Ross Stores, Inc.
MX ˙ BMV ˙ US7782961038
SecurityMX:ROST / Ross Stores, Inc.
InstitutionRobeco Institutional Asset Management B.V.
Latest Disclosed Ownership535,794 shares
Latest Disclosed Value $ 116,069,055
Robeco Institutional Asset Management B.V. reports 391.81% increase in ownership of ROST / Ross Stores, Inc.

On April 21, 2026 - Robeco Institutional Asset Management B.V. filed a 13F-HR form disclosing ownership of 535,794 shares of Ross Stores, Inc. (MX:ROST) valued at $116,069,055 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 23, 2026 disclosing 108,944 shares of Ross Stores, Inc.. This represents a change in shares of 391.81% 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)
2026-04-21 2026-03-31 13F ROSS STORES COM 778296103 535,794 426,850 391.81 116,069 491.43 0.1654
2026-01-23 2025-12-31 13F ROSS STORES COM 778296103 108,944 85,980 374.41 19,625 460.87 0.0279
2025-10-22 2025-09-30 13F ROSS STORES COM 778296103 22,964 5,889 34.49 3,499 60.65 0.0051
2025-07-18 2025-06-30 13F ROSS STORES COM 778296103 17,075 -32,601 -65.63 2,178 -65.69 0.0035
2025-04-23 2025-03-31 13F ROSS STORES COM 778296103 49,676 -74,139 -59.88 6,348 -66.11 0.0123
2025-01-23 2024-12-31 13F ROSS STORES COM 778296103 123,815 -25,289 -16.96 18,729 -16.54 0.0355
2024-10-29 2024-09-30 13F ROSS STORES COM 778296103 149,104 17,184 13.03 22,442 17.06 0.0446
2024-07-23 2024-06-30 13F ROSS STORES COM 778296103 131,920 -8,914 -6.33 19,171 -7.25 0.0412
2024-04-24 2024-03-31 13F ROSS STORES COM 778296103 140,834 94,721 205.41 20,669 223.90 0.0449
2024-02-14 2023-12-31 13F/A-1 ROSS STORES COM 778296103 46,113 8,833 23.69 6,382 51.57 0.0155
2024-02-08 2023-12-31 13F ROSS STORES COM 778296103 22,186 -15,094 46 0.0086
2023-10-24 2023-09-30 13F ROSS STORES COM 778296103 37,280 9,271 33.10 4,211 34.08 0.0113
2023-07-24 2023-06-30 13F ROSS STORES COM 778296103 28,009 -42,218 -60.12 3,141 -57.87 0.0082
2023-05-04 2023-03-31 13F ROSS STORES COM 778296103 70,227 43,000 157.93 7,453 135.85 0.0203
2023-02-07 2022-12-31 13F ROSS STORES COM 778296103 27,227 3,827 16.35 3,160 60.24 0.0091
2022-12-01 2022-09-30 13F/A-1 ROSS STORES COM 778296103 23,400 -63,786 -73.16 1,972 -67.80 0.0064
2022-10-27 2022-09-30 13F ROSS STORES COM 778296103 23,400 -63,786 1,972 0.0063
2022-12-01 2022-06-30 13F/A-1 ROSS STORES COM 778296103 87,186 -817 -0.93 6,124 -23.08 0.0190
2022-07-27 2022-06-30 13F ROSS STORES COM 778296103 87,186 -817 6,124 0.0188
2022-12-01 2022-03-31 13F/A-1 ROSS STORES COM 778296103 88,003 -27,055 -23.51 7,962 -39.45 0.0188
2022-04-26 2022-03-31 13F ROSS STORES COM 778296103 88,003 -27,055 7,962 0.0185
2022-12-01 2021-12-31 13F/A-1 ROSS STORES COM 778296103 115,058 -12,348 -9.69 13,149 -5.20 0.0280
2022-01-31 2021-12-31 13F ROSS STORES COM 778296103 115,058 -12,348 13,149 0.0276
2022-12-01 2021-09-30 13F/A-1 ROSS STORES COM 778296103 127,406 4,138 3.36 13,870 -9.25 0.0308
2021-10-20 2021-09-30 13F ROSS STORES COM 778296103 127,406 4,138 13,870 0.0304
2022-12-01 2021-06-30 13F/A-1 ROSS STORES COM 778296103 123,268 95,597 345.48 15,283 360.61 0.0339
2021-07-28 2021-06-30 13F ROSS STORES COM 778296103 123,268 95,597 15,283 0.0334
2022-12-01 2021-03-31 13F/A-1 ROSS STORES COM 778296103 27,671 -4,943 -15.16 3,318 -17.15 0.0082
2021-04-23 2021-03-31 13F ROSS STORES COM 778296103 27,671 -4,943 3,318 0.0081
2022-12-01 2020-12-31 13F/A-1 ROSS STORES COM 778296103 32,614 4,521 16.09 4,005 52.75 0.0105
2021-01-28 2020-12-31 13F ROSS STORES COM 778296103 32,614 4,521 4,005 0.0104
2021-01-19 2020-09-30 13F/A-1 ROSS STORES COM 778296103 28,093 0 0.00 2,622 9.52 0.0081
2020-10-29 2020-09-30 13F ROSS STORES COM 778296103 28,093 0 2,622 8,097.5894
2021-01-19 2020-06-30 13F/A-1 ROSS STORES COM 778296103 28,093 -200,974 -87.74 2,394 -87.98 0.0081
