Packaging Corporation of America
US ˙ NYSE ˙ US6951561090

SecurityPKG / Packaging Corporation of America
InstitutionJanus Henderson Group Plc
Latest Disclosed Ownership9,682 shares
Latest Disclosed Value $ 2,054,859
Janus Henderson Group Plc reports 5.24% decrease in ownership of PKG / Packaging Corporation of America

On May 18, 2026 - Janus Henderson Group Plc filed a 13F-HR/A form disclosing ownership of 9,682 shares of Packaging Corporation of America (US:PKG) valued at $2,054,714 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 10,217 shares of Packaging Corporation of America. This represents a change in shares of -5.24% during the quarter. The current value of the position is $2,172,544 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.

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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)
2026-05-18 2026-03-31 13F/A-1 PACKAGING CORP AMER COM 695156109 9,682 -535 -5.24 2,055 -2.56 0.0003
2026-05-15 2026-03-31 13F PACKAGING CORP AMER COM 695156109 9,682 -535 -5.24 2,055 -2.56 0.0004
2026-02-17 2025-12-31 13F PACKAGING CORP AMER COM 695156109 10,217 178 1.77 2,108 -3.61 0.0009
2025-11-14 2025-09-30 13F PACKAGING CORP AMER COM 695156109 10,039 0 0.00 2,188 15.71 0.0010
2025-08-14 2025-06-30 13F PACKAGING CORP AMER COM 695156109 10,039 -379 -3.64 1,891 -7.13 0.0009
2025-05-15 2025-03-31 13F PACKAGING CORP AMER COM 695156109 10,418 408 4.08 2,035 -9.64 0.0011
2025-02-14 2024-12-31 13F PACKAGING CORP AMER COM 695156109 10,010 904 9.93 2,253 14.84 0.0011
2024-11-14 2024-09-30 13F PACKAGING CORP AMER COM 695156109 9,106 -300 -3.19 1,961 14.21 0.0010
2024-08-14 2024-06-30 13F PACKAGING CORP AMER COM 695156109 9,406 -50,894 -84.40 1,717 -84.99 0.0009
2024-05-15 2024-03-31 13F PACKAGING CORP AMER COM 695156109 60,300 -4,865 -7.47 11,437 7.66 0.0062
2024-02-14 2023-12-31 13F PACKAGING CORP AMER COM 695156109 65,165 52,029 396.08 10,623 426.62 0.0063
2023-11-14 2023-09-30 13F PACKAGING CORP AMER COM 695156109 13,136 -651 -4.72 2,018 10.70 0.0013
2023-08-14 2023-06-30 13F PACKAGING CORP AMER COM 695156109 13,787 -1,514 -9.89 1,822 -14.18 0.0011
2023-05-15 2023-03-31 13F PACKAGING CORP AMER COM 695156109 15,301 2,869 23.08 2,124 33.52 0.0014
2023-02-14 2022-12-31 13F PACKAGING CORP AMER COM 695156109 12,432 0 0.00 1,590 13.98 0.0011
2023-01-13 2022-09-30 13F/A-1 PACKAGING CORP AMER COM 695156109 12,432 33 0.27 1,395 -18.18 0.0010
2022-11-14 2022-09-30 13F PACKAGING CORP AMER COM 695156109 12,432 33 1,395 0.0010
2022-08-15 2022-06-30 13F PACKAGING CORP AMER COM 695156109 12,399 -19,906 -61.62 1,705 -66.20 0.0012
2022-05-16 2022-03-31 13F PACKAGING CORP AMER COM 695156109 32,305 14,538 81.83 5,044 108.52 0.0024
2022-02-14 2021-12-31 13F PACKAGING CORP AMER COM 695156109 17,767 -938 -5.01 2,419 -5.88 0.0010
