Coca-Cola has launched a review of its US media buying and planning account, worth around $400m.

Incumbent Starcom MediaVest Group (SMG), which has held the account for more than a decade, will take part in the review alongside MediaCom, Carat and UM, which all hold various parts of the Coke account globally.

A spokesperson for Coke told AdAge: “We have a very productive and strong relationship with Starcom Mediavest Group that has served both companies very well for the last 11 years. Over this period, SMG has continually improved and strengthened its offering and remains a valued partner.”

She added: “As the media marketplace reshapes and reinvents itself, we frequently take the opportunity to formally review our media partners all around the world. Continued appraisal of our partners ensures we are both working with, and acting as, the best partners to create the most value at the right price.”

Final presentations are expected to take place in July.