U.S. Antimony's 11% Rally Rests on Defense Deliveries

United States Antimony's 11% share-price jump on October 19 stood out because nearby critical-minerals stocks moved the other way. UAMY rose to $3.18 while USA Rare Earth fell 3%, Critical Metals dropped 4%, the VanEck Rare Earth and Strategic Metals ETF slipped 0.9%, and the S&P 500 proxy SPY gained 0.8%. That was a one-day market snapshot, not proof that the businesses share the same economics.

The distinction matters. Antimony is not a rare-earth element, and U.S. Antimony's most important near-term catalyst is a Defense Logistics Agency contract rather than a magnet project. The five-year, sole-source agreement has a maximum value of $245 million and calls for 99.65%-pure antimony ingots for the National Defense Stockpile through September 2030. It is an indefinite-delivery, indefinite-quantity contract, so the ceiling is not guaranteed revenue. Pricing is set when delivery orders are placed, and the company recognizes revenue only after the government formally accepts a shipment.

Execution has begun, but the scale is still modest beside the headline ceiling. U.S. Antimony shipped about 82,000 pounds in June, and the DLA accepted the ingots in July, allowing the company to recognize roughly $2.6 million in third-quarter revenue. Management said in August that cumulative delivery orders had reached about $57.3 million. That is evidence of demand, but investors still need to see how quickly the company converts those orders into accepted shipments and cash.

The balance sheet shows both preparation and strain. Inventory rose to $21.6 million at June 30 from $12.5 million at the end of 2025 as the company accumulated feedstock for government work. Working capital reached $70 million, but operating activities used $20.7 million of cash during the first half. U.S. Antimony also lowered 2026 revenue guidance to $60 million to $75 million from $125 million. It cited lower antimony prices, slower delivery timing tied to its Thompson Falls expansion and government coordination, and a revised production schedule.

Price sensitivity is the central counterweight to the defense story. The company said spot antimony was about $10.50 per pound in the second quarter, versus more than $28 when its original guidance was set in late 2025. Lower input prices can help procurement, but selling prices also move with the market under the DLA arrangement. Management's claim that it can source material at attractive prices therefore needs to be tested against realized margins, not taken from the contract ceiling alone.

Four grant applications totaling $275 million were still pending in August. They could help fund antimony, tungsten and hydrometallurgical projects, but an application is not an award and no grant value is included in the investment case here.

Additional supply could help throughput. In August, management said the first shipment from a Bolivian hydrometallurgical facility was on the water and that the facility was expected to ramp toward 150 metric tons a month. That was a target, not current production. The Thompson Falls expansion and the Radersburg mill also need to turn inventory into finished metal at a reliable pace.

The October rally reflected a real strategic difference: U.S. Antimony has an operating business and a government customer, while several peers are still building mines or magnet capacity. But the next decisive evidence is operational. Accepted DLA volumes, realized prices, gross margin and operating cash flow will show whether the defense contract is becoming durable earnings rather than remaining a large nominal ceiling.