The current institutional shareholding score of Powell Industries Inc is 10.00, ranking 1 out of 182 in the Machinery, Tools, Heavy Vehicles, Trains & Ships industry. The latest institutional shareholding proportion is 104.02%, representing a quarter-over-quarter increase of 4.09%. The largest institutional shareholder is ETHSX, holding a total of 167.97K shares, representing 0.76% of shares outstanding, with 111.11% increase in holdings.