Portillo's Inc.
US ˙ NasdaqGS ˙ US73642K1060

SecurityPTLO / Portillo's Inc.
InstitutionState Street Corp
Latest Disclosed Ownership1,287,546 shares
Latest Disclosed Value $ 6,811,118
State Street Corp reports 7.52% increase in ownership of PTLO / Portillo's Inc.

On May 15, 2026 - State Street Corp filed a 13F-HR form disclosing ownership of 1,287,546 shares of Portillo's Inc. (US:PTLO) valued at $6,811,118 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 1,197,514 shares of Portillo's Inc.. This represents a change in shares of 7.52% during the quarter. The current value of the position is $4,905,550 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 PORTILLOS COM CL A 73642K106 1,287,546 90,032 7.52 6,811 25.29 0.0002
2026-02-13 2025-12-31 13F PORTILLOS COM CL A 73642K106 1,197,514 -51,932 -4.16 5,437 -32.54 0.0002
2025-11-14 2025-09-30 13F PORTILLOS COM CL A 73642K106 1,249,446 15,578 1.26 8,059 -44.04 0.0003
2025-08-14 2025-06-30 13F PORTILLOS COM CL A 73642K106 1,233,868 28,839 2.39 14,399 0.50 0.0005
2025-05-15 2025-03-31 13F PORTILLOS COM CL A 73642K106 1,205,029 60,174 5.26 14,328 33.14 0.0006
2025-02-14 2024-12-31 13F PORTILLOS COM CL A 73642K106 1,144,855 59,069 5.44 10,762 -26.42 0.0004
2024-11-14 2024-09-30 13F PORTILLOS COM CL A 73642K106 1,085,786 17,306 1.62 14,626 40.83 0.0006
2024-08-14 2024-06-30 13F PORTILLOS COM CL A 73642K106 1,068,480 111,229 11.62 10,386 -23.49 0.0005
2024-05-15 2024-03-31 13F PORTILLOS COM CL A 73642K106 957,251 9,181 0.97 13,574 -10.12 0.0006
2024-02-14 2023-12-31 13F PORTILLOS COM CL A 73642K106 948,070 103,325 12.23 15,103 16.17 0.0007
2023-11-14 2023-09-30 13F PORTILLOS COM CL A 73642K106 844,745 71,098 9.19 13,001 -25.42 0.0007
2023-08-14 2023-06-30 13F PORTILLOS COM CL A 73642K106 773,647 131,848 20.54 17,430 27.09 0.0009
2023-05-15 2023-03-31 13F PORTILLOS COM CL A 73642K106 641,799 164,428 34.44 13,715 76.06 0.0008
2023-05-15 2022-12-31 13F/A-99 PORTILLOS COM CL A 73642K106 477,371 48,782 11.38 7,791 -7.69 0.0005
2023-05-15 2022-12-31 13F PORTILLOS COM CL A 73642K106 477,371 48,782 7,791 0.0005
2022-11-15 2022-09-30 13F PORTILLOS COM CL A 73642K106 428,589 38,816 9.96 8,439 32.42 0.0005
2022-08-15 2022-06-30 13F PORTILLOS COM CL A 73642K106 389,773 -9,702 -2.43 6,373 -35.04 0.0004
2022-05-16 2022-03-31 13F PORTILLOS COM CL A 73642K106 399,475 24,222 6.45 9,811 -30.35 0.0005
2022-02-14 2021-12-31 13F PORTILLOS COM CL A 73642K106 375,253 375,253 14,087 0.0007
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.