George Soros's position in MerckInc is currently worth $29.6 Million. That's 1.05% of their equity portfolio (20th largest holding). The first MerckInc trade was made in Q4 2009. Since then George Soros bought shares five more times and sold shares on nine occasions. The stake costed the investor $23.4 Million, netting the investor a gain of 27% so far.