Lynch said you must always look out for these regional-to-national stories, because they can be "10-baggers" -- meaning they can go up and up and up until they expand all over the country. Well, one thing is for certain: I love my Dunkin Donuts and I can't wait to see the gals behind the counter at my fabulous Dunkin Donuts in Summit, N.J., tomorrow morning. How can you not like that piping-hot extra large with a little bit of skim that comes in for under 3 smackers? Yet when the company came public, I was shocked to learn that there are very few Dunkin Donuts west of the Mississippi and none in California -- areas that represent one-fifth of this whole country. That means the company could have growth as far as the eye could see, perhaps a 10-bagger, given how well it is executing and how much cash it is throwing off. There are very few high-quality chains that aren't already nationwide, and when you find them -- as we have with winners like Dollar General ( DG) and Ross Stores ( ROST) -- you have to hold on to them until they fill out the map.
Once that happens, by the way, the growth of the company slows dramatically, and so does the stock. We know this from many of the big department stores and discounters that are already everywhere, like Sears ( SHLD) and yes, ugh, J.C. Penney ( JCP). They don't need any more Sears or Penneys. If anything, they need fewer of them. Of course, store growth doesn't always have to come in a regional-to-national capsule. Whole Foods ( WFM) still has plenty of runway to fill in stores, as does Bed Bath & Beyond ( BBBY). Both are winners. But the regional-to-national story is the better bet, especially when the largest state in the union isn't covered. So now you know what I mean. Now you can look at the annual report, as Peter Lynch told you to do, and check out the locations. Or you can go on the Web, as every chain has a store map. Then you can make up your own mind. Chances are, if you like the product, and the chain's just spreading its wings, you've got a winner.