The current institutional shareholding score of Chicago Rivet & Machine Co is 3.00, ranking 41 out of 71 in the Automobiles & Auto Parts industry. The latest institutional shareholding proportion is 21.60%, representing a quarter-over-quarter increase of 3.53%. The largest institutional shareholder is James Simons, holding a total of 0.00 shares, representing 2.94% of shares outstanding, with 0.02% decrease in holdings.