Dow 10,000 has finally arrived. Enjoy it while you can

Here's a headline for you: Dow Jones Industrial Average ($INDU) crosses five-digit even number, closes with ugly decimal points tacked onto the end.

Don't get us wrong: Dow 10,000 has arrived, so pop out the champagne. But please indulge in just the slightest of sips. Breaking the key psychological level of Dow 10,000 is one thing. Holding onto those gains is quite another.

Joe Clark, managing partner of Financial Enhancement Group, is chewing his fingernails with the Dow above that long-lost level. "Just hope that it holds," he says. "I don't buy that the economics match the market results all."