Filtronic's SpaceX Jackpot and Defence Push Are Building a Bigger Business — But Can One Customer Dependency Sustain the Rally?

Shares of Filtronic shifted higher this week, climbing +9.8% over five sessions to $3.25, as investors digested a flurry of contract wins that collectively paint the picture of a small UK radio-frequency specialist punching well above its weight in the booming satellite economy. The question now: whether the order book can diversify fast enough to justify the run.

A $68 Million SpaceX Deal Locks In Two Years of Revenue

Filtronic secured a $68.1 million follow-on order from SpaceX in early October — its largest ever — to supply power amplifiers for Starlink ground stations.

It follows a $62.5 million order from August 2025 , bringing the combined SpaceX relationship to roughly $130 million. Broker Cavendish says this single contract covers over 90% of Filtronic's projected FY2028 revenue — extraordinary visibility, but also a stark concentration risk. If SpaceX ever slows orders, the revenue cliff would be severe.

New Satellite and Defence Wins Signal Diversification — At a Small Scale

The October 30 trading update included an initial $0.3 million development order for amplifiers used in geostationary satellite ground stations — Filtronic's first GEO contract. It also secured three new defence contracts worth £2.1 million for airborne radar systems , plus a £2 million grant from UK Defence Innovation. These wins matter strategically but are tiny relative to SpaceX's dominance of the order book.

Analyst Forecasts Imply Fast Growth — If Execution Holds

Cavendish forecasts revenue of £60 million in FY2027, rising 25% to £75 million the following year.

Adjusted pre-tax profit margins are expected to hold at 15%, with net cash growing from £10.8 million to £14.4 million by May 2028.

That implies adjusted EBITDA of £17 million in FY2028 — a meaningful step-up for a company that posted just £11.3 million last year.

The Factory Bet Hints at Much Bigger Ambitions

Filtronic's new Sedgefield headquarters can support a potential £200 million revenue operation — more than three times current sales. The company has also completed a new 200-watt amplifier system, ten times more powerful than its earlier product , targeting a potential market worth $3 billion over ten years. That's the long-term prize, but today's stock price is being carried overwhelmingly by one customer in Hawthorne, California.