Pending sales of already existing homes in the world's largest economy dropped more than initially expected in February, indicating a pause in momentum for an industry, which usually provides a big boost the economy. According to the National Association of Realtors, an index of pending home sales tumbled 0.4% to 104.8 after a revised 3.8% increase recorded a month ago. Existing-home sales make up 93% of the housing market and are considered a leading indicator, therefore, a contraction is adding to concerns that the property market is not on the path of stable recovery.