StocksMedium•8 November 2026•
1 min read
Firefly Aerospace Surges 36.8% on $1.3B Engine Deal with AST SpaceMobile
Key Facts
1Firefly Aerospace shares surged 36.8%, marking its largest single-day gain ever.
2The $1.3 billion deal includes an $800 million upfront license fee.
3Firefly will supply engines and grant AST SpaceMobile a permanent license to manufacture Miranda and Vira engines.
Firefly Aerospace shares surged 36.8%, marking its largest single-day gain ever, following the disclosure of a $1.3 billion deal with AST SpaceMobile. Foreign Policy Journal reported that the agreement includes an $800 million upfront license fee, with Firefly set to supply engines and grant AST SpaceMobile a permanent license to manufacture Miranda and Vira engines.
FLY closed at $20.76 on November 6, 2026, while ASTS experienced volatile trading, hitting a fresh 52-week low of $27.58 before closing at $32.33 on the same date. According to the deal terms, AST commits an additional $250 million for engines and another $250 million for engineering support over three years.