George Soros acquired 1.16M Interpublic Group Of Cos. shares worth $31.5M. That's 1.09% of their equity portfolio (31st largest holding). The first Interpublic Group Of Cos. trade was made in Q3 2010. Since then George Soros bought shares seven more times and sold shares on five occasions. The stake costed the investor $29.1M, netting the investor a gain of 8.1% so far.