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“I buy on the assumption that they could close the market the next day and not reopen it for five 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 five year holding period possibly?

Suppose a “buy-and-hold” investor was considering an investment into DTE Energy Co (NYSE: DTE) back in 2019: back then, such an investor may have been pondering this very same question. Had they answered “yes” to a full five year investment time horizon and then actually held for these past 5 years, here’s how that investment would have turned out.

Start date: 11/11/2019
$10,000

11/11/2019
  $13,576

11/08/2024
End date: 11/08/2024
Start price/share: $102.73
End price/share: $117.80
Starting shares: 97.34
Ending shares: 115.25
Dividends reinvested/share: $18.48
Total return: 35.77%
Average annual return: 6.31%
Starting investment: $10,000.00
Ending investment: $13,576.81

As shown above, the five year investment result worked out well, with an annualized rate of return of 6.31%. This would have turned a $10K investment made 5 years ago into $13,576.81 today (as of 11/08/2024). On a total return basis, that’s a result of 35.77% (something to think about: how might DTE shares perform over the next 5 years?). [These numbers were computed with the Dividend Channel DRIP Returns Calculator.]

Notice that DTE Energy Co paid investors a total of $18.48/share in dividends over the 5 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 4.08/share, we calculate that DTE has a current yield of approximately 3.46%. Another interesting datapoint we can examine is ‘yield on cost’ — in other words, we can express the current annualized dividend of 4.08 against the original $102.73/share purchase price. This works out to a yield on cost of 3.37%.

One more piece of investment wisdom to leave you with:
“The whole secret to winning big in the stock market is not to be right all the time, but to lose the least amount possible when you’re wrong.” — William O’Neil