Packaging CORP of America Schedule 13G passive stakes

State Street Corporation has reported a beneficial ownership of 5.2% in Packaging Corp of America, holding 4,620,150 shares as of June 30, 2026.

Vanguard Capital Management has reported a beneficial ownership of 7.54% in Packaging Corp of America's common stock as of March 31, 2026.

The Vanguard Group filed an amended Schedule 13G, indicating a 0% beneficial ownership in Packaging Corp of America following an internal realignment.

BlackRock, Inc. has filed an Amendment No. 3 to its Schedule 13G, disclosing a continued 8.3% beneficial ownership stake in Packaging Corp of America as of March 31, 2025.