The Pittsburgh banking company said in September that it would buy the Rhode Island advisory firm, which specializes in high-net-worth investors and families. The deal's terms were not disclosed.
Providence Group adds more than $800 million of client assets to Mellon. Its purchase was one of three deals this year by Mellon's private wealth management group and the seventh in four years. Mellon bought Las Vegas-based Paragon Asset Management in September and Seattle-based Safeco Trust Co. in April.
Mellon is a global financial services company with $670 billion under management.