Dollar Cost Averaging for better or for worse

Dollar Cost Averaging and Market trend

Here’s the question: is this a good thing? Lots of financial advisors think that dollar cost averaging is the cat’s banana, but I’m not entirely convinced.

Uptrending market: Let’s look at a year in which the value of a stock starts at 100, goes up 10 a month until June (the peak), then stays steady for the rest of the year. You paid $134.94 per share with dollar cost averaging. If you instead bought in at the start of the year with your complete investment, then you paid only $100 per share.

Downtrending market: On the other hand, let’s look at the reverse market: the stock starts at 100, goes down 10 a month until June, then stays steady the rest of the year. If you invested it all right off the bat, you spent $100 a share for stocks now worth $50, but if you used dollar cost averaging on a monthly basis, you only paid an average of $58.66 per share.

Dollar cost averaging is good if you think there’s a good chance that the market will see turbulence or go down. It will reduce the impact of the collapse on your investing. On the other hand, dollar cost averaging doesn’t do so well if the market is going crazy.

Here is how one investor views dollar cost averaging: "Since I think the market is going to be turbulent, but not go up or down a whole lot overall in the year 20xx, I think that dollar cost averaging is fine for me in the short term."

http://www.thesimpledollar.com/2006/12/30/how-im-using-dollar-cost-averaging-for-better-or-for-worse/