The Housing Market Index (HMI) release today by the National Association of Home Builders (NAHB)/Wells Fargo remained virtually unchanged for the sixth month in a row. The index which measures home builders' confidence in the market for newly built, single-family houses, slid by a single point in September to 14. It has moved within the 13 to 16 point range since mid-winter. The HMI is derived from a monthly survey of new home builders which asks them to assess both current new home sales and their...