The current institutional shareholding score of Phathom Pharmaceuticals Inc is 7.00, ranking 51 out of 157 in the Pharmaceuticals industry. The latest institutional shareholding proportion is 87.57%, representing a quarter-over-quarter increase of 13.56%. The largest institutional shareholder is James Simons, holding a total of 0.00 shares, representing 0.38% of shares outstanding, with 0.89% decrease in holdings.