Oppenheimer Asset Management, a unit of New York-listed Oppenheimer Holdings, has appointed Tim Pynchon as managing director and portfolio manager for high-yield, tax-exempt funds.

He will be based in Boston, MA.

Pynchon - latterly of Pioneer Investment Management - has worked in the asset management business since 1982. Throughout his career, he has focused on high-yield, tax-exempt fixed income products, working as a portfolio manager, underwriter, analyst and restructuring specialist.

Oppenheimer & Co and its affiliates provide wealth management, securities brokerage and investment banking services to high net worth individuals, families, corporate executives, local governments, businesses and institutions.