Fidelity Transitions to Arnold

Arnold has begun ad-dressing creative and staffing issues on its expanded Fidelity Investments business following the agency’s appointment last week to succeed Hill, Holliday, Connors, Cosmopulos on the client’s mutual funds and retirement services advertising.

Pam Hamlin, a group account director and one of the Boston agency’s nine managing partners, will oversee Fidelity, an agency representative said.

Hamlin and several other Arnold executives either did not return calls or declined comment, citing Fidelity’s well-known penchant for secrecy concerning its relationships with outside vendors.

Arnold chairman and CEO Ed Eskandarian called Fidelity one of the shop’s five largest accounts.