Costco will be opening two new stores in California this week and four more in other states next week, which will drive the wholesaler's plan to have over 900 locations worldwide. A new location opens Friday in Brentwood and another on Saturday in Highland.

Costco Wholesale would consider making changes to its international supply chain if tariffs from U.S. President Donald Trump lead to big price hikes, Chief Executive Officer Ron Vachris said on a conference call on Thursday.

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Americans will be preparing to welcome the spring season and seeking out the best items to buy in bulk from Costco to save money as President Trump's tariffs begin to take effect.

The long-stalled Costco store in Brentwood opened on Friday, the chain’s largest in Contra Costa County.

Costco delivered strong quarterly revenue as shoppers turned to the wholesale club to deliver value in the face of high prices elsewhere.

Costco reports results on Thursday. Analysts say the firm's choice to stick with DEI efforts could sway different consumers in different ways.

The largest Costco in Contra Costa County opened in Brentwood Friday with a ribbon-cutting ceremony.Veronica Macias reports.

Costco reported fiscal second-quarter sales that topped analysts’ estimates, but earnings missed as costs rose.