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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 Hologic Inc (NASD: HOLX) 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: 05/21/1999
$10,000

05/21/1999
$234,641

05/20/2019
End date: 05/20/2019
Start price/share: $1.91
End price/share: $44.80
Starting shares: 5,235.60
Ending shares: 5,235.60
Dividends reinvested/share: $0.00
Total return: 2,245.55%
Average annual return: 17.08%
Starting investment: $10,000.00
Ending investment: $234,641.47

As we can see, the two-decade investment result worked out exceptionally well, with an annualized rate of return of 17.08%. This would have turned a $10K investment made 20 years ago into $234,641.47 today (as of 05/20/2019). On a total return basis, that’s a result of 2,245.55% (something to think about: how might HOLX shares perform over the next 20 years?). [These numbers were computed with the Dividend Channel DRIP Returns Calculator.]

Another great investment quote to think about:
“Searching for companies is like looking for grubs under rocks: if you turn over 10 rocks you’ll likely find one grub; if you turn over 20 rocks you’ll find two.” — Peter Lynch