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Mega Cap
Discount Stores
Stocks Ranked by
Market Capitalization

Name Market cap Price Price
change %
WMT icon
1
Walmart Inc
WMT
$889B
$889B $111.74 2.07%
COST icon
2
Costco
COST
$422B
$422B $951.58 1.77%

Mega Cap Discount Stores Stocks at a Glance

Discount stores sell everyday merchandise at low price points across variety and general-merchandise formats. Traffic tends to hold up — or improve — in downturns as consumers trade down, making the group one of retail's most defensive, with margins resting on sourcing scale and cost discipline.

There are 2 mega cap Discount Stores stocks — companies in the Discount Stores industry with a market cap over $200B — worth a combined $1.31T.

The largest by market cap are Walmart Inc (WMT) at $889B and Costco (COST) at $422B.

Among institutional investors, Costco (COST) drew the most net new fund positions in Q1 2026: 320 funds opened new positions, taking total fund holders up 124 (3%) quarter-over-quarter.

  • Combined market cap: $1.31T across 2 stocks.
  • Mega Cap: market cap over $200B.
  • Largest constituent: Walmart Inc (WMT), $889B market cap.
  • Most net new fund positions in Q1 2026: Costco (COST), +124 holders.

Market caps and prices updated daily; fund activity based on aggregated SEC 13F filings for Q1 2026.