Joel Greenblatt acquired 55.6 Thousand Public Storage. shares worth $16.3 Million. That's 0.13% of their equity portfolio (183rd largest holding). The first Public Storage. trade was made in Q4 2016. Since then Joel Greenblatt bought shares seventeen more times and sold shares on thirteen occasions. The stake costed the investor $15.1 Million, netting the investor a gain of 8.0% so far.