Mortgage rates were little changed Tuesday following slight improvement late Monday. The National Association of Realtors (NAR) reported a 7.7% decline in January’s Pending Home Sales, more than double forecast. On a more positive note, the NAR’s Affordability Index rose to 166.8 in January, the highest mark since tracking began in 1970. The combination of lower home prices and historically low interest rates has improved home affordability dramatically over the past year. Stocks moved generally higher. No other economic data will be released today.