Ross Stores, Inc.
MX ˙ BMV ˙ US7782961038
SecurityMX:ROST / Ross Stores, Inc.
InstitutionMasterton Capital Management, LP
Latest Disclosed Ownership9,232 shares
Latest Disclosed Value $ 1,999,928
Masterton Capital Management, LP reports 63.92% increase in ownership of ROST / Ross Stores, Inc.

On May 15, 2026 - Masterton Capital Management, LP filed a 13F-HR form disclosing ownership of 9,232 shares of Ross Stores, Inc. (MX:ROST) valued at $1,999,928 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 5,632 shares of Ross Stores, Inc.. This represents a change in shares of 63.92% 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)
2026-05-15 2026-03-31 13F ROSS STORES COM 778296103 9,232 3,600 63.92 2,000 97.14 1.8212
2026-02-17 2025-12-31 13F ROSS STORES COM 778296103 5,632 -22,100 -79.69 1,015 -76.01 0.7072
2025-11-14 2025-09-30 13F ROSS STORES COM 778296103 27,732 -21,168 -43.29 4,226 54.18 2.3168
2025-08-14 2025-06-30 13F TERRENO RLTY COM 778296103 48,900 -42,184 -46.31 2,742 -76.45 1.6572
2025-05-15 2025-03-31 13F ROSS STORES COM 778296103 91,084 34,600 61.26 11,640 36.22 7.9439
2025-02-14 2024-12-31 13F ROSS STORES COM 778296103 56,484 26,884 90.82 8,544 91.78 4.8414
2024-11-14 2024-09-30 13F ROSS STORES COM 778296103 29,600 -19,300 -39.47 4,455 -37.31 2.9697
2024-08-14 2024-06-30 13F ROSS STORES COM 778296103 48,900 48,900 7,106 5.0739
2023-08-14 2023-06-30 13F ROSS STORES COM 778296103 0 -13,700 -100.00 0 -100.00
2023-05-15 2023-03-31 13F ROSS STORES COM 778296103 13,700 13,700 1,454 1.3884
2023-02-14 2022-12-31 13F ROSS STORES COM 778296103 0 -23,800 -100.00 0 -100.00
2022-11-14 2022-09-30 13F ROSS STORES COM 778296103 23,800 -7,400 -23.72 2,006 -8.44 1.8201
2022-08-15 2022-06-30 13F ROSS STORES COM 778296103 31,200 -23,200 -42.65 2,191 -55.48 2.6316
2022-05-16 2022-03-31 13F ROSS STORES COM 778296103 54,400 -5,400 -9.03 4,921 -27.99 4.6349
2022-02-14 2021-12-31 13F ROSS STORES COM 778296103 59,800 -61,064 -50.52 6,834 -48.05 4.9927
2021-11-15 2021-09-30 13F ROSS STORES COM 778296103 120,864 -6,700 -5.25 13,156 -16.83 8.2607
2021-08-16 2021-06-30 13F ROSS STORES COM 778296103 127,564 20,564 19.22 15,818 23.29 10.2137
2021-05-17 2021-03-31 13F ROSS STORES COM 778296103 107,000 46,700 77.45 12,830 73.26 9.3062
2021-02-16 2020-12-31 13F ROSS STORES COM 778296103 60,300 60,300 7,405 5.8911
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.