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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 Illumina Inc (NASD: ILMN) back in 2012: 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: 01/31/2012
$10,000

01/31/2012
$64,012

01/28/2022
End date: 01/28/2022
Start price/share: $51.86
End price/share: $331.96
Starting shares: 192.83
Ending shares: 192.83
Dividends reinvested/share: $0.00
Total return: 540.11%
Average annual return: 20.40%
Starting investment: $10,000.00
Ending investment: $64,012.51

As shown above, the ten year investment result worked out exceptionally well, with an annualized rate of return of 20.40%. This would have turned a $10K investment made 10 years ago into $64,012.51 today (as of 01/28/2022). On a total return basis, that’s a result of 540.11% (something to think about: how might ILMN shares perform over the next 10 years?). [These numbers were computed with the Dividend Channel DRIP Returns Calculator.]

Here’s one more great investment quote before you go:
“One of the funny things about the stock market is that every time one person buys, another sells, and both think they are astute.” — William Feather