BAD WEEK

VW Volkswagen CEO Martin Winterkorn resigns amid disclosure that the German automaker put software in diesel vehicles designed to fool emissions tests.

Martin Turing Pharmaceuticals’ CEO is Shkreli shamed into lowering the price of drug to treat parasite infections after he had raised it from $13.50 to $750 a pill.

Scott Wisconsin governor’s withdrawal Walker from presidential race, winnows the GOP field to 15. Who’s next?