Smurfit Westrock Plc
US ˙ NYSE ˙ IE00B1RR8406

SecuritySW / Smurfit Westrock Plc
InstitutionOMERS ADMINISTRATION Corp
Latest Disclosed Ownership16,582 shares
Latest Disclosed Value $ 660,793
OMERS ADMINISTRATION Corp reports 52.59% increase in ownership of SW / Smurfit Westrock Plc

On May 15, 2026 - OMERS ADMINISTRATION Corp filed a 13F-HR form disclosing ownership of 16,582 shares of Smurfit Westrock Plc (US:SW) valued at $660,793 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 10,867 shares of Smurfit Westrock Plc. This represents a change in shares of 52.59% during the quarter. The current value of the position is $698,434 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)
2026-05-15 2026-03-31 13F SMURFIT WESTROCK SHS G8267P108 16,582 5,715 52.59 661 57.14 0.0042
2026-02-13 2025-12-31 13F SMURFIT WESTROCK SHS G8267P108 10,867 -14,200 -56.65 420 -60.64 0.0030
2025-11-14 2025-09-30 13F SMURFIT WESTROCK SHS G8267P108 25,067 14,200 130.67 1,067 127.99 0.0076
2025-08-13 2025-06-30 13F SMURFIT WESTROCK SHS G8267P108 10,867 -65,600 -85.79 469 -86.42 0.0037
2025-05-14 2025-03-31 13F SMURFIT WESTROCK SHS G8267P108 76,467 44,513 139.30 3,446 100.17 0.0301
2025-02-14 2024-12-31 13F SMURFIT WESTROCK SHS G8267P108 31,954 23,031 258.11 1,721 291.14 0.0151
2024-11-13 2024-09-30 13F SMURFIT WESTROCK SHS G8267P108 8,923 8,923 441 0.0041
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.