The current institutional shareholding score of Packaging Corp of America is 10.00, ranking 1 out of 22 in the Containers & Packaging industry. The latest institutional shareholding proportion is 99.94%, representing a quarter-over-quarter increase of 2.12%. The largest institutional shareholder is ETHSX, holding a total of 770.91K shares, representing 0.89% of shares outstanding, with 4078.40% increase in holdings.