Joel Greenblatt acquired 144 Thousand Alliant Energy shares worth $8.78 Million. That's 0.09% of their equity portfolio (326th largest holding). The first Alliant Energy trade was made in Q1 2016. Since then Joel Greenblatt bought shares eleven more times and sold shares on seven occasions. The stake costed the investor $7.64 Million, netting the investor a gain of 15% so far.