Tom Russo acquired 3.51 Thousand MerckInc shares worth $461 Thousand. That's 0.00% of their equity portfolio (63rd largest holding). The first MerckInc trade was made in Q4 2009. Since then Tom Russo bought shares fifteen more times and sold shares on twenty occasions. The stake costed the investor $273 Thousand, netting the investor a gain of 69% so far.