Ross Stores, Inc.
MX ˙ BMV ˙ US7782961038
SecurityMX:ROST / Ross Stores, Inc.
InstitutionAmeriprise Financial Inc
Latest Disclosed Ownership1,769,438 shares
Latest Disclosed Value $ 383,316,260
Ameriprise Financial Inc reports 157.96% increase in ownership of ROST / Ross Stores, Inc.

On May 15, 2026 - Ameriprise Financial Inc filed a 13F-HR form disclosing ownership of 1,769,438 shares of Ross Stores, Inc. (MX:ROST) valued at $383,316,260 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 685,935 shares of Ross Stores, Inc.. This represents a change in shares of 157.96% 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 1,769,438 1,083,503 157.96 383,316 210.22 0.0164
2026-02-17 2025-12-31 13F ROSS STORES COM 778296103 685,935 460,777 204.65 123,564 260.12 0.0051
2025-11-14 2025-09-30 13F ROSS STORES COM 778296103 225,158 -27,897 -11.02 34,312 6.25 0.0014
2025-08-14 2025-06-30 13F ROSS STORES COM 778296103 253,055 29,572 13.23 32,296 13.07 0.0080
2025-05-14 2025-03-31 13F ROSS STORES COM 778296103 223,483 -18,755 -7.74 28,561 -22.06 0.0077
2025-02-14 2024-12-31 13F ROSS STORES COM 778296103 242,238 -287,498 -54.27 36,646 -54.04 0.0094
2024-11-14 2024-09-30 13F ROSS STORES COM 778296103 529,736 -183,647 -25.74 79,734 -23.09 0.0204
2024-08-14 2024-06-30 13F ROSS STORES COM 778296103 713,383 -300,925 -29.67 103,669 -30.37 0.0281
2024-05-15 2024-03-31 13F ROSS STORES COM 778296103 1,014,308 -16,059 -1.56 148,875 4.41 0.0410
2024-02-14 2023-12-31 13F ROSS STORES COM 778296103 1,030,367 356,282 52.85 142,592 87.28 0.0427
2023-11-14 2023-09-30 13F ROSS STORES COM 778296103 674,085 416,431 161.62 76,138 163.54 0.0250
2023-08-14 2023-06-30 13F ROSS STORES COM 778296103 257,654 -60,241 -18.95 28,891 -14.37 0.0091
2023-05-22 2023-03-31 13F/A-1 ROSS STORES COM 778296103 317,895 -102,270 -24.34 33,738 -30.82 0.0111
2023-05-15 2023-03-31 13F ROPER TECHNOLOGIES COM 778296103 317,895 -102,270 33,738 0.0020
2023-02-14 2022-12-31 13F ROSS STORES COM 778296103 420,165 9,381 2.28 48,768 39.53 0.0167
2022-11-14 2022-09-30 13F ROSS STORES COM 778296103 410,784 -7,599 -1.82 34,951 20.01 0.0129
2022-08-15 2022-06-30 13F ROSS STORES COM 778296103 418,383 -49,380 -10.56 29,123 -29.44 0.0102
2022-05-16 2022-03-31 13F ROSS STORES COM 778296103 467,763 -1,185,158 -71.70 41,277 -77.90 0.0122
2022-02-14 2021-12-31 13F ROSS STORES COM 778296103 1,652,921 -685,674 -29.32 186,806 -26.62 0.0517
2021-11-15 2021-09-30 13F ROSS STORES COM 778296103 2,338,595 854,901 57.62 254,557 38.37 0.0813
2021-08-16 2021-06-30 13F ROSS STORES COM 778296103 1,483,694 1,020,104 220.04 183,974 230.97 0.0569
2021-05-17 2021-03-31 13F ROSS STORES COM 778296103 463,590 -11,729 -2.47 55,587 -4.77 0.0185
2021-02-12 2020-12-31 13F ROSS STORES COM 778296103 475,319 36,916 8.42 58,374 42.68 0.0207
2020-11-16 2020-09-30 13F ROSS STORES COM 778296103 438,403 102,936 30.68 40,913 43.48 0.0166
