AST SpaceMobile (NASDAQ: ASTS) has announced a formal joint venture with Rakuten to construct a direct-to-mobile satellite network across Japan.

The partnership comes alongside a confirmed ¥926 million in Japanese government subsidies to support the network’s build-out.

The deal represents a significant step forward for AST SpaceMobile as it works to commercialize its next-generation BlueBird satellites in one of the world’s most competitive telecommunications markets.

Government backing of this scale provides a meaningful financial cushion as the company advances its infrastructure deployment timeline in Japan.

The stock was trading at $85.13 following the announcement, sitting approximately 4.5% above the consensus analyst price target of $81.47.

That analyst target sits within a notably wide range of $41.20 to $108.00, reflecting the degree of uncertainty investors and analysts attach to AST SpaceMobile’s execution prospects.

Despite a 29.7% gain over the prior week and an 86.7% rise over the past year, the stock has fallen 28.0% over the past 30 days, underscoring the sharp volatility surrounding the company.

The three-year return has been described as very large, drawing sustained attention from momentum-focused investors watching the company’s commercial progress.

One internal valuation estimate flags the stock as trading roughly 47.1% below fair value, though the company remains loss-making and carries a highly volatile share price.

Analysts and investors will now focus closely on execution milestones, including BlueBird satellite deployment schedules and early revenue generation from the Japan network.

The Rakuten joint venture and government subsidies give AST SpaceMobile a clearer structural foundation, but translating that support into operational coverage will be the critical test ahead.

How quickly AST SpaceMobile can demonstrate tangible progress in Japan will also matter in the context of intensifying competition across the global direct-to-mobile satellite sector.