Becker Capital Management Inc reports 0.57% decrease in ownership of COST / Costco Wholesale Corporation

Costco Wholesale Corporation

MX ˙ BMV ˙ US22160K1051

Security	MX:COST / Costco Wholesale Corporation
Institution	Becker Capital Management Inc
Latest Disclosed Ownership	25,936 shares
Latest Disclosed Value	$ 25,843,449

On May 11, 2026 - Becker Capital Management Inc filed a 13F-HR form disclosing ownership of 25,936 shares of Costco Wholesale Corporation (MX:COST) valued at $25,843,449 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 26,084 shares of Costco Wholesale Corporation. This represents a change in shares of -0.57% 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	Reported Shares	ΔShares	ΔShares (%)	Reported Value (x1000)	ΔValue (%)	Alloc (%)
2026-05-11	2026-03-31	13F	COSTCO WHOLESALE	COM	22160K105	25,936	-148	-0.57	25,843	14.89	0.7596
2026-02-13	2025-12-31	13F	COSTCO WHSL CORP	COM	22160K105	26,084	-193	-0.73	22,493	-7.52	0.6435
2025-11-12	2025-09-30	13F	COSTCO WHSL CORP	COM	22160K105	26,277	-233	-0.88	24,322	-7.32	0.7106
2025-08-14	2025-06-30	13F	COSTCO WHSL CORP	COM	22160K105	26,510	-154	-0.58	26,243	4.06	0.8179
2025-05-15	2025-03-31	13F	COSTCO WHSL CORP	COM	22160K105	26,664	-7	-0.03	25,218	3.20	0.8312
2025-02-14	2024-12-31	13F	COSTCO WHSL CORP	COM	22160K105	26,671	-119	-0.44	24,438	2.89	0.7979
2024-11-08	2024-09-30	13F	COSTCO WHSL CORP	COM	22160K105	26,790	1,828	7.32	23,750	11.94	0.7721
2024-08-13	2024-06-30	13F	COSTCO WHSL CORP	COM	22160K105	24,962	-93	-0.37	21,218	15.59	0.7281
2024-05-15	2024-03-31	13F	COSTCO WHSL CORP	COM	22160K105	25,055	-144	-0.57	18,356	7.90	0.6307
2024-02-14	2023-12-31	13F	COSTCO WHSL CORP	COM	22160K105	25,199	-292	-1.15	17,012	18.12	0.6135
2023-11-14	2023-09-30	13F	COSTCO WHSL CORP	COM	22160K105	25,491	-346	-1.34	14,401	3.54	0.5714
2023-08-14	2023-06-30	13F	COSTCO WHSL CORP	COM	22160K105	25,837	2,074	8.73	13,910	17.80	0.5264
2023-05-15	2023-03-31	13F	COSTCO WHSL CORP	COM	22160K105	23,763	-66	-0.28	11,807	8.55	0.4669
2023-02-13	2022-12-31	13F	COSTCO WHSL CORP	COM	22160K105	23,829	-13	-0.05	10,878	-3.40	0.5068
2022-11-14	2022-09-30	13F	COSTCO WHSL CORP	COM	22160K105	23,842	-493	-2.03	11,260	-3.46	0.5911
2022-08-04	2022-06-30	13F	COSTCO WHSL CORP	COM	22160K105	24,335	-641	-2.57	11,663	-18.91	0.5617
2022-05-12	2022-03-31	13F	COSTCO WHSL CORP	COM	22160K105	24,976	-329	-1.30	14,382	0.12	0.5802
2022-02-08	2021-12-31	13F	COSTCO WHSL CORP	COM	22160K105	25,305	-705	-2.71	14,365	22.90	0.5680
2021-10-14	2021-09-30	13F	COSTCO WHSL CORP	COM	22160K105	26,010	-98	-0.38	11,688	13.15	0.4924
2021-08-12	2021-06-30	13F	Costco Wholesale	Common Stock	22160K105	26,108	-1,460	-5.30	10,330	6.31	0.4385
2021-05-13	2021-03-31	13F	Costco Wholesale	COM	22160K105	27,568	-408	-1.46	9,717	-7.82	0.4378
2021-02-10	2020-12-31	13F	COSTCO WHOLESALE	Common Stock	22160K105	27,976	-986	-3.40	10,541	2.52	0.5208
2020-11-09	2020-09-30	13F	COSTCO WHOLESALE	Common Stock	22160K105	28,962	1,218	4.39	10,282	22.23	0.5707
2020-08-11	2020-06-30	13F	COSTCO WHOLESALE	Common Stock	22160K105	27,744	-2,413	-8.00	8,412	-2.17	0.4765
