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Firefly Aerospace Stock Jumps 37% After $1.3B Engine Deal
Why did Firefly Aerospace stock jump 37%?
Firefly Aerospace (FLY) stock rose 36.8% on Friday to $20.76 after announcing a $1.3 billion rocket-engine deal with AST SpaceMobile, which nearly equals its $1.5 billion backlog of signed work.
Key numbers
| FLY share price (Friday close) | $20.76+36.8% |
|---|---|
| AST SpaceMobile engine deal | >$1.3B36 engines, 3 years |
| Backlog of signed work (June 2026) | $1.5Bdeal adds nearly as much |
| Q3 revenue forecast (per [4]) | $106.3Mvs $117.7M in Q2 |
| 2026 revenue guidance | $420M–$450Mset Aug 11 |
| Options-implied earnings move (per [4]) | ±16.3%either direction |
What happened
Firefly Aerospace (FLY) stock rose 36.8% on Friday to $20.76 after announcing a $1.3 billion rocket-engine deal with AST SpaceMobile, which nearly equals its $1.5 billion backlog of signed work. The deal covers 36 rocket engines over three years, and AST will pay in cash and AST shares. On Saturday, NASA added Firefly as an approved vendor for its moon-delivery program, which has a $10 billion maximum value but no guaranteed money for Firefly. Firefly reports third-quarter results Tuesday after the market closes.
Why it matters
Firefly Aerospace builds rockets and moon landers, and this deal adds almost as much future work as it had already signed up for. More contracted work can mean more sales later, but the stock is still well below its May high of $58.81, so investors are still weighing the risks. Tuesday's results will show how fast sales are really growing.
Who this affects
- MarketbullishMedium impact
- Space-stock investors saw a broad rally on Friday.
- CompanybullishHigh impact
- Firefly shareholders gain; the deal adds sales but needs delivery.
- CompetitorsbullishMedium impact
- Intuitive Machines and Rocket Lab also rallied, 22% and 15.4%.
- IndustrybullishMedium impact
- AST's own rocket plan creates new demand for engine makers.
Firefly Aerospace vs Rocket Lab, AST SpaceMobile, Intuitive Machines
How we got here
Firefly reports record Q2 revenue of $117.7M and sets 2026 revenue guidance of $420M–$450M.
Firefly signs $1.3B+ engine deal with AST SpaceMobile; shares close up 36.8% at $20.76.
NASA onboards Firefly as a vendor in its $10B CLPS 2 lunar delivery contract.
Shares trade near $23.72, up another 14.3%, ahead of earnings.
What to watch
- Q3 results versus the $106.3M revenue forecast, plus any change to 2026 guidance2026-11-10
- Options imply a 16.3% stock swing after earnings in either direction2026-11-11
- Which CLPS 2 moon missions NASA opens for competition, and whether Firefly wins anyQ1 2027
Educational content only. Not investment advice.
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