Shares of broadline retailers fell on Wednesday, a day before many report on last month's same-store sales.

Same-store sales, or sales in stores open at least one year, is a key retail metric because it measures growth at existing stores rather than newly opened ones.

Retailers are expected to report same-store sales ahead of expectations, helped by better weather and rebate checks.

Here's how broadline retailers fared on Wednesday:

Wal-Mart Stores Inc., down $1.44, or 2.4 percent, to $57.67.

Target Corp., down $1.35, or 2.8 percent, to $47.32.

Costco Wholesale Corp., down $2.50, or 3.4 percent, to $72.16.

BJ Wholesale Club Inc., down 65 cents to $40.43.

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