Shares of auto retail ecosystem companies have outperformed year-to-date, despite the announcement of auto tariffs and industry fundamentals weakening "even before the impact of tariffs have flowed through to vehicle pricing," according to JPMorgan.Analyst Rajat Gupta changed ratings on these four stocks.Cars.comJPMorgan upgraded the rating for Cars.com Inc CARS from Neutral to Overweight, while establishing a price target of $14.Shares of companies in the business-to-consumer)marketplaces have underperform ...