It's a good theory, it makes intellectual sense, but it's not foolproof. First, some explanation. Therefore, buy the worst 10 Dow stocks each year. This takes a bit of explaining. The dividend yield is the past 12 months' dividend payout, divided by a stock's current price.
Dividends tend to remain stable throughout the year.
So the higher the dividend yield, the doggier the Dow stock. This is actually quite an elegant way to buy good-quality stocks at low prices. Several brokerage houses have rolled out unit investment trusts based on the Dogs of the Dow, which I presume are what you now own. So it may make some sense to pick your dogs a bit more carefully. For example, the biggest Dog is Philip Morris, a great food company with all kinds of potential problems from its big, nasty tobacco division.