Former Aetna News Today : Breaking News, Live Updates & Top Stories | Vimarsana

Former Aetna CEO Mark Bertolini has been named co-CEO of Westport-based Bridgewater Associates, the world’s largest hedge fund, the same day its current corporate chief, David McCormick, announced he will step down to consider a run for the U.S. Senate. Bertolini, who previously served as co-chair of Bridgewater’s operating board of directors, will share leadership responsibilities with Nir Bar Dea, who was also named co-CEO on Monday.

Listen • 5:01 Jeff Bezos, founder of Amazon and space tourism company Blue Origin, jogs onto his rocket landing pad ahead of his trip to the edge on Space on Tuesday. When top executives like Bezos have dangerous hobbies, there's often little company boards can do. When Jeff Bezos returned to Earth after a trip to the edge of space, there were sighs of relief — and it's likely some of them were from board members of the $1.8 trillion company he started 27 years ago. For Amazon's founder and executive chairman, the trip on Tuesday aboard a rocket from his venture Blue O...