Block's stock experienced a notable increase following a positive earnings report. The company's CFO highlighted a resurgence in Square's market share and increased user engagement within the Cash App ecosystem. These two core businesses are driving Block's financial performance. The report suggests a successful turnaround for Square and continued growth for Cash App, contributing to investor confidence and the subsequent stock price increase. The company's ability to reignite growth in both platforms is seen as a positive sign for its long-term prospects.