Joel Greenblatt acquired 246 Thousand NiSource shares worth $9.94 Million. That's 0.08% of their equity portfolio (334th largest holding). The first NiSource trade was made in Q3 2015. Since then Joel Greenblatt bought shares thirteen more times and sold shares on six occasions. The stake costed the investor $9.23 Million, netting the investor a gain of 7.8% so far.