Despite stronger than expected economic data, mortgage-backed securities were little changed Tuesday in another day of volatile trading. This morning, the April S&P/Case-Shiller 20-city home price index rose a record 2.5% from March. It was 12% higher than one year ago, which was the largest annual increase since 2006. Durable Goods Orders rose 3.6%, beating expectations. Consumer Confidence jumped to 81.4, far above forecast, to the highest reading since January 2008. New Home Sales increased to 476,000 annual units, a bit higher than expected. No other key data will be released today.