Almost 300 institutional investors in Volkswagen have filed a multi-billion euro suit against the carmaker for what they see as breaches of its capital markets duty in the emissions scandal, the law firm representing them said. The lawsuit, for damages of 3.256 billion euro ($3.61 billion), was filed at a regional court in Braunschweig in VW's home state of Lower Saxony on Monday and is being brought by 278 investors from all over the world, including German insurers and U.S. pension fund Calpers.