The current institutional shareholding score of Comfort Systems USA Inc is 10.00, ranking 1 out of 41 in the Construction & Engineering industry. The latest institutional shareholding proportion is 97.01%, representing a quarter-over-quarter decrease of 6.54%. The largest institutional shareholder is ETHSX, holding a total of 192.89K shares, representing 0.74% of shares outstanding, with 250.88% increase in holdings.