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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 ten year holding period possibly?

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

Start date: 05/11/2009


End date: 05/09/2019
Start price/share: $9.50
End price/share: $26.94
Starting shares: 1,052.63
Ending shares: 1,052.63
Dividends reinvested/share: $0.00
Total return: 183.58%
Average annual return: 10.99%
Starting investment: $10,000.00
Ending investment: $28,368.64

As shown above, the ten year investment result worked out quite well, with an annualized rate of return of 10.99%. This would have turned a $10K investment made 10 years ago into $28,368.64 today (as of 05/09/2019). On a total return basis, that’s a result of 183.58% (something to think about: how might DISCK shares perform over the next 10 years?). [These numbers were computed with the Dividend Channel DRIP Returns Calculator.]

One more investment quote to leave you with:
“As time goes on, I get more and more convinced that the right method of investment is to put fairly large sums into enterprises which one thinks one knows something about and in the management of which one thoroughly believes.” — John Maynard Keynes