Jeremy Grantham acquired 45.4 Thousand Arch Capital Group Ltd shares worth $4.15 Million. That's 0.02% of their equity portfolio (292nd largest holding). The first Arch Capital Group Ltd trade was made in Q1 2013. Since then Jeremy Grantham bought shares eleven more times and sold shares on eight occasions. The stake costed the investor $3.63 Million, netting the investor a gain of 14% so far.