Jim Simons acquired 1.6 Million Catalyst Pharmaceuticals shares worth $24.1 Million. That's 0.04% of their equity portfolio (524th largest holding). The investor owns 1.33% of the outstanding Catalyst Pharmaceuticals stock. The first Catalyst Pharmaceuticals trade was made in Q3 2013. Since then Jim Simons bought shares eighteen more times and sold shares on twelve occasions. The stake costed the investor $16.4 Million, netting the investor a gain of 47% so far.