Tom Russo's position in Martin Marietta Materials is currently worth $401 Million. That's 4.09% of their equity portfolio (10th largest holding). The investor owns 1.76% of the outstanding Martin Marietta Materials stock. The first Martin Marietta Materials trade was made in Q1 1999. Since then Tom Russo bought shares 50 more times and sold shares on 41 occasions. The stake costed the investor $109 Million, netting the investor a gain of 268% so far.