The private mortgage insurance industry, driven toward irrelevance during the first two years of the housing market collapse, is staging a quiet comeback in 2011. A new Inside Mortgage Finance ranking and analysis reveals that private MI activity in the third quarter rebounded to its strongest market share in three years, and accounted for 24.2 percent of new primary mortgage insurance written. While FHA volume dropped 6.2 percent from the second quarter, private MIs provided coverage for $22.01 billion in new mortgages, a gain of 38.6 percent. The increase in private MI activity outstripped...(Includes three data charts)