BigBear.ai Holdings' stock plummeted 6.10% in pre-market trading on Tuesday. The sharp decline follows the company's release of its fourth-quarter 2025 financial results, which revealed significant revenue shortfalls and a weaker-than-expected outlook for the coming year.

The AI solutions provider reported quarterly revenue of $27.3 million, missing analyst consensus estimates of approximately $33.3 million by about 18%. Revenue fell 38% compared to the same period last year, which the company attributed primarily to lower volume on Army programs. Furthermore, the quarterly gross margin contracted sharply to 20.3% from 37.4% in the prior-year period, due to the absence of significant one-time, high-margin contracts that boosted results previously.

While the company reported a narrower-than-expected loss per share, investors focused on the substantial revenue miss and declining profitability. Adding to concerns, BigBear.ai's full-year 2026 revenue guidance of $135 million to $165 million came in below the consensus estimate, signaling potential challenges for near-term growth despite the company's highlighted acquisitions and strengthened cash position.