Tom Russo acquired 3.81 Thousand MerckInc shares worth $488 Thousand. That's 0.00% of their equity portfolio (64th largest holding). The first MerckInc trade was made in Q4 2009. Since then Tom Russo bought shares fifteen more times and sold shares on nineteen occasions. The stake costed the investor $296 Thousand, netting the investor a gain of 65% so far.