According to a report in InvestorDaily, unsolicited expressions of interest have prompted the firm to begin a formal process to examine a possible strategic partner to Pinnacle.

"The decision to seek external investment into Pinnacle follows receipt of a number of unsolicited expressions of interest, from organisations in Australia and overseas, interested in investing directly into the Pinnacle business to further its growth," Wilson said in a statement cited by the publication.

A strategic partner would provide the capital required to assist in growing Pinnacle and creating substantial additional value for all shareholders, it said.

Wilson HTM managing director Andrew Coppin said it was too early to comment on whether the inclusion of a strategic partner would result in the company selling down its stake.

Wilson has appointed corporate adviser Grant Samuel to assist with the process. The appointment of Grant Samuel follows Pinnacle's purchase yesterday of an equity interest in Sigma Funds Management.

Pinnacle is made up of seven boutiques and has funds under management of A$8.9 billion as of 30 September 2011.