Ken Griffin's position in Beacon Roofing Supply is currently worth $23.2 Million. That's 0.02% of their equity portfolio (793rd largest holding). The first Beacon Roofing Supply trade was made in Q2 2013. Since then Ken Griffin bought shares 56 more times and sold shares on 52 occasions. The stake costed the investor $9.08 Million, netting the investor a gain of 155% so far.