The current institutional shareholding score of Amentum Holdings Inc is 10.00, ranking 1 out of 42 in the Construction & Engineering industry. The latest institutional shareholding proportion is 105.58%, representing a quarter-over-quarter decrease of 4.28%. The largest institutional shareholder is Steven Cohen, holding a total of 1.84M shares, representing 0.67% of shares outstanding, with 0.39% increase in holdings.