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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 DTE Energy Co (NYSE: DTE)? Today, we examine the outcome of a decade-long investment into the stock back in 2014.

Start date: 07/22/2014
$10,000

07/22/2014
  $25,009

07/19/2024
End date: 07/19/2024
Start price/share: $64.76
End price/share: $116.09
Starting shares: 154.42
Ending shares: 215.53
Dividends reinvested/share: $31.98
Total return: 150.21%
Average annual return: 9.60%
Starting investment: $10,000.00
Ending investment: $25,009.53

The above analysis shows the decade-long investment result worked out well, with an annualized rate of return of 9.60%. This would have turned a $10K investment made 10 years ago into $25,009.53 today (as of 07/19/2024). On a total return basis, that’s a result of 150.21% (something to think about: how might DTE shares perform over the next 10 years?). [These numbers were computed with the Dividend Channel DRIP Returns Calculator.]

Notice that DTE Energy Co paid investors a total of $31.98/share in dividends over the 10 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 3.51%. 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 $64.76/share purchase price. This works out to a yield on cost of 5.42%.

Here’s one more great investment quote before you go:
“An investment in knowledge pays the best interest.” — Benjamin Franklin