Jim Simons's position in Builders Firstsource is currently worth $64.4 Million. That's 0.08% of their equity portfolio (269th largest holding). The first Builders Firstsource trade was made in Q4 2013. Since then Jim Simons bought shares nineteen more times and sold shares on sixteen occasions. The stake costed the investor $39.6 Million, netting the investor a gain of 63% so far.