Packaging Corporation of America
US ˙ NYSE ˙ US6951561090

SecurityPKG / Packaging Corporation of America
InstitutionAtlas FRM LLC
Latest Disclosed Ownership1,532,500 shares
Latest Disclosed Value $ 325,227,150
Atlas FRM LLC reports 54.80% increase in ownership of PKG / Packaging Corporation of America

On May 14, 2026 - Atlas FRM LLC filed a 13F-HR form disclosing ownership of 1,532,500 shares of Packaging Corporation of America (US:PKG) valued at $325,227,150 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 990,000 shares of Packaging Corporation of America. This represents a change in shares of 54.80% during the quarter. The current value of the position is $343,877,675 USD.

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.

Upgrade to unlock premium data and export to Excel .

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)
2026-05-14 2026-03-31 13F PACKAGING CORP AMER COM 695156109 1,532,500 542,500 54.80 325,227 59.29 21.2943
2026-02-12 2025-12-31 13F PACKAGING CORP AMER COM 695156109 990,000 305,000 44.53 204,168 36.77 19.9416
2025-11-13 2025-09-30 13F PACKAGING CORP AMER COM 695156109 685,000 150,000 28.04 149,282 48.07 17.3818
2025-08-13 2025-06-30 13F PACKAGING CORP AMER COM 695156109 535,000 200,000 59.70 100,821 51.98 11.7401
2025-05-15 2025-03-31 13F PACKAGING CORP AMER COM 695156109 335,000 55,000 19.64 66,337 5.24 7.1094
2025-02-14 2024-12-31 13F PACKAGING CORP AMER COM 695156109 280,000 20,000 7.69 63,036 12.56 5.9515
2024-11-13 2024-09-30 13F PACKAGING CORP AMER COM 695156109 260,000 220,000 550.00 56,004 666.97 5.3919
2024-08-14 2024-06-30 13F PACKAGING CORP AMER COM 695156109 40,000 -285,000 -87.69 7,302 -88.16 0.9677
2024-05-14 2024-03-31 13F PACKAGING CORP AMER COM 695156109 325,000 -40,000 -10.96 61,678 3.73 8.3362
2024-02-12 2023-12-31 13F PACKAGING CORP AMER COM 695156109 365,000 -95,000 -20.65 59,462 -15.82 10.2455
2023-11-13 2023-09-30 13F PACKAGING CORP AMER COM 695156109 460,000 70,000 17.95 70,633 37.04 11.6657
2023-08-14 2023-06-30 13F PACKAGING CORP AMER COM 695156109 390,000 -160,000 -29.09 51,542 -32.50 9.8556
2023-05-12 2023-03-31 13F PACKAGING CORP AMER COM 695156109 550,000 0 0.00 76,356 8.54 15.2055
2023-02-14 2022-12-31 13F PACKAGING CORP AMER COM 695156109 550,000 120,000 27.91 70,350 45.70 13.6584
2022-11-14 2022-09-30 13F PACKAGING CORP AMER COM 695156109 430,000 430,000 48,285 14.2066
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.