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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 Ameren Corp (NYSE: AEE) 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: 07/16/1999
$10,000

07/16/1999
$53,874

07/15/2019
End date: 07/15/2019
Start price/share: $38.88
End price/share: $76.29
Starting shares: 257.23
Ending shares: 705.84
Dividends reinvested/share: $41.52
Total return: 438.48%
Average annual return: 8.78%
Starting investment: $10,000.00
Ending investment: $53,874.30

As shown above, the two-decade investment result worked out well, with an annualized rate of return of 8.78%. This would have turned a $10K investment made 20 years ago into $53,874.30 today (as of 07/15/2019). On a total return basis, that’s a result of 438.48% (something to think about: how might AEE shares perform over the next 20 years?). [These numbers were computed with the Dividend Channel DRIP Returns Calculator.]

Notice that Ameren Corp paid investors a total of $41.52/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 1.9/share, we calculate that AEE has a current yield of approximately 2.49%. Another interesting datapoint we can examine is ‘yield on cost’ — in other words, we can express the current annualized dividend of 1.9 against the original $38.88/share purchase price. This works out to a yield on cost of 6.40%.

One more piece of investment wisdom to leave you with:
“Most investors want to do today what they should have done yesterday.” — Larry Summers