Costco stock (NASDAQ: COST) is back in the spotlight after the warehouse retail giant reported fourth-quarter fiscal 2026 revenue of approximately $95.72 billion, representing an 11.2% increase from the corresponding period a year earlier, according to a September 24 earnings snapshot published by Seeking Alpha. The latest results highlight the company’s ability to generate substantial sales growth despite ongoing pressure on household budgets, but they also raise a question for shareholders: can Costco translate its expanding revenue into the earnings growth necessary to support its stock market valuation?
The results arrive at an important moment for the retailer. Costco’s share price has retreated from its previous record highs, while investors have become increasingly attentive to membership growth, operating margins, and the company’s ability to maintain its reputation for delivering value to consumers. Although Costco’s business continues to expand, its stock market performance depends on more than the number of shoppers passing through its warehouse doors. Investors are also assessing whether higher sales are producing stronger profitability and whether the company’s long-term expansion can justify the expectations already reflected in its share price.
For shareholders, the latest earnings announcement offers an opportunity to examine how Costco’s business model is performing as the company enters fiscal 2027. The headline revenue figure is substantial, but the more revealing details lie in comparable sales, membership economics, digital commerce, and the relationship between revenue growth and operating costs.
Costco’s $95.72 Billion Quarter Reveals the Strength of Its Retail Business
Costco’s fourth-quarter revenue of approximately $95.72 billion represents another substantial expansion in the company’s business, with the reported 11.2% year-over-year increase demonstrating continued demand across its warehouse operations. The result also builds on the company’s September 2 sales announcement, which disclosed that net merchandise sales for the 16-week quarter reached $93.9 billion, up 11.3% from $84.4 billion in the prior-year period. Those previously reported net sales figures excluded membership fee revenue and certain other components included in total quarterly revenue, explaining why the broader earnings figure is higher.
Costco’s business model is built around offering a relatively limited assortment of products at competitive prices while generating recurring income from annual membership fees. Unlike traditional retailers that depend primarily on merchandise margins, Costco can use its membership structure to reinforce customer loyalty and support a pricing strategy centered on high sales volumes. This approach has helped the company maintain a large base of repeat customers across its warehouse network, although it also means that membership renewals, shopping frequency, and the cost of maintaining competitive prices are particularly important indicators of its financial health.
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The fourth-quarter results suggest that demand for Costco’s merchandise remained resilient during the summer, but the revenue figure alone does not reveal how effectively the company converted that demand into additional profit. Higher merchandise costs, labor expenses, transportation costs, and investments in new warehouses can influence earnings even when sales are increasing. That distinction matters for COST stock because investors are evaluating not simply whether the business is growing, but whether its profitability can expand alongside its revenue.
Comparable Sales Reveal Why Costco’s Growth Story Goes Beyond New Warehouses
One of the most important figures in Costco’s fourth-quarter performance is comparable sales growth, which measures changes in sales at established locations rather than simply reflecting the opening of additional warehouses. In its September sales announcement, Costco reported that worldwide comparable sales increased 9.4% during the fourth quarter, with particularly strong growth in its domestic business. U.S. comparable sales advanced 10.7%, while Canada recorded growth of 5.0% and other international markets delivered a 7.0% increase.
These figures indicate that Costco’s existing operations contributed meaningfully to its revenue expansion, although gasoline prices and foreign-exchange movements influenced the reported growth rates. Excluding those effects, worldwide comparable sales increased 6.7%, while adjusted U.S. comparable sales rose 7.2%. The difference between reported and adjusted growth is important because higher gasoline prices can increase the dollar value of fuel sales without necessarily indicating that customers are purchasing proportionately more merchandise. Currency movements can similarly affect the reported dollar value of sales generated by international operations.
For investors following Costco stock, the adjusted figures provide additional context for assessing underlying shopping activity. Growth at established warehouses can indicate that existing customers are spending more, visiting more frequently, or that the company is attracting additional shoppers, although the aggregate sales figures alone do not establish the contribution of each factor. The ability to maintain comparable sales growth is particularly relevant as Costco expands its physical footprint, because new warehouses require investment and may take time to reach their intended operating performance.
Membership Fees Could Be the Most Important Number Behind Costco’s Earnings
Costco’s membership business remains central to its financial performance, making membership fee income and renewal rates important measures of the company’s ability to sustain profitability. Unlike merchandise revenue, membership fees provide recurring income that supports Costco’s broader pricing strategy, allowing the company to emphasize competitive prices while maintaining its warehouse operations. The retailer increased its annual membership fees in September 2024, raising the standard U.S. and Canadian membership price from $60 to $65 and Executive membership from $120 to $130. The financial effects of that increase have been an important consideration in evaluating subsequent membership revenue growth.
During the fourth quarter of fiscal 2025, Costco generated approximately $1.72 billion in membership fee revenue, illustrating the substantial contribution of annual subscriptions to its business model. However, investors are interested in more than the absolute amount of membership income. Growth in paid memberships, renewal rates, and Executive membership participation can provide additional information about customer loyalty and the company’s ability to maintain its recurring revenue base. A higher membership fee can increase revenue per member, but sustained long-term growth also depends on attracting and retaining customers.
