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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 Micron Technology Inc. (NASD: MU) back in 2003: 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: 08/21/2003


End date: 08/18/2023
Start price/share: $13.76
End price/share: $63.59
Starting shares: 726.74
Ending shares: 737.09
Dividends reinvested/share: $0.88
Total return: 368.71%
Average annual return: 8.03%
Starting investment: $10,000.00
Ending investment: $46,889.04

As shown above, the two-decade investment result worked out well, with an annualized rate of return of 8.03%. This would have turned a $10K investment made 20 years ago into $46,889.04 today (as of 08/18/2023). On a total return basis, that’s a result of 368.71% (something to think about: how might MU shares perform over the next 20 years?). [These numbers were computed with the Dividend Channel DRIP Returns Calculator.]

Notice that Micron Technology Inc. paid investors a total of $0.88/share in dividends over the 20 holding period, marking a second component of the total return beyond share price change alone. Much like watering a tree, reinvesting dividends can help an investment to grow over time — for the above calculations we assume dividend reinvestment (and for this exercise the closing price on ex-date is used for the reinvestment of a given dividend).

Based upon the most recent annualized dividend rate of .46/share, we calculate that MU has a current yield of approximately 0.72%. Another interesting datapoint we can examine is ‘yield on cost’ — in other words, we can express the current annualized dividend of .46 against the original $13.76/share purchase price. This works out to a yield on cost of 5.23%.

Here’s one more great investment quote before you go:
“Thousands of experts study overbought indicators, head-and-shoulder patterns, put-call ratios, the Fed’s policy on money supply…and they can’t predict markets with any useful consistency, any more than the gizzard squeezers could tell the Roman emperors when the Huns would attack.” — Peter Lynch