Natixis Advisors LLC increased its stake in Martin Marietta Materials to 97,554 shares valued at $52.5 million, while Mizuho Securities USA LLC raised its holdings by 197.5% to 14,152 shares worth $7.6 million. The company, a key supplier of building materials, reported a quarterly EPS of $5.91, missing estimates, with revenue down 5.3% year-over-year. Institutional investors own 95.04% of the stock, which has a "Moderate Buy" rating from analysts, with a consensus price target of $634.85.