Simon Property Group (NYSE: SPG) is the largest real estate company in the world. You know those shopping malls where your teenage kids hang out and where your wife spends all of your money? Chances are, SPG owns it. They own or have interest in 337 retail real estate properties in North America and Asia. They also have a 29% stake in 270 shopping centers across Europe through publicly traded French REIT Klepierre. Klepierre recently posted a 3.1% rise in rental income for Q1 2012. Their shopping centers in Northern Europe offset the 4.4% rental income loss in Spain.