The current institutional shareholding score of Ecovyst Inc is 10.00, ranking 1 out of 68 in the Chemicals industry. The latest institutional shareholding proportion is 110.66%, representing a quarter-over-quarter decrease of 7.76%. The largest institutional shareholder is HOTCHKIS & WILEY, holding a total of 4.99M shares, representing 4.95% of shares outstanding, with 0.07% increase in holdings.