Gartner's stock experienced a significant intraday plummet of 28.86% on Tuesday, following the release of its fourth-quarter financial results and 2026 guidance.

The sharp decline was driven by the company's disappointing outlook for 2026, with both revenue and earnings forecasts falling below Wall Street expectations. Gartner expects total revenue of $6.46 billion for 2026, below analyst forecasts of $6.71 billion, and projects adjusted earnings of $12.30 per share, compared to expectations of $13.54.

Additionally, the company reported a 39% decline in fourth-quarter net income to $242 million, with revenue at its consulting segment falling approximately 13% year-over-year. Analysts attribute the weak performance to enterprises scaling back spending on advisory services amid economic headwinds and increased use of in-house AI tools.