2020-07-20 2020-06-30 13F ROSS STORES COM 778296103 28,093 -200,974 2,394 8,123.2690
2021-01-19 2020-03-31 13F/A-1 ROSS STORES COM 778296103 229,067 -117,063 -33.82 19,919 -50.57 0.0799
2020-04-30 2020-03-31 13F ROSS STORES COM 778296103 229,067 -117,063 19,919 79,839.8441
2021-01-19 2019-12-31 13F/A-1 ROSS STORES COM 778296103 346,130 1,376 0.40 40,295 6.41 0.1290
2020-02-06 2019-12-31 13F ROSS STORES COM 778296103 346,130 1,376 40,295 128,880.4588
2021-01-19 2019-09-30 13F/A-1 ROSS STORES COM 778296103 344,754 -127,911 -27.06 37,868 -19.18 0.1337
2019-10-17 2019-09-30 13F ROSS STORES COM 778296103 344,754 -127,911 37,868 133,500.2733
2021-01-19 2019-06-30 13F/A-1 ROSS STORES COM 778296103 472,665 -118,892 -20.10 46,852 -14.93 0.1655
2019-07-19 2019-06-30 13F ROSS STORES COM 778296103 472,665 -118,892 46,852 165,212.4070
2021-01-19 2019-03-31 13F/A-1 ROSS STORES COM 778296103 591,557 39,614 7.18 55,072 20.05 0.2025
2019-05-02 2019-03-31 13F ROSS STORES COM 778296103 591,557 39,614 55,072 202,204.7930
2021-01-19 2018-12-31 13F/A-1 ROSS STORES COM 778296103 551,943 27,059 5.16 45,874 -11.81 0.2060
2019-02-08 2018-12-31 13F ROSS STORES COM 778296103 551,943 27,059 45,874 205,627.9317
2021-01-19 2018-09-30 13F/A-1 ROSS STORES COM 778296103 524,884 21,542 4.28 52,017 21.93 0.2060
2018-10-25 2018-09-30 13F ROSS STORES COM 778296103 524,884 21,542 52,017
2021-01-19 2018-06-30 13F/A-1 ROSS STORES COM 778296103 503,342 6,221 1.25 42,661 10.04 0.1943
2018-08-03 2018-06-30 13F ROSS STORES COM 778296103 503,342 6,221 42,661
2021-01-19 2018-03-31 13F/A-1 ROSS STORES COM 778296103 497,121 46,447 10.31 38,768 7.19 0.1819
2018-05-07 2018-03-31 13F ROSS STORES COM 778296103 497,121 46,447 38,768 181,299.8010
2021-01-19 2017-12-31 13F/A-1 ROSS STORES COM 778296103 450,674 101,368 29.02 36,166 60.38 0.1874
2018-01-25 2017-12-31 13F ROSS STORES COM 778296103 450,674 101,368 36,166
2021-01-19 2017-09-30 13F/A-1 ROSS STORES COM 778296103 349,306 9,412 2.77 22,550 14.92 0.1400
2017-10-17 2017-09-30 13F ROSS STORES COM 778296103 349,306 9,412 22,550 139,705.1608
2021-01-19 2017-06-30 13F/A-1 ROSS STORES COM 778296103 339,894 35,988 11.84 19,623 -1.97 0.1264
2017-08-07 2017-06-30 13F ROSS STORES COM 778296103 339,894 35,988 19,623 127,761.5337
2021-01-19 2017-03-31 13F/A-1 ROSS STORES COM 778296103 303,906 171,119 128.87 20,018 129.80 0.1333
2017-05-15 2017-03-31 13F ROSS STORES COM 778296103 303,906 171,119 20,018 132,958.3471
2017-02-09 2016-12-31 13F ROSS STORES COM 778296103 132,787 55,051 70.82 8,711 74.32 0.0681
2016-11-07 2016-09-30 13F ROSS STORES COM 778296103 77,736 -20,998 -21.27 4,997 -10.74 0.0369
2016-07-22 2016-06-30 13F ROSS STORES COM 778296103 98,734 -5,398 -5.18 5,598 -7.15 0.0424
2016-05-16 2016-03-31 13F ROSS STORES COM 778296103 104,132 55,476 114.02 6,029 130.20 0.0484
2016-02-08 2015-12-31 13F ROSS STORES COM 778296103 48,656 -40,108 -45.18 2,619 -39.15 0.0224
2015-11-12 2015-09-30 13F ROSS STORES COM 778296103 88,764 0 0.00 4,304 -0.25 0.0328
2015-08-17 2015-06-30 13F ROSS STORES COM 778296103 88,764 75,291 558.83 4,315 204.09 0.0328
2015-04-24 2015-03-31 13F ROSS STORES COM 778296103 13,473 5,697 73.26 1,419 93.59 0.0107
2015-02-12 2014-12-31 13F ROSS STORES COM 778296103 7,776 -158 -1.99 733 22.17 0.0053
2014-11-10 2014-09-30 13F ROSS STORES COM 778296103 7,934 0 0.00 600 14.29 0.0043
2014-08-13 2014-06-30 13F ROSS STORES COM 778296103 7,934 1,386 21.17 525 12.18 0.0038
2014-05-07 2014-03-31 13F ROSS STORES COM 778296103 6,548 0 0.00 468 -4.68 0.0036
2014-02-04 2013-12-31 13F ROSS STORES COM 778296103 6,548 0 0.00 491 2.94 0.0041
2013-11-12 2013-09-30 13F ROSS STORES COM 778296103 6,548 0 0.00 477 12.50 0.0046
2013-08-27 2013-06-30 13F Ross Stores COM 778296103 6,548 6,548 424 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.