here’s how that investment would have turned out.

Start date: 09/04/2009
$10,000

09/04/2009
$114,228

09/03/2019
End date: 09/03/2019
Start price/share: $25.05
End price/share: $286.08
Starting shares: 399.20
Ending shares: 399.20
Dividends reinvested/share: $0.00
Total return: 1,042.04%
Average annual return: 27.57%
Starting investment: $10,000.00
Ending investment: $114,228.71

As shown above, the decade-long investment result worked out exceptionally well, with an annualized rate of return of 27.57%. This would have turned a $10K investment made 10 years ago into $114,228.71 today (as of 09/03/2019). On a total return basis, that’s a result of 1,042.04% (something to think about: how might IDXX shares perform over the next 10 years?). [These numbers were computed with the Dividend Channel DRIP Returns Calculator.]

One more piece of investment wisdom to leave you with:
“The best way to measure your investing success is not by whether you’re beating the market but by whether you’ve put in place a financial plan and a behavioral discipline that are likely to get you where you want to go.” — Benjamin Graham