The current institutional shareholding score of American Water Works Company Inc is 10.00, ranking 1 out of 14 in the Water & Related Utilities industry. The latest institutional shareholding proportion is 106.67%, representing a quarter-over-quarter increase of 7.84%. The largest institutional shareholder is ETHSX, holding a total of 1.70M shares, representing 0.80% of shares outstanding, with 9202.33% increase in holdings.