The Vanguard Group has assigned new roles to two of its senior leaders.

Karin A. Risi, formerly principal with Vanguard Advice Services group, will head Vanguard’s Retail Investor Group.  The group, with $1.26 trillion in assets and more than 6 million clients, provides mutual funds, financial planning and wealth management services, and brokerage services to Vanguard’s individual investor clients.

Thomas M. Rampulla, managing director of Vanguard Europe, will direct Vanguard’s Financial Advisor Services division. The division has more than $1 trillion in assets and provides investments, services, education and research to more than 1,000 financial advisory firms.

Both will report directly to Vanguard CEO Bill McNabb.

Risi joined Vanguard in 1997 and has held various leadership roles within the company’s Retail, Institutional and Corporate divisions.

Rampulla joined Vanguard in 1988 and has worked in Vanguard’s Financial division, Fixed Income Group, Institutional Sales and Marketing and as a portfolio manager with Vanguard’s Stable Value Management team.

Risi and Rampulla join the 11-member team responsible for leading Vanguard and its operations.