964 institutions reported holding $21.05B of PACKAGING CORP AMER (PKG) in SEC 13F filings for 2026-06-30. Largest institutional holders: VANGUARD GROUP INC ($2.66B), BlackRock, Inc. ($1.84B), PRICE T ROWE ASSOCIATES INC /MD/ ($1.39B), STATE STREET CORP ($1.11B), JPMORGAN CHASE & CO ($882.4M). Source: SEC Form 13F.
Source: SEC Form 13F filings · as of 2026-06-30