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“When we own portions of outstanding businesses with outstanding managements, our favorite holding period is forever.”

— Warren Buffett

The above quote from Warren Buffett is timeless, and brings into focus the choice about time horizon that any investor should think about before buying a stock they are considering. Behind every stock is an actual business; what will that business look like over a twenty year period?

Today, let’s look backwards in time to 1999, and take a look at what happened to investors who asked that very question about ABIOMED, Inc. (NASD: ABMD), by taking a look at the investment outcome over a twenty year holding period.

Start date: 03/29/1999
$10,000

03/29/1999
$458,578

03/28/2019
End date: 03/28/2019
Start price/share: $6.19
End price/share: $283.90
Starting shares: 1,615.51
Ending shares: 1,615.51
Dividends reinvested/share: $0.00
Total return: 4,486.43%
Average annual return: 21.07%
Starting investment: $10,000.00
Ending investment: $458,578.13

As we can see, the twenty year investment result worked out exceptionally well, with an annualized rate of return of 21.07%. This would have turned a $10K investment made 20 years ago into $458,578.13 today (as of 03/28/2019). On a total return basis, that’s a result of 4,486.43% (something to think about: how might ABMD shares perform over the next 20 years?). [These numbers were computed with the Dividend Channel DRIP Returns Calculator.]

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