Over first six months of year, the CPP Fund has grown $18.3 billion from $105.5 billion at the end of last fiscal year end, said the CPP Investment Board, the body that invests funds not needed by the Canada Pension Plan to pay benefits to its 17 million contributors and beneficiaries.

The fund's level at the end of the quarter was above the previous highest year-end level recorded on March 31.

According to the most recent chief actuary's report in 2007, the public pension plan is sustainable throughout its projected 75-year time frame, with a 4.2 per cent real rate of return. A new report is expected in 2010.

The fund is currently comprised of a 55.8 per cent weighting in equities and 30.7 per cent in fixed income investments, including bonds and money market securities.