미국 포장 공사
MX ˙ BMV ˙ US6951561090
SecurityMX:PKG / Packaging Corporation of America
InstitutionGuyasuta Investment Advisors Inc
Latest Disclosed Ownership26,208 shares
Latest Disclosed Value $ 5,561,862
Guyasuta Investment Advisors Inc reports 4.75% decrease in ownership of PKG / Packaging Corporation of America

On April 17, 2026 - Guyasuta Investment Advisors Inc filed a 13F-HR form disclosing ownership of 26,208 shares of Packaging Corporation of America (MX:PKG) valued at $5,561,862 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 23, 2026 disclosing 27,515 shares of Packaging Corporation of America. This represents a change in shares of -4.75% 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)
2026-04-17 2026-03-31 13F PACKAGING CORP AMER COM 695156109 26,208 -1,307 -4.75 5,562 -1.99 0.3215
2026-01-23 2025-12-31 13F PACKAGING CORP AMER COM 695156109 27,515 -1,660 -5.69 5,674 -10.76 0.3236
2025-10-21 2025-09-30 13F PACKAGING CORP AMER COM 695156109 29,175 -307 -1.04 6,358 14.46 0.3656
2025-07-17 2025-06-30 13F PACKAGING CORP AMER COM 695156109 29,482 0 0.00 5,556 -4.85 0.3403
2025-04-22 2025-03-31 13F PACKAGING CORP AMER COM 695156109 29,482 -675 -2.24 5,838 -14.01 0.3817
2025-01-30 2024-12-31 13F PACKAGING CORP AMER COM 695156109 30,157 -200 -0.66 6,789 3.84 0.4269
2024-11-13 2024-09-30 13F PACKAGING CORP AMER COM 695156109 30,357 -1,345 -4.24 6,539 26.61 0.4034
2024-07-22 2024-06-30 13F PACKAGING CORP AMER COM 695156109 31,702 -350 -1.09 5,165 -1.09 0.3798
2024-04-16 2024-03-31 13F PACKAGING CORP AMER COM 695156109 32,052 -150 -0.47 5,222 -0.48 0.3786
2024-02-05 2023-12-31 13F PACKAGING CORP AMER COM 695156109 32,202 -225 -0.69 5,246 5.36 0.3792
2023-10-25 2023-09-30 13F PACKAGING CORP AMER COM 695156109 32,427 -500 -1.52 4,979 14.43 0.3857
2023-07-17 2023-06-30 13F PACKAGING CORP AMER COM 695156109 32,927 -3,282 -9.06 4,352 -13.43 0.3218
2023-04-28 2023-03-31 13F PACKAGING CORP AMER COM 695156109 36,209 -16,557 -31.38 5,027 -25.53 0.3884
2023-01-30 2022-12-31 13F PACKAGING CORP AMER COM 695156109 52,766 -233 -0.44 6,749 13.41 0.5328
2022-10-25 2022-09-30 13F PACKAGING CORP AMER COM 695156109 52,999 -212 -0.40 5,951 -18.67 0.5144
2022-07-21 2022-06-30 13F PACKAGING CORP AMER COM 695156109 53,211 0 0.00 7,317 -11.92 0.5723
2022-05-03 2022-03-31 13F PACKAGING CORP AMER COM 695156109 53,211 -235 -0.44 8,307 14.15 0.5704
2022-02-08 2021-12-31 13F PACKAGING CORP AMER COM 695156109 53,446 -325 -0.60 7,277 -1.53 0.4767
2021-11-09 2021-09-30 13F PACKAGING CORP AMER COM 695156109 53,771 -941 -1.72 7,390 -0.26 0.5268
2021-08-12 2021-06-30 13F PACKAGING CORP AMER COM 695156109 54,712 0 0.00 7,409 0.69 0.5327
2021-05-11 2021-03-31 13F PACKAGING CORP AMER COM 695156109 54,712 1,502 2.82 7,358 0.27 0.5746
2021-02-08 2020-12-31 13F PACKAGING CORP AMER COM 695156109 53,210 -535 -1.00 7,338 25.20 0.6130
2020-10-28 2020-09-30 13F PACKAGING CORP AMER COM 695156109 53,745 -250 -0.46 5,861 8.76 0.5442
2020-08-06 2020-06-30 13F PACKAGING CORP AMER COM 695156109 53,995 -768 -1.40 5,389 13.33 0.5527
2020-04-28 2020-03-31 13F PACKAGING CORP AMER COM 695156109 54,763 -300 -0.54 4,755 -22.88 0.5698
2020-02-10 2019-12-31 13F PACKAGING CORP AMER COM 695156109 55,063 1,080 2.00 6,166 7.65 0.5987
2019-11-08 2019-09-30 13F PACKAGING CORP AMER COM 695156109 53,983 -2,240 -3.98 5,728 6.89 0.5922
2019-08-06 2019-06-30 13F PACKAGING CORP AMER COM 695156109 56,223 -140 -0.25 5,359 -4.32 0.5568
2019-05-10 2019-03-31 13F PACKAGING CORP AMER COM 695156109 56,363 -3,285 -5.51 5,601 12.52 0.6237
2019-02-11 2018-12-31 13F PACKAGING CORP AMER COM 695156109 59,648 -67,209 -52.98 4,978 -64.23 0.6140
2018-11-08 2018-09-30 13F PACKAGING CORP AMER COM 695156109 126,857 -1,458 -1.14 13,915 -2.99 1.4823
2018-08-07 2018-06-30 13F PACKAGING CORP AMER COM 695156109 128,315 120 0.09 14,344 -0.72 1.6438
2018-05-09 2018-03-31 13F PACKAGING CORP AMER COM 695156109 128,195 -30,435 -19.19 14,448 -24.45 1.6917
2018-02-12 2017-12-31 13F PACKAGING CORP AMER COM 695156109 158,630 -24,865 -13.55 19,123 -9.12 2.1668
2017-11-09 2017-09-30 13F PACKAGING CORP AMER COM 695156109 183,495 -5,785 -3.06 21,043 -0.19 2.5398
2017-08-09 2017-06-30 13F PACKAGING CORP AMER COM 695156109 189,280 -2,389 -1.25 21,084 20.06 2.5356
2017-05-09 2017-03-31 13F PACKAGING CORP AMER COM 695156109 191,669 -9,650 -4.79 17,561 2.84 2.1185
2017-02-07 2016-12-31 13F PACKAGING CORP AMER COM 695156109 201,319 -1,318 -0.65 17,076 3.70 2.2067
2016-11-03 2016-09-30 13F PACKAGING CORP AMER COM 695156109 202,637 -8,037 -3.81 16,466 16.78 2.1006
2016-08-12 2016-06-30 13F PACKAGING CORP OF AMERICA COM 695156109 210,674 -2,891 -1.35 14,100 9.31 1.8871
2016-05-12 2016-03-31 13F PACKAGING CORP OF AMERICA COM 695156109 213,565 13,666 6.84 12,899 2.35 1.7946
2016-02-05 2015-12-31 13F PACKAGING CORP OF AMERICA COM 695156109 199,899 -5,854 -2.85 12,603 1.82 1.7717
2015-11-06 2015-09-30 13F PACKAGING CORP OF AMERICA COM 695156109 205,753 785 0.38 12,378 -3.36 1.8019
2015-08-04 2015-06-30 13F PACKAGING CORP OF AMERICA COM 695156109 204,968 204,968 12,808 1.6980
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.