Activist investor Chris Hohn's TCI Fund Management has taken a significant new position in Vulcan Materials (VMC), the largest producer of construction aggregates in the U.S. According to a quarterly filing that reveals trades made by June 30, 2026, TCI acquired approximately 2.45 million shares valued at nearly $722 million. This new stake represents 1.37% of TCI's reported portfolio.

This move into the materials sector is notable for TCI, which is known for its concentrated, high-conviction investments. While TCI has not publicly commented on its specific motive, the investment aligns with potential tailwinds for Vulcan, including increased infrastructure spending. As with all 13F filings, this disclosure reflects a position held at the end of the previous quarter, providing a delayed look at the firm's portfolio changes.