SAN FRANCISCO--(BUSINESS WIRE)--Robertson Stephens, a wealth advisory and investment management firm for high net worth individuals and families, announced today that Ren Riley has been named Managing Director of Robertson Stephens Advisors LLC, a member of its Executive Committee, and President of Robertson Stephens Partners. Leveraging his global principal investment experience, Mr. Riley will lead the firm's alternative assets effort which includes a Robertson Stephens-branded venture capita