Joel Greenblatt acquired 1.34 Thousand Quest Diagnostics shares worth $237 Thousand. That's 0.00% of their equity portfolio (1234th largest holding). The first Quest Diagnostics trade was made in Q4 2010. Since then Joel Greenblatt bought shares 25 more times and sold shares on 29 occasions. The stake costed the investor $174 Thousand, netting the investor a gain of 36% so far.