Trade Desk Inc.'s stock experienced a 24-hour plunge of 15.02% during the extended trading session on Wednesday. The significant drop followed the release of the advertising technology company's quarterly financial results.

While Trade Desk reported fourth-quarter results that slightly exceeded analyst expectations, with revenue of $847 million beating estimates and adjusted EPS of $0.59 surpassing the consensus, investors reacted negatively to the company's first-quarter outlook. The company forecast Q1 2026 revenue of at least $678 million, which fell short of the $688.6 million to $689.2 million analysts had anticipated.

The weak guidance comes amid mounting pressure from larger competitors such as Amazon and Google, and reflects a continued growth slowdown. CEO Jeff Green highlighted sustained weakness among some large consumer packaged goods and automotive advertisers, which together account for more than a quarter of the company's business. The Q1 revenue forecast implies year-over-year growth of just 10.1%, a deceleration from the 14.3% growth reported for Q4 2025.