1. Volatile Stocks to Watch: Zumiez, European Wax Center, and Grid Dynamics 2. Avoiding Zumiez and European Wax Center: Reasons for Caution 3. Grid Dynamics: A Stock with Upside Potential

Zumiez and European Wax Center are two volatile stocks with potential drawbacks, while Grid Dynamics is a stock worth watching due to its impressive revenue growth and outperforming earnings per share. Zumiez has a suboptimal cost structure and falling EPS, while European Wax Center has lagging same-store sales and returns on capital growing as management invests in worthwhile ventures. Grid Dynamics, on the other hand, has 29.1% annual revenue growth and 22.2% annual EPS growth over the last five years.