Ken Griffin's position in Diamondback Energy is currently worth $26.1 Million. That's 0.03% of their equity portfolio (644th largest holding). The first Diamondback Energy trade was made in Q2 2013. Since then Ken Griffin bought shares 52 more times and sold shares on 44 occasions. The stake costed the investor $19.9 Million, netting the investor a gain of 31% so far.