Key PointsKroger's 8% drop reflects market fear, not deteriorating fundamentals or weakened long-term prospects.New leadership, digital growth, and private-label expansion support Kroger's long-term investment thesis.10 stocks we like better than Kroger › Last Thursday was a rough day for Kroger (NYSE: KR) shareholders. The stock fell nearly 8% -- its largest single-day drop in close to five years -- after the grocery chain's first-quarter resul…