Joel Greenblatt acquired 35.6 Thousand F5 shares worth $6.69 Million. That's 0.12% of their equity portfolio (209th largest holding). The first F5 trade was made in Q3 2011. Since then Joel Greenblatt bought shares 24 more times and sold shares on 24 occasions. The stake costed the investor $4.13 Million, netting the investor a gain of 62% so far.