The current institutional shareholding score of Ironwood Pharmaceuticals Inc is 10.00, ranking 1 out of 157 in the Pharmaceuticals industry. The latest institutional shareholding proportion is 101.09%, representing a quarter-over-quarter increase of 7.19%. The largest institutional shareholder is James Simons, holding a total of 0.00 shares, representing 4.90% of shares outstanding, with 0.06% increase in holdings.