The membership issue has become particularly relevant to COST stock following signs of slower membership growth earlier in 2026. In May, Costco reported approximately 82.9 million paid members, slightly below the 83.08 million anticipated by analysts cited in contemporary earnings coverage. The difference was relatively modest, but it drew attention because membership growth is an important component of the company’s long-term financial model. The fourth-quarter results and accompanying management commentary will therefore be important for assessing whether the company’s customer base is continuing to expand and whether existing members remain willing to renew at the current membership prices.
Costco’s Digital Business Is Growing Faster Than Its Warehouses
While Costco is primarily associated with enormous physical warehouses and bulk merchandise, its digitally enabled business has become an increasingly important source of sales growth. During the fourth quarter, digitally enabled comparable sales increased 19.5%, substantially exceeding the company’s overall comparable sales growth of 9.4%. Excluding gasoline-price and foreign-exchange effects, digitally enabled comparable sales rose 19.8%, demonstrating that the digital channel’s expansion was not primarily explained by those external factors.
The growth reflects Costco’s effort to make its value-oriented retail model more accessible through online shopping and digitally supported purchasing options. Although its warehouses remain central to the business, digital services offer additional ways for customers to purchase merchandise without relying exclusively on traditional in-store shopping. Costco’s digitally enabled operations also provide opportunities to reach customers who value convenience alongside the company’s established merchandise pricing and membership benefits.
For investors, the financial implications depend on more than the rate of digital sales growth. Online fulfillment, delivery, technology investment, and other operating expenses can affect profitability, making the economics of digitally enabled sales an important consideration. Nevertheless, the fourth-quarter figures demonstrate that Costco is expanding through multiple sales channels rather than relying solely on new physical locations. The next challenge is determining whether that growth can contribute meaningfully to earnings while preserving the pricing strategy that attracts members.
Costco Stock Has Retreated From Its Highs Despite Strong Sales Growth
Costco’s latest earnings arrive against a backdrop of increased investor scrutiny surrounding the retailer’s valuation. Shares closed at approximately $904.70 on September 23, compared with a record closing high of roughly $1,094.32 reached earlier in 2026. The difference represents a decline of approximately 17% from that high, illustrating that strong operating performance has not prevented the stock from experiencing a substantial pullback.
The retreat highlights an important distinction between business performance and stock market expectations. Costco has demonstrated substantial revenue growth, but its share price also reflects assumptions about future profitability, membership expansion, and the returns generated by continued investment in its warehouse network. When a company trades at a relatively high valuation, even positive earnings results can be accompanied by share-price volatility if investors had anticipated stronger performance or if management introduces new uncertainty about future growth.
Before Thursday’s earnings announcement, analysts were expecting quarterly earnings of approximately $6.53 to $6.55 per share and total revenue of roughly $94.9 billion. Against that revenue benchmark, the reported $95.72 billion figure would represent a positive sales surprise, although the final assessment of quarterly performance also depends on reported earnings per share, profit margins, and management commentary.
Costco Stock Forecast 2026: Can Profit Growth Support Its Valuation?
The outlook for Costco stock heading into fiscal 2027 depends on how effectively the company converts its expanding sales into sustainable earnings growth. Its fourth-quarter revenue demonstrates continued demand, while the previously announced comparable sales figures indicate that existing warehouses remain an important driver of expansion. However, investors will also need to assess membership fee income, renewal rates, gross margins, and operating expenses before determining how the latest results affect the company’s financial trajectory.
The company’s growth strategy introduces additional considerations. Costco continues to expand its warehouse network internationally while investing in digital capabilities and maintaining a pricing approach intended to attract value-conscious consumers. Those initiatives can create opportunities for additional revenue, but new locations and technology investments also require capital and can influence near-term profitability. The company’s next financial disclosures will help establish whether the benefits of expansion are keeping pace with associated costs.
Shareholders will also be watching management’s comments regarding consumer spending, merchandise pricing, and any potential shareholder distributions. Analysts at BofA Securities and Oppenheimer had discussed the possibility of a special dividend ahead of the earnings announcement, although such a payment remained speculative and should not be treated as an approved corporate action. Any future dividend decision would depend on Costco’s board and its assessment of capital requirements and shareholder returns.
The Bigger Question for Costco Stock: How Much Growth Is Already Priced In?
Costco’s latest quarterly performance demonstrates the continuing strength of its membership-based retail model. Revenue has increased substantially, comparable sales remain positive across its major geographic markets, and digitally enabled sales are growing at a considerably faster pace than the business overall. These developments provide investors with measurable evidence of continued commercial expansion, even as the stock remains below its previous record highs.
The central question is whether Costco can sustain that operating momentum while delivering sufficient earnings growth to support its valuation. Membership retention, merchandise margins, digital profitability, and the economics of new warehouse openings will all contribute to that assessment. Strong sales growth provides an important foundation, but future stock performance will also depend on how the company’s results compare with market expectations and whether its expansion produces attractive financial returns.
As Costco enters fiscal 2027, investors have a fresh set of financial results to examine and several important indicators to monitor. The $95.72 billion revenue headline establishes the scale of the company’s latest quarter, but the longer-term investment story will depend on the relationship between customer growth, profitability, and valuation. With expectations surrounding the retailer still substantial, Costco’s next financial reports will reveal whether its expanding business can continue delivering the earnings performance shareholders are anticipating.
Disclaimer
This article is for informational purposes only and does not constitute financial or investment advice. Readers should conduct their own research or consult a qualified financial advisor before making investment decisions. This article was researched and drafted with the support of AI; independent editorial review, fact-checking, and editing are required before publication.
