After moving upward for two straight months, existing-home sales retreated in April on both a monthly and annualized basis, according to the National Association of Realtors. All four major regions saw no gain in sales activity last month.

Total existing-home sales which are completed transactions that include single-family homes, townhomes, condominiums and co-ops, decreased 2.5 percent to a seasonally adjusted annual rate of 5.46 million in April from 5.60 million in March. With last month's decline, sales are now 1.4 percent below a year ago and have fallen year-over-year for two straight months.