High-quality endorsements and lower-than-expected prepayment speeds have given a slight boost to the FHA Mutual Mortgage Insurance Fund in the second quarter of 2011 even as agency officials remained cautiously optimistic about the recent book of business. In its quarterly report, the Department of Housing and Urban Development said that the MMI fund’s total capital improved by $100 million to $31.7 billion from the previous quarter as revenues from premiums and property sales exceeded higher claims payments. Endorsements in the second quarter alone added $1.7 billion to the capital reserve account, which stood at $2.8 billion at the end of June, the report noted. The FHA capital reserve account, which absorbs ...