Packaging Corporation of America
US ˙ NYSE ˙ US6951561090

SecurityPKG / Packaging Corporation of America
InstitutionRhumbline Advisers
Latest Disclosed Ownership185,730 shares
Latest Disclosed Value $ 39,415,549
Rhumbline Advisers reports 1.56% decrease in ownership of PKG / Packaging Corporation of America

On May 12, 2026 - Rhumbline Advisers filed a 13F-HR form disclosing ownership of 185,730 shares of Packaging Corporation of America (US:PKG) valued at $39,415,621 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 188,678 shares of Packaging Corporation of America. This represents a change in shares of -1.56% during the quarter. The current value of the position is $41,675,955 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)
2026-05-12 2026-03-31 13F PACKAGING CORP AMER COM ISIN US COM 695156109 185,730 -2,948 -1.56 39,416 1.30 0.0337
2026-02-13 2025-12-31 13F PACKAGING CORP AMER COM ISIN US COM 695156109 188,678 -152 -0.08 38,911 -5.45 0.0315
2025-11-06 2025-09-30 13F PACKAGING CORP AMER COM ISIN US COM 695156109 188,830 -3,534 -1.84 41,152 13.52 0.0331
2025-08-12 2025-06-30 13F PACKAGING CORP AMER COM ISIN US COM 695156109 192,364 899 0.47 36,251 -4.39 0.0310
2025-05-29 2025-03-31 13F/A-1 PACKAGING CORP AMER COM ISIN US COM 695156109 191,465 1,381 0.73 37,914 -11.40 0.0355
2025-04-08 2025-03-31 13F PACKAGING CORP AMER COM ISIN US COM 695156109 191,465 1,381 37,914 0.0355
2025-05-29 2024-12-31 13F/A-1 PACKAGING CORP AMER COM ISIN US COM 695156109 190,084 -1,606 -0.84 42,794 3.64 0.0383
2025-01-30 2024-12-31 13F PACKAGING CORP AMER COM ISIN US COM 695156109 190,084 -1,606 42,794 0.0383
2024-11-12 2024-09-30 13F PACKAGING CORP AMER COM ISIN US COM 695156109 191,690 -4,016 -2.05 41,290 15.57 0.0372
2024-08-01 2024-06-30 13F PACKAGING CORP AMER COM ISIN US COM 695156109 195,706 -11,679 -5.63 35,728 -9.22 0.0336
2024-05-09 2024-03-31 13F PACKAGING CORP AMER COM ISIN US COM 695156109 207,385 -12,283 -5.59 39,357 9.98 0.0378
2024-02-08 2023-12-31 13F PACKAGING CORP AMER COM ISIN US COM 695156109 219,668 -3,097 -1.39 35,786 4.62 0.0375
2023-11-09 2023-09-30 13F PACKAGING CORP AMER COM ISIN US COM 695156109 222,765 -6,487 -2.83 34,205 12.90 0.0397
2023-08-08 2023-06-30 13F PACKAGING CORP AMER COM ISIN US COM 695156109 229,252 -1,309 -0.57 30,298 94,578.13 0.0339
2023-05-11 2023-03-31 13F PACKAGING CORP AMER COM ISIN COM 695156109 230,561 -4,812 -2.04 32 -99.89 0.0395
2023-02-14 2022-12-31 13F PACKAGING CORP AMER COM ISIN COM 695156109 235,373 10,406 4.63 30,107 19.18 0.0405
2022-11-10 2022-09-30 13F PACKAGING CORP AMER COM ISIN COM 695156109 224,967 24,099 12.00 25,262 -8.53 0.0376
2022-08-11 2022-06-30 13F PACKAGING CORP AMER COM ISIN COM 695156109 200,868 16,922 9.20 27,619 -3.82 0.0403
2022-05-12 2022-03-31 13F PACKAGING CORP AMER COM ISIN COM 695156109 183,946 -10,923 -5.61 28,716 8.24 0.0370
2022-02-10 2021-12-31 13F PACKAGING CORP AMER COM ISIN COM 695156109 194,869 4,516 2.37 26,531 1.41 0.0325
2021-11-12 2021-09-30 13F PACKAGING CORP AMER COM ISIN COM 695156109 190,353 1,101 0.58 26,162 2.08 0.0354
2021-08-05 2021-06-30 13F PACKAGING CORP AMER COM ISIN COM 695156109 189,252 -6,920 -3.53 25,629 -2.85 0.0336
2021-05-06 2021-03-31 13F PACKAGING CORP AMER COM ISIN COM 695156109 196,172 -21,280 -9.79 26,381 -12.03 0.0358
2021-02-10 2020-12-31 13F PACKAGING CORP AMER COM ISIN COM 695156109 217,452 -17,340 -7.39 29,989 17.13 0.0414
