Investors pulled more than $840 million from Platinum Asset Management in one month alone, capping a tough year for the company during which it lost almost 30 per cent of its funds under management.

In an update late on Friday, the prominent equities investment house said funds under management were at $10.96 billion at the end of November, falling from $12.2 billion one month earlier. Outflows totalled $841 million including one institutional mandate of $537 million. The balance of the slump was attributed to the poor performance of its funds.