Costco Wholesale Corporation
MX ˙ BMV ˙ US22160K1051
SecurityMX:COST / Costco Wholesale Corporation
InstitutionBridgewater Advisors Inc.
Latest Disclosed Ownership1,785 shares
Latest Disclosed Value $ 1,843,682
Bridgewater Advisors Inc. reports 2.59% increase in ownership of COST / Costco Wholesale Corporation

On May 14, 2026 - Bridgewater Advisors Inc. filed a 13F-HR form disclosing ownership of 1,785 shares of Costco Wholesale Corporation (MX:COST) valued at $1,843,682 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 23, 2026 disclosing 1,740 shares of Costco Wholesale Corporation. This represents a change in shares of 2.59% 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)
2026-05-14 2026-03-31 13F COSTCO WHOLESALE COM 22160K105 1,785 45 2.59 1,844 7.78 0.1097
2026-01-23 2025-12-31 13F COSTCO WHSL CORP COM 22160K105 1,740 54 3.20 1,710 9.83 0.1108
2025-11-10 2025-09-30 13F COSTCO WHSL CORP COM 22160K105 1,686 -94 -5.28 1,557 -6.37 0.1080
2025-08-05 2025-06-30 13F COSTCO WHSL CORP COM 22160K105 1,780 -17 -0.95 1,664 -6.68 0.1265
2025-05-02 2025-03-31 13F COSTCO WHSL CORP COM 22160K105 1,797 1,797 1,782 0.1542
2021-05-20 2021-03-31 13F COSTCO WHSL CORP COM 22160K105 0 -17,772 -100.00 0 -100.00
2014-08-14 2014-06-30 13F COSTCO WHSL CORP COM 22160K105 17,772 -209 -1.16 2,047 1.94 1.7132
2014-05-01 2014-03-31 13F COSTCO WHSL CORP COM 22160K105 17,981 -195 -1.07 2,008 -7.17 2.0191
2014-02-21 2013-12-31 13F COSTCO WHSL CORP COM 22160K105 18,176 18,176 2,163 2.2231
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.