The Trade Desk experienced a dramatic 68% decline in its stock value over 2025, driven largely by intensifying competition from Amazon’s rapidly expanding adtech platform. Industry estimates suggest The Trade Desk’s share of the programmatic display market fell by nearly 4 percentage points during the year, as Amazon leveraged first-party retailer data and aggressive pricing to win budgets from key agency clients. Despite overall adtech sector growth of 12% in 2025, The Trade Desk’s growth rate slowed to 6%, underscoring the impact of heightened rivalry and shifting client preferences.

In the most recent trading session, The Trade Desk’s shares moved down by 1.96% even as broader indexes gained ground, reflecting lingering investor caution. The stock now trades approximately 75% below its all-time high, presenting a valuation at roughly 15 times consensus forward earnings. This multiple sits below the adtech industry average of 18, suggesting the market is assigning a risk discount for execution challenges and competitive headwinds.

Despite the selloff, The Trade Desk delivered solid top-line momentum in Q3, posting 18% year-over-year revenue growth driven by strong performance in connected TV and advanced audience targeting products. Management projects full-year revenue growth of 16% in 2026, supported by ongoing platform enhancements and expansion into new international markets. Analysts note that if The Trade Desk can stabilize its market share and reinvigorate higher-margin offerings, it could narrow the current valuation gap to peers.