2021-11-16 2021-09-30 13F PACKAGING CORP AMER COM 695156109 18,705 -14,434 -43.56 2,570 -42.72 0.0011
2021-08-16 2021-06-30 13F PACKAGING CORP AMER COM 695156109 33,139 -19,983 -37.62 4,487 -37.19 0.0019
2021-05-17 2021-03-31 13F PACKAGING CORP AMER COM 695156109 53,122 -160,663 -75.15 7,144 -75.77 0.0033
2021-02-16 2020-12-31 13F PACKAGING CORP AMER COM 695156109 213,785 20,909 10.84 29,482 40.16 0.0137
2020-11-16 2020-09-30 13F PACKAGING CORP AMER COM 695156109 192,876 -22,455 -10.43 21,034 -2.12 0.0110
2020-08-14 2020-06-30 13F PACKAGING CORP AMER COM 695156109 215,331 85,228 65.51 21,490 90.24 0.0121
2020-05-14 2020-03-31 13F PACKAGING CORP AMER COM 695156109 130,103 -244,696 -65.29 11,296 -73.09 0.0078
2020-02-18 2019-12-31 13F PACKAGING CORP AMER COM 695156109 374,799 283,347 309.83 41,973 332.58 0.0215
2019-11-14 2019-09-30 13F PACKAGING CORP AMER COM 695156109 91,452 48,599 113.41 9,703 137.47 0.0053
2019-07-31 2019-06-30 13F PACKAGING CORP AMER COM 695156109 42,853 20,049 87.92 4,086 80.24 0.0022
2019-04-30 2019-03-31 13F PACKAGING CORP AMER COM 695156109 22,804 -4,743 -17.22 2,267 -1.39 0.0013
2019-02-06 2018-12-31 13F PACKAGING CORP AMER COM 695156109 27,547 -394,146 -93.47 2,299 -95.03 0.0015
2018-11-09 2018-09-30 13F PACKAGING CORP AMER COM 695156109 421,693 -304,538 -41.93 46,256 -43.02 0.0247
2018-08-10 2018-06-30 13F PACKAGING CORP AMER COM 695156109 726,231 -315,911 -30.31 81,186 -30.88 0.0463
2018-05-14 2018-03-31 13F PACKAGING CORP AMER COM 695156109 1,042,142 -370 -0.04 117,450 -6.54 0.0692
2018-03-12 2017-12-31 13F/A-1 PACKAGING CORP AMER COM 695156109 1,042,512 168,848 19.33 125,675 25.43 0.0774
2018-02-09 2017-12-31 13F PACKAGING CORP AMER COM 695156109 1,042,512 168,848 125,675
2017-11-14 2017-09-30 13F PACKAGING CORP AMER COM 695156109 873,664 275,933 46.16 100,192 50.47 0.0642
2017-08-17 2017-06-30 13F/A-1 PACKAGING CORP AMER COM 695156109 597,731 588,295 6,234.58 66,587 7,597.92 0.0454
2017-08-14 2017-06-30 13F PACKAGING CORP AMER COM 695156109 597,731 588,295 66,587
2017-05-03 2017-03-31 13F PACKAGING CORP AMER COM 695156109 9,436 0 0.00 865 7.99 0.0061
2017-01-30 2016-12-31 13F PACKAGING CORP AMER COM 695156109 9,436 1,300 15.98 801 21.18 0.0059
2016-10-24 2016-09-30 13F PACKAGING CORP AMER COM 695156109 8,136 0 0.00 661 21.28 0.0049
2016-07-29 2016-06-30 13F PACKAGING CORP AMER COM 695156109 8,136 0 0.00 545 11.00 0.0045
2016-05-12 2016-03-31 13F PACKAGING CORP AMER COM 695156109 8,136 0 0.00 491 -4.29 0.0040
2016-02-03 2015-12-31 13F PACKAGING CORP AMER COM 695156109 8,136 0 0.00 513 4.91 0.0041
2015-11-16 2015-09-30 13F PACKAGING CORP AMER COM 695156109 8,136 0 0.00 489 -3.74 0.0043
2015-08-17 2015-06-30 13F PACKAGING CORP AMER COM 695156109 8,136 8,136 508 0.0040
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.