美國包裝公司
MX ˙ BMV ˙ US6951561090
SecurityMX:PKG / Packaging Corporation of America
InstitutionWoodline Partners LP
Latest Disclosed Ownership17,529 shares
Latest Disclosed Value $ 3,720,004
Woodline Partners LP reports 83.52% decrease in ownership of PKG / Packaging Corporation of America

On May 15, 2026 - Woodline Partners LP filed a 13F-HR/A form disclosing ownership of 17,529 shares of Packaging Corporation of America (MX:PKG) valued at $3,720,004 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 106,375 shares of Packaging Corporation of America. This represents a change in shares of -83.52% during the quarter.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-15 2026-03-31 13F/A-1 PACKAGING CORP AMER COM 695156109 17,529 -88,846 -83.52 3,720 -83.04 0.0141
2026-05-15 2026-03-31 13F PACKAGING CORP AMER COM 695156109 17,529 -88,846 3,720 0.0141
2026-02-17 2025-12-31 13F PACKAGING CORP AMER COM 695156109 106,375 -7,746 -6.79 21,938 -11.79 0.0850
2025-11-14 2025-09-30 13F PACKAGING CORP AMER COM 695156109 114,121 -53,176 -31.79 24,870 -21.12 0.1171
2025-08-14 2025-06-30 13F PACKAGING CORP AMER COM 695156109 167,297 19,390 13.11 31,527 7.64 0.1665
2025-05-15 2025-03-31 13F PACKAGING CORP AMER COM 695156109 147,907 92,479 166.85 29,289 134.72 0.1905
2025-02-14 2024-12-31 13F PACKAGING CORP AMER COM 695156109 55,428 11,086 25.00 12,479 30.65 0.0844
2024-11-14 2024-09-30 13F PACKAGING CORP AMER COM 695156109 44,342 44,342 9,551 0.0804
2023-11-14 2023-09-30 13F PACKAGING CORP AMER COM 695156109 0 -81,198 -100.00 0 -100.00
2023-08-14 2023-06-30 13F PACKAGING CORP AMER COM 695156109 81,198 81,198 10,731 0.1272
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.