Shares of Dollar General (NYSE:DG) took a 9% hit on Tuesday after the company hosed down its guidance for the full fiscal year. The report follows disappointing results last month out of Wal-Mart (NYSE:WMT) and Target (NYSE:TGT).

In this video, longtime Fool contributor Rick Munarriz explains why this is a problematic trend -- and why Dollar General is actually holding up better than Wal-Mart and Target despite the more pronounced sell-off.

Longtime Fool contributor Rick Munarriz has no position in any stocks mentioned. The Motley Fool has no position in any of the stocks mentioned. Try any of our Foolish newsletter services free for 30 days. We Fools may not all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. The Motley Fool has a disclosure policy.