Datadog Stock Plummets After Weak Guidance Overpowers Strong Earnings and AI Momentum

Datadog shares dropped 14% despite strong third-quarter results and rising AI adoption, as the company’s fourth-quarter outlook signaled slowing growth and declining margins. The decline was largely driven by reduced usage from its largest customer, raising concerns about near-term sustainability. Investors prioritized cautious guidance over recent performance gains.

On November 4, 2026, Datadog (DDOG) reported third-quarter revenue of $1.2 billion—35% higher than the same period the prior year—and adjusted earnings of $0.81 per share, surpassing analyst expectations of $0.64. Despite these strong results and a raised full-year revenue outlook to $4.52 billion (approximately 32% growth), the company’s stock dropped nearly 14%. The decline was driven by its fourth-quarter guidance, which projected revenue between $1.19 billion and $1.20 billion—essentially flat sequentially—despite a still-robust 25–26% year-over-year increase. This slowdown was attributed to reduced usage from Datadog’s largest customer, an unnamed AI company, which is now operating at its minimum contractual commitment level. The company also forecasted a decline in adjusted operating margin to 24%, down from 28% in Q3, signaling margin pressure despite continued growth among other large customers and expanding AI adoption.

This development follows a period of intense investor enthusiasm: Datadog shares had risen 62% in 2026 through the prior week, reflecting high expectations for sustained momentum. The market’s reaction underscores how investors now prioritize forward-looking guidance over past performance, especially when growth is tied to a single client. Management, including CFO David Obstler and CEO Olivier Pomel, emphasized that AI-driven demand remains strong across Datadog’s broader customer base, with non-AI customers showing accelerating revenue growth for