Key PointsStellantis shipments in North America jumped 17% during the first quarter.Tariff refunds helped turn North America adjusted operating income positive.There was downside in the earnings, too, and investors still have questions.10 stocks we like better than Stellantis › Stellantis (NYSE: STLA) has a lot on its plate right now. The automaker is undergoing a new leadership transition, making tough decisions about overcapacity in North Amer…