The streaming TV platform specialist is showing signs of stabilization, but the competitive environment remains challenging.After a volatile 2024, Roku (ROKU -0.03%) shares have rebounded in 2025, rising more than 35% year to date as investors respond to signs of improved execution and a strengthening connected-TV advertising (CTV) market. The company's most recent report highlighted accelerating platform growth, increased engagement, and improved profitability, helping to drive renewed momentum in the stoc ...