Jeremy Grantham acquired 820 Thousand Cigna Corp. shares worth $218 Million. That's 1.19% of their equity portfolio (22nd largest holding). The first Cigna Corp. trade was made in Q4 2018. Since then Jeremy Grantham bought shares four more times and sold shares on three occasions. The stake costed the investor $181 Million, netting the investor a gain of 20% so far.