Joel Greenblatt acquired 36 Thousand Oneok shares worth $2.92 Million. That's 0.05% of their equity portfolio (468th largest holding). The first Oneok trade was made in Q1 2016. Since then Joel Greenblatt bought shares twelve more times and sold shares on eleven occasions. The stake costed the investor $2.14 Million, netting the investor a gain of 36% so far.