The Trade Desk is the dominant independent DSP for the open internet, benefiting from the secular shift of linear TV budgets to CTV (~50% of revenue, growing 20%+ YoY) and the expansion of retail media. However, growth is decelerating (18% FY2025, guided ~10% Q1 2026), multiple agency holdcos are auditing or reducing TTD spend (Publicis advisory, Omnicom audit, WPP/Dentsu OpenPath pullback), and Amazon DSP is aggressively taking share with 1% take rates vs TTD's ~20%. The Ventura CTV OS initiative is ambitious but unproven. At ~$22 (~15x CY2026E non-GAAP EPS), the stock prices in significant growth deceleration — upside exists if CTV secular growth and the Google antitrust divestiture re-accelerate open-internet spend, but the agency trust crisis is a material near-term headwind.