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The Largest Consumer Staple Companies by Market Cap in March 2026

Walmart, Costco, and Procter & Gamble lead the consumer staples sector.

By Lyle DalyUpdated Jan 12, 2026 at 12:00 PM EST | Fact-checked by Frank Bass

Key Points

  • Walmart leads the consumer staples sector with a market cap of $1 trillion.
  • Costco's business model focuses on membership fees to sustain low product prices.
  • Procter & Gamble markets well-known brands across over 180 countries.

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