Jeremy Grantham's position in Ameresco is currently worth $216 Million. That's 1.21% of their equity portfolio (23rd largest holding). The investor owns 9.99% of the outstanding Ameresco stock. The first Ameresco trade was made in Q2 2017. Since then Jeremy Grantham bought shares seven more times and sold shares on four occasions. The stake costed the investor $184 Million, netting the investor a gain of 17% so far.