The logo of Stellantis, the world's fourth-largest automaker which starts trading in Milan and Paris after Fiat Chrysler and Peugeot maker PSA finalised their merger, is seen on a flag at the main entrance of FCA Mirafiori plant in Turin, Italy, January 18, 2021. REUTERS/Massimo Pinca

The French-Italian company's sprawling portfolio — the largest among its peers, which mostly focus on one or two brands — reflects its origins in a 2021 merger of Fiat-Chrysler and Peugeot owner PSA.