Tom Russo's position in Martin Marietta Materials is currently worth $436M. That's 0.94% of their equity portfolio (10th largest holding). The investor owns 1.19% of the outstanding Martin Marietta Materials stock. The first Martin Marietta Materials trade was made in Q1 1999. Since then Tom Russo bought shares 52 more times and sold shares on 54 occasions. The stake costed the investor $78.2M, netting the investor a gain of 457% so far.