Dollar Cost Averaging vs Simple Averaging

There is a difference between simple averaging and dollar cost averaging.

Tan Teng Boo averaged down on a stock and profited. Let us look at what he did.

This was taken from this week's icap newsletter:
"A stock that the i Capital Global Fund invested in plunged around 85% during the 2007-2009 bear market. However, instead of selling as it dropped, we bought so much more of this stock that the cost price plunged around 80% too. By now, the i Capital Global Fund is sitting on a gain of 175% on this particular stock. The reason why ICGF bought so much more was because if it was attractive at higher prices, it is even more attractive at depressed prices since the business fundamentals of the company have not changed. "

What ICGF did. http://spreadsheets.google.com/pub?key=r_MxUHLmwJhsKRpR7JklS1Q&output=html

Simple Averaging

The first point to clear up is actually the difference between dollar cost averaging and simple averaging. What Teng Boo did above was not DCA but simple averaging.

Buffett does not believe in DCA. "It does not make sense investing in stocks when the prices are high." However, Buffett will employ simple averaging, often buying a good stock he likes in large amount when its price is down for no good reasons.

DCA

Those employing DCA should learn its limitations too. It is a way to diversify risk, and is definitely not a strategy to optimise your returns. Various studies quoted that returns from lump sum investing beats those from DCA, 60% of the time.

There are risks too from DCA. If the stock price tanked due to deterioration in its fundamentals, using DCA equates to throwing good money after a lousy company and should not be employed. Also, remember that the same amount used for DCA into a stock is an opportunity cost, to investing in another stock.


The Only Reason to Simple Average or Dollar Cost Average

I did pick up a very important point. It was good to see this advice in print. For those who are investing in good high quality stocks, averaging down can be employed in ONE particular situation, when its price tanked for no good reasons. However, there is still the need to ensure that your good high quality stock's fundamentals have not deteriorated.



To summarise:

There is only one reason that justifies simple averaging or dollar cost averaging - when its price tanked for no good reasons. However, there is still the need to ensure that your good high quality stock's fundamentals have not deteriorated.

If you thought that a stock was undervalued at $34 and without the fundamentals of the company changing, the stock got unfairly beaten down.

An investor put it: "The company and its business have not changed. The only change is its share price got beaten down."