Stellantis N.V. (STLA) has been grappling with declining sales and market share, a trend that began before this year. In 2023, it was an outlier among competitors as its losses surpassed competitors and its market share fell below General Motors, Toyota, Ford and even Hyundai. The company has reported multiple consecutive quarters with sales declines of 20% or more in the United States. Recently, its U.S. market share dropped below Honda's. Losing market share appears to be a significant shift for a company ...