Costco Wholesale Corporation
MX ˙ BMV ˙ US22160K1051
SecurityMX:COST / Costco Wholesale Corporation
InstitutionSteigerwald, Gordon & Koch Inc.
Latest Disclosed Ownership1,432 shares
Latest Disclosed Value $ 1,427,062
Steigerwald, Gordon & Koch Inc. reports 1.49% increase in ownership of COST / Costco Wholesale Corporation

On April 28, 2026 - Steigerwald, Gordon & Koch Inc. filed a 13F-HR form disclosing ownership of 1,432 shares of Costco Wholesale Corporation (MX:COST) valued at $1,427,062 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 23, 2026 disclosing 1,411 shares of Costco Wholesale Corporation. This represents a change in shares of 1.49% 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)
2026-04-28 2026-03-31 13F Costco Wholesale COMMON 22160K105 1,432 21 1.49 1,427 17.26 0.1465
2026-01-23 2025-12-31 13F Costco Wholesale COM 22160K105 1,411 9 0.64 1,217 -6.24 0.1168
2025-10-23 2025-09-30 13F Costco Wholesale COMMON 22160K105 1,402 -10 -0.71 1,298 -7.15 0.1246
2025-07-14 2025-06-30 13F COSTCO WHSL CORP COM 22160K105 1,412 -12 -0.84 1,398 3.79 0.1474
2025-04-10 2025-03-31 13F COSTCO WHSL CORP COM 22160K105 1,424 -50 -3.39 1,347 -0.22 0.1503
2025-01-16 2024-12-31 13F COSTCO WHSL CORP COM 22160K105 1,474 -6 -0.41 1,351 2.90 0.1526
2024-10-09 2024-09-30 13F COSTCO WHSL CORP COM 22160K105 1,480 15 1.02 1,312 5.38 0.1431
2024-08-07 2024-06-30 13F COSTCO WHSL CORP COM 22160K105 1,465 25 1.74 1,245 18.12 0.1506
2024-04-16 2024-03-31 13F COSTCO WHSL CORP COM 22160K105 1,440 -2 -0.14 1,055 10.83 0.1313
2024-01-16 2023-12-31 13F COSTCO WHSL CORP COM 22160K105 1,442 93 6.89 952 24.80 0.1288
2023-10-11 2023-09-30 13F COSTCO WHSL CORP COM 22160K105 1,349 28 2.12 762 7.17 0.1162
2023-07-17 2023-06-30 13F COSTCO WHSL CORP COM 22160K105 1,321 0 0.00 711 8.38 0.1043
2023-04-19 2023-03-31 13F COSTCO WHSL CORP COM 22160K105 1,321 29 2.24 656 11.38 0.0981
2023-01-17 2022-12-31 13F COSTCO WHSL CORP COM 22160K105 1,292 -235 -15.39 590 -18.31 0.0938
2022-10-12 2022-09-30 13F COSTCO WHSL CORP COM 22160K105 1,527 41 2.76 721 1.26 0.1321
2022-07-14 2022-06-30 13F COSTCO WHSL CORP COM 22160K105 1,486 -63 -4.07 712 -20.18 0.1241
2022-04-25 2022-03-31 13F COSTCO WHSL CORP COM 22160K105 1,549 -31 -1.96 892 -0.56 0.1362
2022-01-26 2021-12-31 13F COSTCO WHSL CORP COM 22160K105 1,580 1 0.06 897 26.34 0.1349
2021-10-18 2021-09-30 13F COSTCO WHSL CORP COM 22160K105 1,579 0 0.00 710 13.60 0.1161
2021-07-27 2021-06-30 13F COSTCO WHSL CORP COM 22160K105 1,579 0 0.00 625 12.41 0.1034
2021-04-27 2021-03-31 13F COSTCO WHSL CORP COM 22160K105 1,579 -9 -0.57 556 -7.02 0.1033
2021-01-22 2020-12-31 13F COSTCO WHSL CORP COM 22160K105 1,588 0 0.00 598 6.03 0.1214
2020-10-14 2020-09-30 13F COSTCO WHSL CORP COM 22160K105 1,588 20 1.28 564 18.74 0.1335
2020-07-14 2020-06-30 13F COSTCO WHSL CORP COM 22160K105 1,568 14 0.90 475 7.22 0.1259
2020-04-20 2020-03-31 13F COSTCO WHSL CORP COM 22160K105 1,554 -380 -19.65 443 -22.01 0.1503
2020-01-27 2019-12-31 13F COSTCO WHSL CORP COM 22160K105 1,934 452 30.50 568 33.02 0.1334
2019-10-30 2019-09-30 13F COSTCO WHSL CORP COM 22160K105 1,482 -174 -10.51 427 -2.51 0.1089
2019-07-15 2019-06-30 13F COSTCO WHSL CORP COM 22160K105 1,656 -555 -25.10 438 -18.13 0.1134
2019-04-18 2019-03-31 13F COSTCO WHSL CORP COM 22160K105 2,211 36 1.66 535 20.77 0.1413
2019-01-18 2018-12-31 13F COSTCO WHSL CORP COM 22160K105 2,175 25 1.16 443 -12.28 0.1320
2018-10-11 2018-09-30 13F COSTCO WHSL CORP COM 22160K105 2,150 -179 -7.69 505 3.70 0.1268
2018-09-13 2018-06-30 13F COSTCO WHSL CORP COM 22160K105 2,329 400 20.74 487 34.16 0.1291
2018-09-13 2018-03-31 13F COSTCO WHSL CORP COM 22160K105 1,929 1 0.05 363 1.11 0.1016
2018-09-13 2017-12-31 13F COSTCO WHSL CORP COM 22160K105 1,928 0 0.00 359 13.25 0.0989
2018-09-13 2017-09-30 13F COSTCO WHSL CORP COM 22160K105 1,928 1 0.05 317 2.92 0.0874
2018-09-13 2017-06-30 13F COSTCO WHSL CORP COM 22160K105 1,927 34 1.80 308 -2.84 0.0868
2018-09-13 2017-03-31 13F COSTCO WHSL CORP COM 22160K105 1,893 177 10.31 317 15.27 0.0939
2018-09-13 2016-12-31 13F COSTCO WHSL CORP COM 22160K105 1,716 1,716 275 0.0877
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.