The S&P 500 (SNPINDEX: ^GSPC) has basically gone nowhere so far in 2025, but it has done it in an exciting way. The market's correction, however, didn't seem to have an impact on Dollar General (DG 0.59%) shares, which rose while the S&P 500 index was falling. At the time of this writing, Dollar General is up around 15% while the market is flat.Before you rush out and buy outperforming Dollar General stock, you need to understand this one overlooked "growth" story.What does Dollar General do?Dollar General ...