UBank's housing loan book makes big gains 08 May 2015 4:06PM Ian Rogers and Shereel Patel The positioning of UBank is shifting, with NAB allowing the deposit book for its digital brand to taper off.Deposits for UBank at the end of the first quarter of 2015 were A$16.8 billion, a decrease of four per cent over six months. A year ago UBank's deposit stood at $17.6 billion.On the other hand, UBank continued to grow housing loans, although the rate of growth slowed recently. At the end of March, UBank's housing loan book was $3.4 billion, up $200 million over six months and up $1.7 million over 12 months.After five years in operation, UBank is no longer an investment priority for NAB, with the end of work on renovation of the UBank servicing platform.