Packaging Corporation of America
US ˙ NYSE ˙ US6951561090

SecurityPKG / Packaging Corporation of America
InstitutionWestpac Banking Corp
Latest Disclosed Ownership7,497 shares
Latest Disclosed Value $ 1,591,013
Westpac Banking Corp reports 1,303.93% increase in ownership of PKG / Packaging Corporation of America

On May 11, 2026 - Westpac Banking Corp filed a 13F-HR form disclosing ownership of 7,497 shares of Packaging Corporation of America (US:PKG) valued at $1,591,013 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 534 shares of Packaging Corporation of America. This represents a change in shares of 1,303.93% during the quarter. The current value of the position is $1,682,252 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)
2026-05-11 2026-03-31 13F PACKAGING CORP AMER COM 695156109 7,497 6,963 1,303.93 1,591 1,346.36 0.0554
2026-02-10 2025-12-31 13F PACKAGING CORP AMER COM 695156109 534 0 0.00 110 -5.17 0.0070
2025-11-14 2025-09-30 13F/A-1 PACKAGING CORP OF AMERICA USD 0.01 COM 695156109 534 0 0.00 116 16.00 0.0072
2025-11-12 2025-09-30 13F PACKAGING CORP OF AMERICA USD 0.01 COM 695156109 534 0 116 0.0029
2025-08-11 2025-06-30 13F PACKAGING CORP AMER COM 695156109 534 0 0.00 101 -4.76 0.0067
2025-05-13 2025-03-31 13F PACKAGING CORP AMER COM 695156109 534 0 0.00 106 -12.50 0.0078
2025-02-12 2024-12-31 13F PACKAGING CORP AMER COM 695156109 534 0 0.00 120 4.35 0.0080
2024-11-08 2024-09-30 13F PACKAGING CORP AMER COM 695156109 534 0 0.00 115 18.56 0.0077
2024-08-14 2024-06-30 13F/A-1 PACKAGING CORP AMER COM 695156109 534 0 0.00 97 -3.96 0.0077
2024-08-13 2024-06-30 13F PACKAGING CORP AMER COM 695156109 183 -351 97 0.0034
2024-05-09 2024-03-31 13F PACKAGING CORP AMER COM 695156109 534 20 3.89 101 21.69 0.0077
2024-02-08 2023-12-31 13F PACKAGING CORP AMER COM 695156109 514 -155 -23.17 84 -18.63 0.0069
2023-11-13 2023-09-30 13F PACKAGING CORP AMER COM 695156109 669 157 30.66 103 52.24 0.0077
2023-08-10 2023-06-30 13F PACKAGING CORP AMER COM 695156109 512 -9,020 -94.63 68 -94.94 0.0048
2023-05-04 2023-03-31 13F PACKAGING CORP AMER COM 695156109 9,532 3,317 53.37 1,323 66.62 0.0178
2023-02-06 2022-12-31 13F PACKAGING CORP AMER COM 695156109 6,215 177 2.93 795 17.11 0.0118
2022-11-08 2022-09-30 13F PACKAGING CORP AMER COM 695156109 6,038 0 0.00 678 -18.31 0.0103
2022-08-10 2022-06-30 13F PACKAGING CORP AMER COM 695156109 6,038 -356 -5.57 830 -16.83 0.0108
2022-05-11 2022-03-31 13F PACKAGING CORP AMER COM 695156109 6,394 -3,918 -37.99 998 -28.87 0.0115
2022-02-08 2021-12-31 13F PACKAGING CORP AMER COM 695156109 10,312 1,680 19.46 1,404 18.30 0.0145
2021-10-27 2021-09-30 13F PACKAGING CORP AMER COM 695156109 8,632 2,847 49.21 1,186 51.47 0.0127
