The outstanding value of Australian securitised assets fell 5.7 per cent in the June quarter to $239 billion, the fourth quarterly fall in a row, showing that new issuance is slight and investor demand selective.Residential mortgages account for 72 per cent of the outstanding value at $171 billion, a 5.4 per cent fall over the March quarter. At the end of June 2007, outstanding mortgage-backed securities peaked at $204 billion, the Australian Bureau of Statistics said.Shorter dated lending in the non-residential securitisation segment fell 19 per cent to $8.2 billion at June 2008. This segment also peaked in June 2007 at $11.2 billion.Securitisation comprising 'Other' loans bucked the trend, rising seven per cent in the June quarter to $19.6 billion, a new high.