Key Takeaways Roku's Q3 results showed rising platform revenues, higher gross profit and stronger EBITDA.Q4 guidance targets 12% revenue growth with 52% platform gross margin.oku's expanding engagement, ad momentum and subscription growth support improving profitability.Roku (ROKU) is entering a stronger phase of its turnaround as improving margins and disciplined execution reshape expectations for its performance. In the third quarter of 2025, platform revenues grew 17% year over year, gross profit increas ...