Macquarie Group has completed its second issue of residential mortgage-backed securities for the year, shaving 11 basis points off its funding costs since February.Macquarie raised A$1 billion through the issue of Puma Series 2014-2 Trust, to add to the $1.4 billion it raised in February.The $920 million A tranche of the latest deal, which has a weighted average life of 2.7 years, was priced at 79 bps over the bank bill swap rate.Pricing on the B1 and B2 notes, worth a total of $80 million, was not disclosed. Back in February, Macquarie paid 90 bps over swap on the $1.3 billion A tranche of Puma Series 2014-1 Trust.And in September last year Macquarie paid 100 bps over swap on the top tranche of a $1.2 billion RMBS issue.Macquarie said in a statement that 16 investors participated in the transaction and 33 per cent of the A notes were placed offshore.