2021-08-11 2021-06-30 13F PACKAGING CORP AMER COM 695156109 5,785 82 1.44 783 2.22 0.0079
2021-05-13 2021-03-31 13F PACKAGING CORP AMER COM 695156109 5,703 -4,519 -44.21 767 -45.64 0.0085
2021-02-11 2020-12-31 13F PACKAGING CORP AMER COM 695156109 10,222 2,119 26.15 1,410 59.57 0.0160
2020-11-10 2020-09-30 13F PACKAGING CORP AMER COM 695156109 8,103 -1,300 -13.83 884 -5.86 0.0120
2020-08-12 2020-06-30 13F PACKAGING CORP AMER COM 695156109 9,403 -700 -6.93 938 6.96 0.0140
2020-05-14 2020-03-31 13F PACKAGING CORP AMER COM 695156109 10,103 -73,922 -87.98 877 -90.68 0.0151
2020-02-11 2019-12-31 13F PACKAGING CORP AMER COM 695156109 84,025 407 0.49 9,410 6.06 0.1211
2019-11-13 2019-09-30 13F PACKAGING CORP AMER COM 695156109 83,618 -6,013 -6.71 8,872 3.84 0.1234
2019-08-01 2019-06-30 13F PACKAGING CORP AMER COM 695156109 89,631 -22,020 -19.72 8,544 -23.00 0.1305
2019-05-14 2019-03-31 13F PACKAGING CORP AMER COM 695156109 111,651 24,507 28.12 11,096 52.55 0.1832
2019-02-07 2018-12-31 13F PACKAGING CORP AMER COM 695156109 87,144 -16,282 -15.74 7,273 -35.89 0.1239
2018-11-13 2018-09-30 13F PACKAGING CORP AMER COM 695156109 103,426 97,723 1,713.54 11,345 1,680.85 0.1945
2018-07-18 2018-06-30 13F PACKAGING CORP AMER COM 695156109 5,703 0 0.00 638 -0.78 0.0122
2018-05-01 2018-03-31 13F PACKAGING CORP AMER COM 695156109 5,703 -5,156 -47.48 643 -50.95 0.0128
2018-01-18 2017-12-31 13F PACKAGING CORP AMER COM 695156109 10,859 0 0.00 1,309 5.14 0.0297
2017-10-30 2017-09-30 13F PACKAGING CORP AMER COM 695156109 10,859 -423 -3.75 1,245 -0.88 0.0274
2017-08-09 2017-06-30 13F PACKAGING CORP AMER COM 695156109 11,282 0 0.00 1,257 21.59 0.0277
2017-05-18 2017-03-31 13F/A-1 PACKAGING CORP AMER COM 695156109 11,282 5,408 92.07 1,034 99.42 0.0083
2017-05-11 2017-03-31 13F PACKAGING CORP AMER COM 695156109 3,450 208
2017-02-09 2016-12-31 13F PACKAGING CORP AMER COM 695156109 5,874 0 0.00 519 8.60 0.0049
2016-11-10 2016-09-30 13F PACKAGING CORP AMER COM 695156109 5,874 1,304 28.53 477 56.39 0.0052
2016-08-10 2016-06-30 13F PACKAGING CORP AMER COM 695156109 4,570 1,120 32.46 306 46.63 0.0033
2016-05-13 2016-03-31 13F PACKAGING CORP AMER COM 695156109 3,450 179 5.47 208 0.97 0.0023
2016-02-11 2015-12-31 13F PACKAGING CORP AMER COM 695156109 3,271 -86 -2.56 206 2.49 0.0023
2015-11-16 2015-09-30 13F/A-1 PACKAGING CORP AMER COM 695156109 3,357 2,741 444.97 202 428.95 0.0022
2015-11-12 2015-09-30 13F PACKAGING CORP AMER COM 695156109 3,357 202
2015-08-12 2015-06-30 13F PACKAGING CORP AMER COM 695156109 616 616 -70.10 38 -62.00 0.0004
2013-11-12 2013-09-30 13F PACKAGING CORP AMER COM 695156109 0 -2,060 -100.00 0 -100.00
2013-08-14 2013-06-30 13F PACKAGING CORP AMER COM 695156109 2,060 2,060 101 0.0015
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.