Costco's Q4 Sales Rise 11.3% as Digital Momentum Remains Strong

Costco Wholesale posted Q4 fiscal 2026 net sales of $93.9 billion, an 11.3% year-over-year increase, with comparable sales climbing 9.4%. Digital comparable sales surged 19.5%, nearly double the overall comp growth rate, underscoring sustained momentum in the retailer's online channels. For the full fiscal year, digitally enabled comparable sales rose 20.9%.

COST trades at a forward P/E of 40.71, below its 12-month median, according to Zacks Investment Research, which assigns the stock a Rank #3 (Hold). The valuation sits at the higher end for traditional retailers but reflects investor confidence in the warehouse club's pricing power and membership model.

The digital acceleration separates COST from brick-and-mortar peers struggling to match online growth rates. A 19.5% digital comp in a single quarter signals the company is converting members to omnichannel behavior without cannibalizing in-store traffic, a key metric for warehouse clubs dependent on high-volume, low-margin operations.