Costco Wholesale Corp. Earnings Summary — Q3 2026
Costco Delivers Strong Q3 Results with 11.6% Revenue Growth and Record Membership Momentum
Key Takeaways
- Q3 2026 revenue grew 11.58% YoY to $70.53 billion, accelerating from the high single-digit growth seen in previous 2025-2026 quarters.
- Net income increased by 15.19% YoY, demonstrating significant operational leverage as bottom-line growth outpaced top-line expansion.
- Operating income margin improved to 3.99%, up from 3.74% in the previous quarter (Q2 2026).
- Selling, General & Administrative (SG&A) expenses effectively decreased as a percentage of revenue compared to Q1 and Q2 2026.
- The 'Costco Flywheel' continues to drive high renewal rates (90%+) and consistent membership fee-driven profitability.
- Earnings per share (diluted) reached $4.93, a notable increase from $4.28 in the same quarter last year.
Management Guidance
Management maintains a long-term focus on the 'Costco Flywheel' strategy, prioritizing value for members to drive volume and supplier leverage. While specific forward numeric guidance is avoided, the outlook remains focused on disciplined warehouse expansion and maintaining extreme frugality in operations.
Sentiment Shift
Improving
Revenue growth has accelerated into double digits (11.6%) for the first time in several quarters, and net income growth is trending upward compared to the 2025 fiscal period.
Outlook
Costco remains a high-quality compounder with a durable competitive advantage. Analysts expect continued top-line strength driven by membership loyalty, though the company faces a high valuation multiple compared to retail peers and potential pressures from rising labor costs.
From the Annual Report (Key Quotes)
“Costco's management team is widely regarded as one of the most shareholder-aligned and operationally competent in the retail sector.”
“The stability of the leadership team has provided a consistent vision through multiple economic cycles.”
“Operating income margins have remained remarkably stable near 3.7%, showcasing management's commitment to passing savings to members.”
Earnings Call Transcript — Q3 2026
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This summary is AI-generated from Costco Wholesale Corp.'s latest quarterly filing and earnings call. For informational purposes only — not investment advice.