Arnold McGrath Loses Rest of AT&T Broadband Biz

NEW YORK — AT&T Broadband, the cable operation that three weeks ago agreed to merge with Comcast, has ended its five-year relationship with Arnold McGrath. The New York-based agency’s contract expired recently and was not renewed, sources said.

At the height of its tenure at Arnold, the account was worth an estimated $40 million in billings, sources said. Arnold referred calls to the client, who declined comment.

The agency lost its grip on the account during the past year, as the Denver-based client sought ideas elsewhere.