Aston Martin shaken and stirred as rivals power ahead

(Reuters) - Aston Martin warned its 2019 profits would almost halve due to weak European markets, sending its shares sharply lower as rivals Bentley and Rolls-Royce powered ahead. Tuesday's downgrade is the latest from the British luxury carmaker, whose shares have now plunged about three quarters in value since their 2018 listing.The 107-year-old firm, famed for being fictional agent James Bond's brand of choice, cut its forecast for wholesale volumes and profit margins in July, and reduced..