Mortgage rates were little changed Wednesday as mortgage-backed securities gave back Tuesday’s gains. In economic news, New Home Sales fell by 8.4% in June to 350,000 annual units. An increase to 375,000 had been expected. The Mortgage Bankers Association weekly purchase activity index decreased 2.8%, while the refinancing activity index rose 1.8%. Average reported 30-year fixed rates remained unchanged at 3.75%, not including fees. No other key data will be released today.