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finance.yahoo.comSEP 262 min read$COST

Costco (COST) vs Walmart (WMT): Which is a Better Stock to Buy?

Costco (COST) reported Q4 earnings of $6.75 per share, slightly above estimates, with comparable sales up 9.4%. Membership income reached $1.85 billion. Walmart (WMT) showed faster membership income growth, with Sam's Club outperforming Costco in sales and membership income growth. Both companies trade at similar valuations.

Original reporting
finance.yahoo.com
Published Sep 26, 2026, 3:39 AM UTC
Analysis
AlphAI AI DeskAI-generated
Added to AlphAI Sep 26, 2026, 5:07 AM UTC. Informational, not investment advice.
How this was made
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Costco (COST) vs Walmart (WMT): Which is a Better Stock to Buy? — source image
Source · finance.yahoo.com
Decision brief

The 30-second read

$COSTBullishMed
01

Why it matters

The earnings beat reinforces Costco's pricing power but the one‑off tariff refund tempers the upside.

02

Market read

Large‑cap retailer earnings provide insight into consumer spending trends.

03

What to watch

Membership renewal rate slowdown and slower membership income growth may pressure Costco margins.

Relevance 9/10Novelty 8/10Timing: after‑hours Sep 24 earnings release

Background

Costco's Q4 results compare its performance to Walmart and Sam's Club, highlighting membership dynamics.

Company-level read

Ticker impact

$COSTBullishHigh confidence
Context

Costco reported Q4 earnings of $6.75 per share, beating the consensus $6.55.

Expected impact

Potential modest rally in after‑hours trading.

Evidence & confidence

Beat driven by strong comparable sales and membership revenue, but margin impact limited by one‑off tariff refund.

Market effects

Sector

Retail sector valuation may be reassessed as Costco shows resilient sales.

Regional

US

Global

global

Counterpoint

What could challenge this read

Walmart's lower valuation multiples could make it a better long‑term buy despite slower growth.

Key entities

  • company
    Costco Wholesale Corporation

    US retailer reporting Q4 earnings.

  • company
    Walmart Inc.

    Peer retailer used for comparative analysis.

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