Jeep division head Manley was named on Saturday to succeed Marchionne as CEO of Fiat Chrysler.
Ferrari named FCA Chairman and Agnelli family scion John Elkann as new chairman of the luxury sportscar group, while board member Louis Camilleri becomes chief executive. Trucks and tractor maker CNH Industrial appointed Suzanne Heywood to replace Marchionne as chairman.
By 0714 GMT, FCA shares were down 3.6 percent, Ferrari down 4.6 percent, CNH Industrial down 3.7 percent, while Exor, the investment holding of the Agnelli family that controls all three companies, was trading down 3.8 percent.
(Reporting by Agnieszka Flak; editing Francesca Landini)
