Joel Greenblatt acquired 169 Thousand Aflac shares worth $18 Million. That's 0.18% of their equity portfolio (107th largest holding). The first Aflac trade was made in Q3 2012. Since then Joel Greenblatt bought shares 30 more times and sold shares on fifteen occasions. The stake costed the investor $10.3 Million, netting the investor a gain of 74% so far.