the guðmundsson brothers' advisors, deloitte, came under scrutiny for its advisory role when the brothers repurchased a major stake in bakkavör from their investment company, exista, in 2009. the company delisted from the nasdaq omx in iceland in 2010. lýdur and ágúst guðmundsson, faced fraud charges in iceland in 2012 relating to their ownership of exista.