Mortgage rates were little changed Wednesday in quiet trading. The Mortgage Bankers Association weekly purchase activity index rose by 8.1% while the refinancing activity index increased by 3.3%. Average reported 30-year fixed rates rose to 4.11% last week, not including fees. Results from today’s 10-year Treasury auction will be released at 1:00 PM. The Beige Book, a survey of economic activity by the Fed’s 12 regional banks, will be released at 2:00 PM.