Howard Marks acquired 2.39M Ecovyst shares worth $31M. That's 0.72% of their equity portfolio (27th largest holding). The investor owns 2.14% of the outstanding Ecovyst stock. Howard Marks started to build up the position in Ecovyst in Q3 2025 and continued to invest until Q4 2025. Since then they sold 1.86M shares. The stake costed the investor $21M, netting the investor a gain of 47% so far.