NurPhoto / Getty Images

Stellantis $STLA unveiled a five-year strategic plan Thursday calling for €60 billion ($70 billion) in investment through 2030, while Stellantis stock fell as much as 7.4% in Milan as investors appeared to expect more aggressive steps to streamline the company's 14-brand portfolio, according to Bloomberg.

The plan, called "FaSTLAne 2030," concentrates roughly 70% of spending on four designated global brands: Jeep, Ram, Peugeot, and Fiat. Chrysler, Alfa Romeo, Dodge, Citroën, and Opel will take more regional roles while benefiting from group spending on shared platforms and technologies, according to Bloomberg. Rather than cutting any marques from its 14-brand roster, Stellantis said it will absorb DS into Citroën and fold Lancia's operations under Fiat.

Brand portfolio investments totaling €36 billion are earmarked to bring more than 60 entirely new vehicles to market, along with significant updates to another 50 models spanning battery-electric, hybrid, and conventional gasoline powertrains. A separate €24 billion allocation covers the development of shared vehicle platforms and next-generation technologies, Stellantis said. Arriving in 2027, the so-called STLA One architecture would replace five separate platforms with a unified underpinning structure; Stellantis says the move should deliver 20% lower costs, and by decade's end it expects half of total output to ride on shared global platforms with component commonality reaching as high as 70%.