Jim Simons acquired 205 Berkshire Hathaway - Ordinary Shares shares worth $129 Million. That's 0.19% of their equity portfolio (114th largest holding). The first Berkshire Hathaway - Ordinary Shares trade was made in Q3 2013. Since then Jim Simons bought shares nineteen more times and sold shares on sixteen occasions. The stake costed the investor $106 Million, netting the investor a gain of 22% so far.