Baillie Gifford's position in Costar Group is currently worth $761M. That's 0.55% of their equity portfolio (34th largest holding). The investor owns 2.01% of the outstanding Costar Group stock. The first Costar Group trade was made in Q3 2016. Since then Baillie Gifford bought shares nineteen more times and sold shares on sixteen occasions. The stake costed the investor $600M, netting the investor a gain of 27% so far.