The BOD will make decisions that are best for the company and majority of shareowners... Swedish laws do have protection for minority shareowners but I think it's safe to assume that if GE has 60% interest and that interest is represented on the BOD than they will be guiding the ship one way or another...
This would probably be a good thing for minority shareowners as well... I think GE would have a vested interest in keep the PPS at least as high as their purchase price as they probably would not have any interest in writing it down. Under GAAP they would have to test the carry value of the investment in Arcam each year and thus would not want to fail that test...
So I think we would be in very good hands in that instance...