Ross Stores, Inc.
MX ˙ BMV ˙ US7782961038
SecurityMX:ROST / Ross Stores, Inc.
InstitutionBlack Diamond Financial, LLC
Latest Disclosed Ownership2,017 shares
Latest Disclosed Value $ 436,942
Black Diamond Financial, LLC reports 2.44% increase in ownership of ROST / Ross Stores, Inc.

On May 5, 2026 - Black Diamond Financial, LLC filed a 13F-HR form disclosing ownership of 2,017 shares of Ross Stores, Inc. (MX:ROST) valued at $436,942 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 3, 2026 disclosing 1,969 shares of Ross Stores, Inc.. This represents a change in shares of 2.44% 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)
2026-05-05 2026-03-31 13F ROSS STORES COM 778296103 2,017 48 2.44 437 23.16 0.0477
2026-02-03 2025-12-31 13F ROSS STORES COM 778296103 1,969 156 8.60 355 28.26 0.0374
2025-11-05 2025-09-30 13F ROSS STORES COM 778296103 1,813 1,813 276 0.0310
2025-07-30 2025-06-30 13F ROSS STORES COM 778296103 0 -1,813 -100.00 0 -100.00
2025-04-30 2025-03-31 13F ROSS STORES COM 778296103 1,813 0 0.00 232 -15.69 0.0348
2025-02-04 2024-12-31 13F ROSS STORES COM 778296103 1,813 393 27.68 274 28.64 0.0411
2024-11-06 2024-09-30 13F ROSS STORES COM 778296103 1,420 0 0.00 214 3.40 0.0363
2024-08-09 2024-06-30 13F ROSS STORES COM 778296103 1,420 1,420 206 0.0398
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.