STORY: Stellantis CEO Antonio Filosa will pitch a new long-term strategy to investors Thursday.It’ll focus on reviving crucial U.S. sales, tightening the group’s portfolio, and leveraging deals with Chinese firms.It’s a crunch point for Filosa who was brought in last year to turn around the Jeep and Peugeot-maker’s flagging fortunes after it lost ground in the U.S. and Europe. But shares in the world’s No. 4 automaker by sales hit an all-time low in March this year.Stellantis’ new strategy is expected to focus funding on a group of four core brands…While aiming to expand joint ventures with Chinese brands to trim costs and make use of capacity.One analyst…