Visium Asset Management LP, a $4.5 billion hedge fund firm, said on Thursday that it is forming a new investment platform focused on healthcare royalties. The company has hired four people from Paul Capital, a private investment firm, to run the platform. They are Dr. Ken Macleod, John Leone, David Lippman and Julie Rahman. All will join Visium on June 1, 2013. The group will be based in Visium’s New York and London offices. Also, as part of Visium, they will also serve as sub-advisors to Paul Capital’s existing healthcare and royalty funds.