Depomed (DEPO) may be setting up in a base, giving investors a chance to buy. But there are some caveats. One is that the base might be a late-stage pattern, since the stock has already made a big move. The base is in its eighth week, and it has corrected 25%, well within the proportions of a normal base. The base, however, is somewhat loose, with weekly spreads wider than you would see in a textbook base.