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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

The Warren Buffett investment philosophy calls for a long-term investment horizon, where a decade-long holding period, or even longer, would fit right into the strategy. How would such a strategy have worked out for an investment into Illumina Inc (NASD: ILMN)? Today, we examine the outcome of a decade-long investment into the stock back in 2012.

Start date: 09/12/2012


End date: 09/09/2022
Start price/share: $45.06
End price/share: $210.35
Starting shares: 221.93
Ending shares: 221.93
Dividends reinvested/share: $0.00
Total return: 366.82%
Average annual return: 16.66%
Starting investment: $10,000.00
Ending investment: $46,669.85

The above analysis shows the decade-long investment result worked out exceptionally well, with an annualized rate of return of 16.66%. This would have turned a $10K investment made 10 years ago into $46,669.85 today (as of 09/09/2022). On a total return basis, that’s a result of 366.82% (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.]

One more piece of investment wisdom to leave you with:
“It is remarkable how much long-term advantage people like us have gotten by trying to be consistently not stupid, instead of trying to be very intelligent.” — Charlie Munger