Wal-Mart

(WMT) - Get Report

shares slipped Monday even though the retail giant posted solid March sales.

Wal-Mart said same-store sales rose 4.2% in the period ended April 1, roughly as expected.

The company last week said Easter sales were lower than a year ago, while the launch of spring merchandise was delayed. Despite that, the company stuck to its previous guidance, saying it still expected to meet or exceed February's 4.1% increase.

In the premarket, shares were trading at $48.56, down 43 cents, or 0.9%.