United States Antimony Corp's stock plummeted 8.15% during intraday trading on Tuesday, driven by a severe earnings disappointment and broader sector weakness.

The sharp decline followed the company's release of deeply disappointing first-quarter results. United States Antimony reported a loss per share of $0.08, which was significantly worse than the analyst consensus estimate of a $0.02 loss. Revenue totaled just $6.84 million, falling year-over-year and missing the $14.8 million analyst estimate by more than half. Furthermore, the company's decision to merely reaffirm, rather than raise, its full-year revenue guidance of approximately $125 million disappointed investors seeking stronger growth signals.

The selloff was amplified by systematic pressure across the Diversified Metals & Mining sector, with several major peers also trading lower. This overshadowed recent company-specific news regarding positive developments for its gold-antimony project, which is in a fast-track permitting regime with drilling currently underway.