Ross Stores, Inc.
US ˙ NasdaqGS ˙ US7782961038

SecurityROST / Ross Stores, Inc.
InstitutionBoston Partners
Latest Disclosed Ownership1,312,736 shares
Latest Disclosed Value $ 284,390,676
Boston Partners reports 3.96% decrease in ownership of ROST / Ross Stores, Inc.

On May 11, 2026 - Boston Partners filed a 13F-HR form disclosing ownership of 1,312,736 shares of Ross Stores, Inc. (US:ROST) valued at $284,378,000 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 1,366,884 shares of Ross Stores, Inc.. This represents a change in shares of -3.96% during the quarter. The current value of the position is $305,368,648 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)
2026-05-11 2026-03-31 13F ROSS STORES COM 778296103 1,312,736 -54,148 -3.96 284,391 15.48 0.1273
2026-02-13 2025-12-31 13F ROSS STORES COM 778296103 1,366,884 -24,683 -1.77 246,277 16.14 0.2550
2025-11-13 2025-09-30 13F ROSS STORES COM 778296103 1,391,567 28,545 2.09 212,060 21.91 0.2177
2025-08-12 2025-06-30 13F/A-1 ROSS STORES COM 778296103 1,363,022 -225,543 -14.20 173,944 -14.33 0.1932
2025-08-07 2025-06-30 13F ROSS STORES COM 778296103 1,363,022 -225,543 173,944 0.0799
2025-05-13 2025-03-31 13F ROSS STORES COM 778296103 1,588,565 -35,730 -2.20 203,044 -17.36 0.2456
2025-02-11 2024-12-31 13F ROSS STORES COM 778296103 1,624,295 104,463 6.87 245,701 7.42 0.2989
2024-11-12 2024-09-30 13F ROSS STORES COM 778296103 1,519,832 -389,020 -20.38 228,739 -17.55 0.2700
2024-08-14 2024-06-30 13F ROSS STORES COM 778296103 1,908,852 -222,677 -10.45 277,423 -11.30 0.3446
2024-05-28 2024-03-31 13F/A-1 ROSS STORES COM 778296103 2,131,529 69,085 3.35 312,756 9.61 0.3725
2024-05-13 2024-03-31 13F ROSS STORES COM 778296103 2,131,529 69,085 312,756 0.1548
2024-02-07 2023-12-31 13F ROSS STORES COM 778296103 2,062,444 -460,237 -18.24 285,330 0.13 0.3779
2023-11-08 2023-09-30 13F ROSS STORES COM 778296103 2,522,681 5,133 0.20 284,956 0.94 0.3945
2023-08-10 2023-06-30 13F ROSS STORES COM 778296103 2,517,548 16,867 0.67 282,296 6.37 0.3800
2023-05-09 2023-03-31 13F ROSS STORES COM 778296103 2,500,681 15,307 0.62 265,395 -8.01 0.3649
2023-02-08 2022-12-31 13F ROSS STORES COM 778296103 2,485,374 40,746 1.67 288,496 40.00 0.3903
2022-11-09 2022-09-30 13F ROSS STORES COM 778296103 2,444,628 141,156 6.13 206,067 27.34 0.3016
2022-08-10 2022-06-30 13F ROSS STORES COM 778296103 2,303,472 32,885 1.45 161,830 -21.22 0.2262
2022-05-10 2022-03-31 13F ROSS STORES COM 778296103 2,270,587 715,141 45.98 205,423 15.58 0.2489
2022-02-04 2021-12-31 13F ROSS STORES COM 778296103 1,555,446 -11,881 -0.76 177,738 4.18 0.2141
2021-11-05 2021-09-30 13F ROSS STORES COM 778296103 1,567,327 43,262 2.84 170,600 -9.73 0.2161
2021-08-12 2021-06-30 13F ROSS STORES COM 778296103 1,524,065 28,631 1.91 188,984 5.37 0.2410
2021-05-10 2021-03-31 13F ROSS STORES COM 778296103 1,495,434 337,021 29.09 179,356 26.07 0.2405
2021-02-10 2020-12-31 13F/A-1 ROSS STORES COM 778296103 1,158,413 218,740 23.28 142,265 62.23 0.2213
2021-02-04 2020-12-31 13F ROSS STORES COM 778296103 1,158,413 218,740 142,265 85,350.5440
2020-11-13 2020-09-30 13F/A-1 ROSS STORES COM 778296103 939,673 206,088 28.09 87,691 40.22 0.1597
2020-11-09 2020-09-30 13F ROSS STORES COM 778296103 733,585 0 62,540 45,911.8099
2020-08-12 2020-06-30 13F ROSS STORES COM 778296103 733,585 -20,034 -2.66 62,540 -4.56 0.1149
2020-05-13 2020-03-31 13F ROSS STORES COM 778296103 753,619 -225,279 -23.01 65,526 -42.50 0.1301
2020-02-06 2019-12-31 13F/A-1 ROSS STORES COM 778296103 978,898 39,565 4.21 113,965 10.44 0.1507
2020-02-05 2019-12-31 13F ROSS STORES COM 778296103 978,898 39,565 113,965 64,074.4516
2019-11-20 2019-09-30 13F/A-1 ROSS STORES COM 778296103 939,333 -143,720 -13.27 103,190 -3.91 0.1397
2019-11-08 2019-09-30 13F ROSS STORES COM 778296103 1,081,951 -1,102 107,283 0.1419
2019-08-26 2019-06-30 13F/A-1 ROSS STORES COM 778296103 1,083,053 87,548 8.79 107,385 15.86 0.1408
2019-08-09 2019-06-30 13F ROSS STORES COM 778296103 1,083,097 87,592 107,389
2019-05-13 2019-03-31 13F/A-1 ROSS STORES COM 778296103 995,505 24,824 2.56 92,682 14.76 0.1228
2019-05-03 2019-03-31 13F ROSS STORES COM 778296103 995,505 24,824 92,682
2019-02-07 2018-12-31 13F ROSS STORES COM 778296103 970,681 970,681 80,761 0.1160
2018-02-14 2017-12-31 13F/A-1 ROSS STORES COM 778296103 0 -54,430 -100.00 0 -100.00
2017-11-02 2017-09-30 13F ROSS STORES COM 778296103 54,430 54,430 3,515 0.0043
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.