Shares of discount retail chain Dollar General (DG 0.18%) haven't been fun to hold in recent years. The stock plunged 45% in 2023 and followed that up with another 44% drop in 2024.But things may finally be looking up for shareholders. As of this writing, Dollar General stock is up 31% year to date, placing it among the best performers of the S&P 500 (^GSPC -0.01%) in 2025.One chart tells Dollar General's story. The stock was a strong performer in past years, thanks to sales growth, which led to increased e ...