French advertising group Publicis said organic sales growth was a disappointing 1.0 percent in the third quarter, blaming mainly its focus on "other plans" - a reference to this year's failed merger with U.S.-based Omnicom.

"We are at the end of this cycle and very confident of the future," Chairman and Chief Executive Maurice Levy said in a statement, but he told reporters the third quarter result "does not match market expectations or our own".