2020-11-12 2020-09-30 13F PACKAGING CORP AMER COM ISIN COM 695156109 234,792 -11,339 -4.61 25,604 4.23 0.0401
2020-08-13 2020-06-30 13F PACKAGING CORP AMER COM ISIN COM 695156109 246,131 2,336 0.96 24,564 16.04 0.0410
2020-05-06 2020-03-31 13F PACKAGING CORP AMER COM ISIN COM 695156109 243,795 28,469 13.22 21,169 -12.21 0.0444
2020-02-05 2019-12-31 13F PACKAGING CORP AMER COM ISIN COM 695156109 215,326 3,436 1.62 24,114 7.26 0.0403
2019-10-23 2019-09-30 13F PACKAGING CORP AMER COM ISIN COM 695156109 211,890 13,990 7.07 22,482 19.18 0.0411
2019-08-14 2019-06-30 13F PACKAGING CORP AMER COM ISIN COM 695156109 197,900 1,364 0.69 18,864 -3.42 0.0354
2019-05-01 2019-03-31 13F PACKAGING CORP AMER COM ISIN COM 695156109 196,536 -146 -0.07 19,532 18.99 0.0378
2019-01-31 2018-12-31 13F PACKAGING CORP AMER COM ISIN COM 695156109 196,682 -9,396 -4.56 16,415 -27.38 0.0357
2018-11-07 2018-09-30 13F PACKAGING CORP AMER COM ISIN COM 695156109 206,078 -2,119 -1.02 22,605 -2.87 0.0437
2018-08-06 2018-06-30 13F PACKAGING CORP AMER COM ISIN COM 695156109 208,197 6,592 3.27 23,274 2.43 0.0469
2018-05-02 2018-03-31 13F PACKAGING CORP AMER COM ISIN COM 695156109 201,605 -3,910 -1.90 22,721 -8.29 0.0475
2018-02-09 2017-12-31 13F PACKAGING CORP AMER COM ISIN COM 695156109 205,515 815 0.40 24,775 5.54 0.0503
2017-11-06 2017-09-30 13F PACKAGING CORP AMER COM ISIN COM 695156109 204,700 -15,702 -7.12 23,475 -4.38 0.0510
2017-08-02 2017-06-30 13F PACKAGING CORP AMER COM ISIN COM 695156109 220,402 -6,017 -2.66 24,551 18.35 0.0560
2017-05-02 2017-03-31 13F PACKAGING CORP AMER COM ISIN COM 695156109 226,419 -15,072 -6.24 20,745 1.28 0.0485
2017-01-27 2016-12-31 13F PACKAGING CORP AMER COM ISIN COM 695156109 241,491 10,552 4.57 20,483 9.15 0.0519
2016-11-08 2016-09-30 13F PACKAGING CORP AMER COM ISIN COM 695156109 230,939 47,516 25.91 18,766 52.85 0.0517
2016-08-11 2016-06-30 13F PACKAGING CORP AMER COM ISIN COM 695156109 183,423 2,210 1.22 12,277 12.17 0.0364
2016-05-02 2016-03-31 13F PACKAGING CORP OF AMERICA COMM COM 695156109 181,213 -770 -0.42 10,945 -4.61 0.0340
2016-02-03 2015-12-31 13F PACKAGING CORP OF AMERICA COMM COM 695156109 181,983 691 0.38 11,474 5.20 0.0369
2015-11-04 2015-09-30 13F PACKAGING CORP OF AMERICA COMM COM 695156109 181,292 6,317 3.61 10,907 -0.25 0.0371
2015-08-04 2015-06-30 13F PACKAGING CORP OF AMERICA COMM COM 695156109 174,975 24,221 16.07 10,934 -7.24 0.0348
2015-05-12 2015-03-31 13F PACKAGING CORP OF AMERICA COMM COM 695156109 150,754 13,453 9.80 11,787 9.99 0.0340
2015-02-06 2014-12-31 13F PACKAGING CORP OF AMERICA COMM COM 695156109 137,301 -4,290 -3.03 10,716 18.59 0.0311
2014-11-12 2014-09-30 13F PACKAGING CORP OF AMERICA COMM COM 695156109 141,591 537 0.38 9,036 -10.39 0.0271
2014-08-06 2014-06-30 13F PACKAGING CORP OF AMERICA COMM COM 695156109 141,054 -14,588 -9.37 10,084 -7.93 0.0296
2014-05-06 2014-03-31 13F PACKAGING CORP OF AMERICA COMM COM 695156109 155,642 -4,793 -2.99 10,953 7.89 0.0325
2014-02-03 2013-12-31 13F PACKAGING CORP OF AMERICA COMM COM 695156109 160,435 -15,723 -8.93 10,152 0.94 0.0299
2013-11-05 2013-09-30 13F PACKAGING CORP OF AMERICA COMM COM 695156109 176,158 -1,419 -0.80 10,057 15.68 0.0312
2013-08-07 2013-06-30 13F PACKAGING CORP OF AMERICA COMM COM 695156109 177,577 177,577 8,694 0.0279
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.