Reddit's Revenue Surge Overtakes The Trade Desk

Reddit (RDDT) has transformed from a niche online community platform into a serious digital advertising player. In Q3 2026, Reddit reported revenue of $895 million, a 53% year-over-year increase, marking the first time its quarterly revenue surpassed that of longtime ad-tech leader The Trade Desk. This milestone was driven by a 12% rise in daily active unique users to 130.3 million, as well as successful initiatives like a logged-in experience test and an expanded cloud partnership with Google Cloud through 2029.

In contrast, The Trade Desk (TTD) is struggling to maintain momentum. Its revenue growth has decelerated sharply from 22% year-over-year in Q4 2024 to just 3% in Q2 2026, and management expects a year-over-year decline in Q3 2026. The company announced a 15% workforce reduction in September 2026 and faced negative headlines involving its former finance director. These challenges come as advertisers gain more options, including Netflix's growing ad-supported tier and Reddit's rising appeal.

The revenue comparison table illustrates the shifting landscape: Reddit's quarterly revenue climbed from $427.7 million in Q4 2024 to $895 million in Q3 2026, while The Trade Desk's revenue grew from $741 million to $846.8 million in Q4 2025 but then declined to $715.1 million in Q2 2026. This divergence highlights Reddit's accelerating growth versus The Trade Desk's stagnation.

Reddit's addition to the S&P 500 in August 2026 further validates its scale and profitability, attracting index funds and institutional investors. Meanwhile, The Trade Desk's restructuring and regulatory issues add uncertainty to its outlook.

Revenue growth is a key indicator of a company's health and future prospects. Reddit's ability to grow revenue at over 50% while expanding its user base demonstrates strong product-market fit and increasing advertiser trust. This growth is likely to support a premium valuation and could lead to positive earnings surprises if the trend continues.

For The Trade Desk, the deceleration is concerning because it suggests market share loss in a competitive industry. The workforce reduction, while potentially improving efficiency, also signals that management is bracing for slower growth. Investors may worry that The Trade Desk's best days are behind it, especially as rivals like Netflix and Reddit capture more ad dollars.

The competitive dynamics also matter for the broader digital advertising ecosystem. Reddit's success shows that platforms with engaged, passion-driven communities can carve out a profitable niche. The Trade Desk's struggles highlight the risk of relying solely on a self-service platform when larger walled gardens and new entrants offer integrated solutions.

Looking ahead, Reddit's international expansion and logged-in experience tests could further monetize its user base, while The Trade Desk needs to innovate to regain its growth trajectory. The market will be watching upcoming earnings closely to see if these trends persist.