2020-05-07	2020-03-31	13F	COSTCO WHOLESALE	Common Stock	22160K105	30,157	-563	-1.83	8,599	-4.76	0.5229
2020-02-11	2019-12-31	13F	COSTCO WHOLESALE	Common Stock	22160K105	30,720	-506	-1.62	9,029	0.36	0.3202
2019-11-14	2019-09-30	13F	COSTCO WHOLESALE	Common Stock	22160K105	31,226	-775	-2.42	8,997	6.39	0.3437
2019-08-08	2019-06-30	13F	COSTCO WHSL CORP	Common Stock	22160K105	32,001	-100	-0.31	8,457	8.80	0.3063
2019-05-08	2019-03-31	13F	COSTCO WHOLESALE	Common Stock	22160K105	32,101	-1,212	-3.64	7,773	14.54	0.2880
2019-02-04	2018-12-31	13F	COSTCO WHOLESALE	Common Stock	22160K105	33,313	-1,129	-3.28	6,786	-16.12	0.2647
2018-11-05	2018-09-30	13F	COSTCO WHOLESALE	Common Stock	22160K105	34,442	-111	-0.32	8,090	12.03	0.2575
2018-08-03	2018-06-30	13F	COSTCO WHOLESALE	Common Stock	22160K105	34,553	-370	-1.06	7,221	9.72	0.2397
2018-05-04	2018-03-31	13F	COSTCO WHOLESALE	Common Stock	22160K105	34,923	3,966	12.81	6,581	14.21	0.2183
2018-02-13	2017-12-31	13F	COSTCO WHOLESALE	Common Stock	22160K105	30,957	-2,006	-6.09	5,762	6.41	0.1904
2017-11-02	2017-09-30	13F	COSTCO WHOLESALE	Common Stock	22160K105	32,963	-381	-1.14	5,415	1.54	0.1860
2017-08-11	2017-06-30	13F	COSTCO WHOLESALE	Common Stock	22160K105	33,344	-1,100	-3.19	5,333	-7.67	0.1910
2017-05-12	2017-03-31	13F	COSTCO WHOLESALE	Common Stock	22160K105	34,444	-232	-0.67	5,776	4.03	0.2101
2017-02-28	2016-12-31	13F/A-1	COSTCO WHOLESALE	Common Stock	22160K105	34,676	-1,891	-5.17	5,552	-0.45	0.2055
2017-02-01	2016-12-31	13F	COSTCO WHOLESALE	Common Stock	22160K105	36,401			5,716
2016-11-01	2016-09-30	13F	COSTCO WHOLESALE	Common Stock	22160K105	36,567	166	0.46	5,577	-2.43	0.2185
2016-08-02	2016-06-30	13F	COSTCO WHOLESALE	Common Stock	22160K105	36,401	-431	-1.17	5,716	-1.52	0.2331
2016-05-25	2016-03-31	13F	COSTCO WHOLESALE	Common Stock	22160K105	36,832	-13	-0.04	5,804	-2.45	0.2503
2016-02-03	2015-12-31	13F	COSTCO WHOLESALE	Common Stock	22160K105	36,845	-1,854	-4.79	5,950	6.34	0.2612
2015-11-02	2015-09-30	13F	COSTCO WHOLESALE	Common Stock	22160K105	38,699	-1,025	-2.58	5,595	4.29	0.2525
2015-08-11	2015-06-30	13F	COSTCO WHOLESALE	Common Stock	22160K105	39,724	-531	-1.32	5,365	-12.02	0.2109
2015-05-06	2015-03-31	13F	COSTCO WHOLESALE	Common Stock	22160K105	40,255	40,255	0.00	6,098		0.2374
2015-02-03	2014-12-31	13F	COSTCO WHOLESALE	Common Stock	22160K105	0	-42,376	-100.00	0	-100.00
2014-11-03	2014-09-30	13F	COSTCO WHOLESALE	Common Stock	22160K105	42,376	-34	-0.08	5,311	8.74	0.2180
2014-08-13	2014-06-30	13F	COSTCO WHOLESALE	Common Stock	22160K105	42,410	-135	-0.32	4,884	2.80	0.1998
2014-04-30	2014-03-31	13F	COSTCO WHOLESALE	Common Stock	22160K105	42,545	-2,671	-5.91	4,751	-11.72	0.1949
2014-02-03	2013-12-31	13F	COSTCO WHOLESALE	Common Stock	22160K105	45,216	-791	-1.72	5,382	1.57	0.2208
2013-11-12	2013-09-30	13F	COSTCO WHOLESALE	Common Stock	22160K105	46,007	-635	-1.36	5,299	2.75	0.2431
2013-08-06	2013-06-30	13F	COSTCO WHOLESALE	Common Stock	22160K105	46,642	46,642		5,157		0.2604

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.