Mortgage rates improved slightly this morning as concerns about Greece hurt stocks and boosted mortgage-backed securities. European Union officials have agreed to make preparations in case Greece decides to exit from the EU. In economic news, New Home Sales rose by 3.3% last month to 343,000 annual units, beating forecast. The Mortgage Bankers Association weekly purchase activity index fell 3.0%, while the refinancing activity index increase 5.6%. Average reported 30-year fixed rates declined to 3.93%, not including fees. Results from today’s 5-year Treasury auction will be released at 1:00 PM.