The latest news for the company on the regulatory and analysis fronts wasn't encouraging.A regulatory development across the Atlantic Ocean and an analyst's recommendation downgrade were deciding factors in the decline of Amazon (AMZN 4.42%) stock on Tuesday. On those less-than-encouraging pieces of news they sold out of the mighty retail and tech company to leave it with a more than 4% loss in share price on the day.A regulatory upgrade, and an analyst downgradeThat day, the European Union (EU) designated ...