Ross Stores, Inc.
MX ˙ BMV ˙ US7782961038
SecurityMX:ROST / Ross Stores, Inc.
InstitutionSummitry Llc
Latest Disclosed Ownership184,299 shares
Latest Disclosed Value $ 39,924,621
Summitry Llc reports 57.55% decrease in ownership of ROST / Ross Stores, Inc.

On May 22, 2026 - Summitry Llc filed a 13F-HR/A form disclosing ownership of 184,299 shares of Ross Stores, Inc. (MX:ROST) valued at $39,924,621 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 9, 2026 disclosing 434,127 shares of Ross Stores, Inc.. This represents a change in shares of -57.55% 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.

Upgrade to unlock premium data and export to Excel .

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)
2026-05-22 2026-03-31 13F/A-1 ROSS STORES COM 778296103 184,299 -249,828 -57.55 39,925 -48.95 1.4085
2026-05-11 2026-03-31 13F ROSS STORES COM 778296103 184,292 -249,835 39,923 1.7433
2026-02-09 2025-12-31 13F ROSS STORES COM 778296103 434,127 -513 -0.12 78,204 18.07 3.2586
2025-11-07 2025-09-30 13F ROSS STORES COM 778296103 434,640 5,728 1.34 66,235 21.04 2.7983
2025-08-08 2025-06-30 13F ROSS STORES COM 778296103 428,912 4,718 1.11 54,721 0.95 2.4775
2025-05-13 2025-03-31 13F ROSS STORES COM 778296103 424,194 71,315 20.21 54,208 1.55 2.7398
2025-02-12 2024-12-31 13F ROSS STORES COM 778296103 352,879 6,871 1.99 53,380 2.50 2.6151
2024-11-07 2024-09-30 13F ROSS STORES COM 778296103 346,008 2,099 0.61 52,078 4.20 2.4870
2024-08-09 2024-06-30 13F ROSS STORES COM 778296103 343,909 5,604 1.66 49,977 0.66 2.5815
2024-05-06 2024-03-31 13F ROSS STORES COM 778296103 338,305 5,645 1.70 49,650 7.85 2.6040
2024-02-07 2023-12-31 13F ROSS STORES COM 778296103 332,660 -2,050 -0.61 46,037 21.77 2.6718
2023-11-06 2023-09-30 13F ROSS STORES COM 778296103 334,710 4,903 1.49 37,805 2.23 2.4856
2023-08-08 2023-06-30 13F ROSS STORES COM 778296103 329,807 3,673 1.13 36,981 6.84 2.3360
2023-05-12 2023-03-31 13F ROSS STORES COM 778296103 326,134 -134,391 -29.18 34,613 -35.25 2.3250
2023-02-10 2022-12-31 13F ROSS STORES COM 778296103 460,525 -164,701 -26.34 53,453 1.45 3.9310
2022-11-09 2022-09-30 13F ROSS STORES COM 778296103 625,226 -7,477 -1.18 52,688 18.57 3.9773
2022-08-09 2022-06-30 13F ROSS STORES COM 778296103 632,703 -14,255 -2.20 44,435 -24.07 3.2462
2022-05-09 2022-03-31 13F ROSS STORES COM 778296103 646,958 277,550 75.13 58,524 38.63 3.4710
2022-02-10 2021-12-31 13F ROSS STORES COM 778296103 369,408 9,777 2.72 42,216 7.84 2.4658
2021-11-12 2021-09-30 13F ROSS STORES COM 778296103 359,631 150,212 71.73 39,146 50.75 2.4469
2021-08-13 2021-06-30 13F ROSS STORES COM 778296103 209,419 2,046 0.99 25,968 4.43 1.6096
2021-05-12 2021-03-31 13F ROSS STORES COM 778296103 207,373 3,847 1.89 24,866 -0.52 1.5990
2021-02-05 2020-12-31 13F ROSS STORES COM 778296103 203,526 1,295 0.64 24,995 32.44 1.8296
2020-11-12 2020-09-30 13F ROSS STORES COM 778296103 202,231 2,545 1.27 18,872 10.87 1.5191
2020-08-07 2020-06-30 13F ROSS STORES COM 778296103 199,686 -63,275 -24.06 17,021 -25.57 1.4091
2020-05-08 2020-03-31 13F ROSS STORES COM 778296103 262,961 262,961 22,870 2.0959
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.