Even though United Parcel Service ( UPS) has had a slumping share price in 2011, investors shouldn't discount this stock just yet. In many ways, a bet on UPS is a bet on the broader global economy; as the economy grows, so too does the volume of shipments that this delivery company handles. So it should come as no surprise that investors aren't piling into UPS right now. That said, selling is overblown in this stock; with analyst sentiment on the upswing this week, now's a good chance to get into shares. UPS boasts the largest shipping network in the world, delivering more than 15 million packages each day. Network means everything in the shipping business, and competitors need to be able to ship to a large set of locations and at an incredibly low cost. Essentially, that makes UPS' current operations incredibly difficult to replicate, both logistically and from a capital perspective -- running a worldwide delivery network isn't cheap. But this stock is. A forward P/E of 13 and dividend yield of 3.19% are evidence of that. UPS is one of TheStreet Ratings' top-rated freight services and logistics stocks.