It was just last summer that the Dow Jones industrial average shed 2,000 points in three terrifying weeks. Investors had a host of things to worry about, including the possibility of another recession. Now the Dow is within reach of the rarefied 13,000 mark — a level it hasn’t seen since May 2008, four months before the financial system almost came apart. A strong one-day rally caused by a deal on bailout money for Greece, perhaps, or an unexpectedly positive economic report could put it over the top. What’s more, the average is just a 10 percent rally from an all-time high. And 10 percent rallies can happen fast ... (full story)