The current institutional shareholding score of Qualys Inc is 10.00, ranking 1 out of 489 in the Software & IT Services industry. The latest institutional shareholding proportion is 118.64%, representing a quarter-over-quarter increase of 14.53%. The largest institutional shareholder is James Simons, holding a total of 0.00 shares, representing 1.41% of shares outstanding, with 0.21% decrease in holdings.