Low interest rates are helping fuel a boom in shares, despite a patchy economy.
The sharemarket has grown by 25% in the past year, while the economy has expanded at a modest annual rate of 2.5%.
Analysts say record low interest rates have prompted people to invest in shares, which are offering better returns than bank deposits.
With more than $100 billion sitting in low-interest bank deposit accounts, Shareholders Association John Hawkins said people are chasing better returns.
However, interest rate rises, which could resume by December, are expected to slow the pace of growth in shares.
Mr Hawkins said he does not expect the growth in the sharemarket to continue at its current pace.