Mr Riggall steps into the new role at the boutique after nearly five years at REST Super Investment Management.
Before that, he was in a similar position at Wallara Asset Management, and, prior to that, spent eight years at AMP Capital and AMP Capital Investors, where he held various roles in portfolio management.
In a statement, Ralton head of Australian equities Andrew Stanley said the team was “delighted” to have Mr Riggall join.
“He brings over 15 years’ experience having held senior portfolio management roles within the investment and superannuation industry,” Mr Stanley said.
Chief executive officer of parent company Copia Investment Partners Sam Baillieu added, “It’s pleasing to see Ralton attract such an experienced investment management professional.
“Will has the experience to help Ralton continue to build its reputation as a specialist managed accounts provider, while bringing complementary investment management skills to the team,” Mr Baillieu said.