Macquarie Bank's Macquarie Cash Management Trust (CMT) has passed a milestone of 400,000 accounts.
Funds under management by CMT rose by 22 per cent since March, reaching more than $18 billion.
Macquarie Adviser Services head Neil Roderick said growth in CMT was matched by Macquarie Wrap, which had over $7 billion of fund inflows for the year ending June.