Packaging Corporation of America
MX ˙ BMV ˙ US6951561090
SecurityMX:PKG / Packaging Corporation of America
InstitutionToroso Investments, LLC
Latest Disclosed Ownership428,577 shares
Latest Disclosed Value $ 90,952,611
Toroso Investments, LLC ownership in PKG / Packaging Corporation of America

On May 15, 2026 - Toroso Investments, LLC filed a 13F-HR form disclosing ownership of 428,577 shares of Packaging Corporation of America (MX:PKG) valued at $90,952,611 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 6,722 shares of Packaging Corporation of America. This represents a change in shares of 6,275.74% during the quarter.

Toroso Investments, LLC has a history of taking positions in derivatives of the underlying security (PKG) in the form of stock options. The firm currently holds call options representing 4,900 of underlying shares valued at $1,039,878 USD .

Note: prior versions of this page mistakenly stated that the share values represented the number of options, not the number of underlying shares. For more information on the data backing these reports, please see the SEC document Frequently Asked Questions About Form 13F.

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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Institutional Put/Call Ratios
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In addition to reporting standard equity and debt issues, institutions with more than 100MM assets under management must also disclose their put and call option holdings. Since put options generally indicate negative sentiment, and call options indicate positive sentiment, we can get a sense of the overall institutional sentiment by plotting the ratio of puts to calls. The chart to the right plots the historical put/call ratio for this instrument.

Using Put/Call Ratio as an indicator of investor sentiment overcomes one of the key deficiencies of using total institutional ownership, which is that a significant amount of assets under management are invested passively to track indices. Passively-managed funds do not typically buy options, so the put/call ratio indicator more closely tracks the sentiment of actively-managed funds.

MX:PKG / Packaging Corporation of America Historical Put/Call Ratio
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)
2026-05-15 2026-03-31 13F PACKAGING CORP AMER COM 695156109 428,577 421,855 6,275.74 90,953 6,462.19 0.1918
2026-02-13 2025-12-31 13F PACKAGING CORP AMER COM 695156109 6,722 -825 -10.93 1,386 -15.69 0.0033
2025-11-14 2025-09-30 13F PACKAGING CORP AMER COM 695156109 7,547 -1,013 -11.83 1,645 1.92 0.0033
2025-08-14 2025-06-30 13F PACKAGING CORP AMER COM 695156109 8,560 1,962 29.74 1,613 23.51 0.0097
2025-05-14 2025-03-31 13F PACKAGING CORP AMER COM 695156109 6,598 856 14.91 1,307 1.08 0.0106
2025-02-14 2024-12-31 13F PACKAGING CORP AMER COM 695156109 5,742 -4,648 -44.74 1,293 -42.27 0.0102
2024-11-25 2024-09-30 13F/A-1 PACKAGING CORP AMER COM 695156109 10,390 -4,908 -32.08 2,238 -19.84 0.0237
2024-11-14 2024-09-30 13F PACKAGING CORP AMER COM 695156109 10,390 -4,908 2,238 0.0153
2024-08-14 2024-06-30 13F PACKAGING CORP AMER COM 695156109 15,298 -5,987 -28.13 2,793 -30.87 0.0375
2024-05-16 2024-03-31 13F PACKAGING CORP AMER COM 695156109 21,285 3,507 19.73 4,039 39.47 0.0667
2024-02-15 2023-12-31 13F PACKAGING CORP AMER COM 695156109 17,778 -4,205 -19.13 2,896 -14.19 0.0674
2023-11-15 2023-09-30 13F PACKAGING CORP AMER COM 695156109 21,983 580 2.71 3,375 168,650.00 0.1027
2023-08-14 2023-06-30 13F PACKAGING CORP AMER COM 695156109 21,403 -4,326 -16.81 3 -33.33 0.0832
2023-05-23 2023-03-31 13F/A-1 PACKAGING CORP AMER COM 695156109 25,729 2,041 8.62 4 -99.90 0.1176
2023-05-15 2023-03-31 13F PACKAGING CORP AMER COM 695156109 25,729 2,041 4 0.1268
2023-02-15 2022-12-31 13F PACKAGING CORP AMER COM 695156109 23,688 7,221 43.85 3,030 63.87 0.1164
2022-11-23 2022-09-30 13F PACKAGING CORP AMER COM 695156109 16,467 4,412 36.60 1,849 11.52 0.0768
2022-08-15 2022-06-30 13F PACKAGING CORP AMER COM 695156109 12,055 2,259 23.06 1,658 8.44 0.0607
2022-05-20 2022-03-31 13F PACKAGING CORP AMER COM 695156109 9,796 7,055 257.39 1,529 309.92 0.0456
2022-02-16 2021-12-31 13F PACKAGING CORP AMER COM 695156109 2,741 -135 -4.69 373 -5.57 0.0114
2021-11-15 2021-09-30 13F PACKAGING CORP AMER COM 695156109 2,876 379 15.18 395 16.86 0.0148
2021-08-13 2021-06-30 13F PACKAGING CORP AMER COM 695156109 2,497 304 13.86 338 14.58 0.0132
2021-05-17 2021-03-31 13F PACKAGING CORP AMER COM 695156109 2,193 598 37.49 295 34.09 0.0138
2021-02-16 2020-12-31 13F PACKAGING CORP AMER COM 695156109 1,595 1,595 220 0.0152
Disclosed Call Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share
Price
Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2026-05-15 2026-03-31 13F PACKAGING CORP AMER COM Call 4,900 1,040 n/a n/a n/a
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.