The current institutional shareholding score of Marchex Inc is 5.00, ranking 35 out of 77 in the Media & Publishing industry. The latest institutional shareholding proportion is 66.92%, representing a quarter-over-quarter increase of 4.79%. The largest institutional shareholder is James Simons, holding a total of 0.00 shares, representing 3.67% of shares outstanding, with 9.36% decrease in holdings.