If there was any question about what was driving the housing market in 2011, some year-end housing numbers have provided two clear answers: investors and distressed properties. The combination of investors buying up large amounts of distressed properties not only put downward pressure on home prices, but also cut into the home-purchase mortgage business by generating a significant number of cash sales. These are some of the major conclusions that can be drawn from a look at 2011 results from the Campbell/Inside Mortgage Finance HousingPulse Tracking Survey. Last year’s housing...(Includes one data chart)