Sony got a stake in Olympus' future when it made a $645 million investment into the troubled camera firm last September, getting a board representative and a controlling share of a medical imaging project. As of this weekend, however, the foot is that much further in the door: it's now Olympus' largest shareholder. A share transfer promised alongside the investment, and officially completed on the 22nd, has boosted Sony's stake from 4.7 percent to just under 11.5 percent. The
