Jim Simons acquired 335 Thousand W.R. Berkley shares worth $24.7 Million. That's 0.04% of their equity portfolio (554th largest holding). The first W.R. Berkley trade was made in Q2 2013. Since then Jim Simons bought shares 21 more times and sold shares on 22 occasions. The stake costed the investor $20.3 Million, netting the investor a gain of 22% so far.