The residential shadow inventory has remained steady at 1.6 million units in January, CoreLogic said in a new report with numbers through January 2012. The firm notes that the flow of distressed sales out of the shadow inventory has been relatively even with the flow of new seriously delinquent loans into the inventory. The 1.6 million units are equal to a six-month supply, which is a year-over-year improvement from January 2011, when the 1.8 million units represented an eight-month supply. Of the units currently in shadow inventory, 800,000 are seriously delinquent, 410,000 are already in the foreclosure...