Costco Wholesale stock edges lower as August 2026 sales rise nearly 10 percent

Costco Wholesale stock (ISIN US22160K1051) closed at 928.48 USD on the Nasdaq under the ticker COST for the latest session, down 1.22% from the previous close as of September 2, 2026, according to market data compiled by Yahoo Finance.

August sales growth nears 10 percent

On September 2, 2026, Costco Wholesale reported net sales of 23.70 billion USD for the retail month of August 2026, covering the four weeks ended August 30, 2026, an increase of 9.9 percent from 21.56 billion USD in the prior-year period, according to a Globe Newswire release summarized by Yahoo Finance.

For the 16-week fourth quarter ended August 30, 2026, the company reported net sales of 93.9 billion USD, up 11.3 percent compared with 84.4 billion USD a year earlier, highlighting that growth accelerated on a quarterly basis versus the already solid monthly trend, as detailed in the same sales update.

Fiscal 2026 net sales top 297 billion USD

For the 52-week fiscal year ended August 30, 2026, Costco Wholesale generated net sales of 297.3 billion USD, representing a 10.2 percent increase from 269.9 billion USD in the prior fiscal year, according to the Globe Newswire figures carried by QuiverQuant.

The same disclosure shows that fourth-quarter net sales of 93.9 billion USD accounted for roughly 31.6 percent of the fiscal 2026 net sales base, underlining how heavily the membership and holiday-related period contributes to Costco Wholesale's annual revenue profile.

Earnings momentum and valuation context

Beyond the latest sales figures, Costco Wholesale's most recently reported full quarterly earnings for fiscal 2026 show that in the second quarter of fiscal 2026 the company delivered earnings per diluted share of 4.58 USD, slightly above the 4.54 USD consensus estimate, and total revenue of 69.6 billion USD, 9.2 percent higher year over year, based on an earnings recap compiled by 247WallSt.

The same analysis notes that net income in Costco Wholesale's fiscal second quarter of 2026 rose 13.8 percent to 2.04 billion USD compared with the prior-year period, indicating that profit growth outpaced revenue expansion as the company benefited from operating leverage and continued strong membership economics.

Representative product: Costco membership model

A core driver of Costco Wholesale's business remains its annual membership program, which underpins traffic and spending across its global warehouse network and supports the scale needed to negotiate low prices for customers.

Costco Wholesale stock and market snapshot

As of the close on September 2, 2026, Costco Wholesale stock traded at 928.48 USD on the Nasdaq, equating to a market capitalization of about 416.85 billion USD based on recent trading data compiled by MarketBeat, leaving the shares not far below a recent trading level of 939.96 USD that keeps them close to their upper range for 2026.