2020-08-14 2020-06-30 13F ROSS STORES COM 778296103 335,467 -7,473 -2.18 28,514 -4.39 0.0122
2020-05-15 2020-03-31 13F ROSS STORES COM 778296103 342,940 37,191 12.16 29,822 -16.23 0.0157
2020-02-14 2019-12-31 13F ROSS STORES COM 778296103 305,749 -2,237 -0.73 35,598 5.21 0.0148
2019-11-14 2019-09-30 13F ROSS STORES COM 778296103 307,986 -57,443 -15.72 33,835 -6.63 0.0152
2019-08-14 2019-06-30 13F ROSS STORES COM 778296103 365,429 118,764 48.15 36,239 57.76 0.0162
2019-05-15 2019-03-31 13F ROSS STORES COM 778296103 246,665 -95,952 -28.01 22,971 -19.42 0.0106
2019-02-14 2018-12-31 13F ROSS STORES COM 778296103 342,617 -268,774 -43.96 28,506 -52.95 0.0143
2018-11-14 2018-09-30 13F ROSS STORES INC COM COM 778296103 611,391 -60,209 -8.97 60,591 6.45 0.0212
2018-08-14 2018-06-30 13F ROSS STORES COM 778296103 671,600 -24,712 -3.55 56,922 4.81 0.0252
2018-05-14 2018-03-31 13F ROSS STORES COM 778296103 696,312 -2,135,650 -75.41 54,309 -76.10 0.0246
2018-02-12 2017-12-31 13F ROSS STORES COM 778296103 2,831,962 -2,216,231 -43.90 227,271 -30.28 0.1037
2017-11-07 2017-09-30 13F ROSS STORES COM 778296103 5,048,193 -376,008 -6.93 325,963 4.10 0.1551
2017-08-10 2017-06-30 13F ROSS STORES COM 778296103 5,424,201 272,437 5.29 313,116 -7.73 0.1567
2017-05-05 2017-03-31 13F ROSS STORES COM 778296103 5,151,764 1,165,463 29.24 339,347 29.77 0.1756
2017-02-03 2016-12-31 13F ROSS STORES COM 778296103 3,986,301 2,956,222 286.99 261,501 294.81 0.1428
2016-11-08 2016-09-30 13F ROSS STORES COM 778296103 1,030,079 227,459 28.34 66,235 45.56 0.0371
2016-08-08 2016-06-30 13F ROSS STORES COM 778296103 802,620 -108,316 -11.89 45,505 -13.72 0.0267
2016-05-12 2016-03-31 13F ROSS STORES COM 778296103 910,936 -102,880 -10.15 52,744 -3.32 0.0315
2016-02-11 2015-12-31 13F ROSS STORES COM 778296103 1,013,816 8,994 0.90 54,554 12.02 0.0320
2015-11-12 2015-09-30 13F ROSS STORES COM 778296103 1,004,822 89,333 9.76 48,702 9.44 0.0302
2015-08-13 2015-06-30 13F ROSS STORES COM 778296103 915,489 610,219 199.89 44,503 38.39 0.0253
2015-05-14 2015-03-31 13F ROSS STORES COM 778296103 305,270 -63,257 -17.16 32,158 -7.42 0.0185
2015-02-13 2014-12-31 13F ROSS STORES COM 778296103 368,527 141,281 62.17 34,737 102.25 0.0202
2014-11-14 2014-09-30 13F ROSS STORES COM 778296103 227,246 -70,884 -23.78 17,175 -12.88 0.0103
2014-08-13 2014-06-30 13F ROSS STORES COM 778296103 298,130 -42,248 -12.41 19,715 -19.05 0.0116
2014-05-14 2014-03-31 13F ROSS STORES COM 778296103 340,378 -460,262 -57.49 24,354 -59.40 0.0146
2014-02-14 2013-12-31 13F ROSS STORES COM 778296103 800,640 -168,781 -17.41 59,991 -15.00 0.0363
2013-11-14 2013-09-30 13F ROSS STORES COM 778296103 969,421 -843,184 -46.52 70,576 -39.92 0.0463
2013-08-14 2013-06-30 13F ROSS STORES COM 778296103 1,812,605 1,812,605 117,474 0.0813
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.