The current institutional shareholding score of Amphenol Corp is 10.00, ranking 1 out of 60 in the Electronic Equipment & Parts industry. The latest institutional shareholding proportion is 99.68%, representing a quarter-over-quarter increase of 1.01%. The largest institutional shareholder is ETHSX, holding a total of 9.13M shares, representing 0.83% of shares outstanding, with 1839.25% increase in holdings.