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

— 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 two-decade holding period possibly?

Suppose a “buy-and-hold” investor was considering an investment into AutoZone, Inc. (NYSE: AZO) back in 1999: back then, such an investor may have been pondering this very same question. Had they answered “yes” to a full two-decade investment time horizon and then actually held for these past 20 years, here’s how that investment would have turned out.

Start date: 06/01/1999
$10,000

06/01/1999
$350,062

05/29/2019
End date: 05/29/2019
Start price/share: $29.38
End price/share: $1,027.54
Starting shares: 340.43
Ending shares: 340.43
Dividends reinvested/share: $0.00
Total return: 3,398.01%
Average annual return: 19.45%
Starting investment: $10,000.00
Ending investment: $350,062.85

The above analysis shows the two-decade investment result worked out exceptionally well, with an annualized rate of return of 19.45%. This would have turned a $10K investment made 20 years ago into $350,062.85 today (as of 05/29/2019). On a total return basis, that’s a result of 3,398.01% (something to think about: how might AZO shares perform over the next 20 years?). [These numbers were computed with the Dividend Channel DRIP Returns Calculator.]

One more piece of investment wisdom to leave you with:
“Smart investing doesn’t consist of buying good assets but of buying assets well. This is a very, very important distinction that very, very few people understand.” — Howard Marks