Filtronic Hits New Highs as SpaceX IPO Hype and Defense Contracts Converge

Filtronic shares hit all-time high as SpaceX supply deal and 2026 IPO prospects drive momentum, but high valuation and insider selling raise caution.

The British radio frequency specialist has become a magnet for momentum traders, with its shares surging more than 20% in a single session to touch an all-time high of 350 pence. Trading volumes exploded to nearly ten times their normal level as investors piled in, driven by a potent mix of existing strategic partnerships and fresh catalysts on the horizon.

At the heart of the rally lies Filtronic’s five-year supply agreement with SpaceX, a relationship that has already yielded a record order book. But the real prize, market participants believe, is the planned initial public offering of Elon Musk’s space venture in the summer of 2026. An IPO of that magnitude would pour billions into satellite infrastructure, promising a sustained pipeline of work for component suppliers like Filtronic.

The company’s financial performance has already demonstrated the strength of this tailwind. For the fiscal year 2025, Filtronic more than doubled its revenue to £56.3 million from £25.4 million a year earlier, while operating profit rose to £13.4 million. Management has guided for stable revenue of around £55 million in fiscal 2026, suggesting the growth trajectory is consolidating rather than fading.

Beyond the SpaceX connection, Filtronic has been quietly building a diversified order book. A major $8 million contract with a US partner for advanced satellite communications technology has been secured, alongside a £400,000 deal with a European defense customer, with deliveries scheduled for fiscal 2027. These wins underscore the global appetite for high-reliability components in both orbital and defense applications.

Yet the valuation has become a point of contention. The stock now trades at a price-to-earnings multiple of 84, and the relative strength index has climbed to nearly 79, signaling overbought conditions. Berenberg, which rates the shares a “Buy,” recently lifted its price target sharply from 213 pence to 360 pence — a level that still sits above the current market price of 287 pence. The previous target had been well below the stock’s recent highs, highlighting how quickly sentiment has shifted.

Insider activity adds another layer of caution. Over the past period, company insiders have sold a net total of approximately 405,000 shares, a move that often raises eyebrows among retail investors. Meanwhile, the shareholder base remains concentrated, with roughly 62% of shares held outside free float, limiting liquidity.

Currency exposure is another factor to watch. As a growing portion of Filtronic’s business is conducted in US dollars, fluctuations in the greenback could impact reported earnings. The company also faces the challenge of scaling its manufacturing capacity to match the rapid pace of order intake, with production cycles in this sector typically spanning one to three years.

For now, all eyes are on the summer of 2026 and the SpaceX IPO. If the listing proceeds as anticipated, Filtronic could see its order book swell further. Until then, the stock’s trajectory will depend on whether the company can deliver on its operational promises — and whether the market’s enthusiasm can be sustained at such elevated multiples.