On December 31, 2023, the investment firm managed by Chuck Royce (Trades, Portfolio) reported a significant transaction involving Matrix Service Co (NASDAQ:MTRX), an engineering and construction provider. This adjustment left the firm with a total of 896,259 shares in the company, which now represents a 0.09% impact on the portfolio and a 3.29% ownership of MTRX's outstanding shares. Charles M. Royce, a notable figure in the investment world, is renowned for his expertise in small-cap investing.