NFLX vs. ROKU: Which Ad-Supported Streaming Stock is the Better Buy?

Both Netflix and Roku are strategically pivoting to ad-supported models, with Netflix demonstrating superior execution and investment appeal. Netflix reported robust Q2 2025 revenues of $11.08 billion (+16% YoY) and a 34.1% operating margin, fueled by its rapidly expanding ad-supported tier, which now boasts 94 million MAUs and is projected to double ad revenues again this year, alongside its dominant content slate and 301.6 million global subscribers. Conversely, while Roku maintains North American platform leadership with Q2 revenues of $1.11 billion (+15% YoY), it contends with declining hardware sales and persistent profitability challenges, positioning it as a less compelling immediate investment compared to Netflix's proven monetization and scale.

Analysis

Netflix (NFLX) and Roku (ROKU) are both strategically pivoting to advertising-based models, but their operational and financial trajectories are markedly different. Netflix is demonstrating superior execution, with Q2 revenues growing 16% year-over-year to $11.08 billion and operating margins expanding to a robust 34.1%. The company's ad-supported tier has scaled rapidly to 94 million monthly active users, with ad revenues expected to double for the second consecutive year, supporting an upward revision of its full-year revenue guidance to between $44.8 billion and $45.2 billion. This financial strength is underpinned by a dominant content slate and a massive global subscriber base of 301.6 million. In contrast, while Roku maintains its leadership as a streaming platform operator in North America and grew Q2 revenue by 15% YoY to $1.11 billion, it faces significant headwinds. The company remains unprofitable, posting a $105.96 million loss over the last twelve months and a negative 4.04% operating margin, while its foundational hardware business saw a 6% YoY sales decline. Although Roku projects achieving positive operating income in Q4 2025, its valuation (2.61x P/S) is based on this turnaround potential rather than current profitability, unlike Netflix's premium valuation (10.53x P/S) which is supported by strong, consistent earnings and a 31.42% projected increase in 2025 EPS.

Key Decisions for Investors

• Given Netflix's proven ability to monetize its content through both subscriptions and a rapidly growing advertising segment, alongside strong profitability and a 35.1% year-to-date stock appreciation, investors could consider the stock a superior vehicle for exposure to the streaming sector despite its premium valuation.
• For Roku, the investment case is a turnaround story contingent on achieving its guidance for operating profitability in Q4 2025; investors should adopt a cautious, 'wait-and-see' approach, monitoring platform revenue growth and margin improvements before committing new capital.
• The significant disparity in fundamentals and valuation suggests that Netflix's integrated model of content creation and distribution provides a more durable competitive advantage and clearer path to value creation compared to Roku's hardware-reliant platform, which faces commoditization and intense competition from larger tech players.