York Space Systems began trading on the New York Stock Exchange on January 29, 2026, with shares opening above their initial offering level and closing the session up more than 11%. The market capitalisation at debut stood at approximately $4.75 billion, reflecting strong investor appetite for a modern space and defense prime focused on integrated satellite solutions.

The company’s IPO featured an upsized allocation of 18.5 million shares, with underwriters granted a 30-day option to purchase an additional 2.775 million shares. Lead bookrunners included Goldman Sachs, Jefferies and Wells Fargo Securities, supported by joint bookrunners J.P. Morgan and Citigroup, and co-managers Canaccord Genuity, Needham & Company and Academy Securities. The offering closed on January 30, 2026, following customary SEC clearance and standard closing conditions.

Since its founding in Denver, York has delivered 21 low-Earth orbit satellites under contract with the U.S. Space Development Agency, completing the most recent batch in September 2025. CEO Dirk Wallinger highlighted the company’s proprietary end-to-end hardware and software stack, positioning York to contribute systems interoperability for national defense initiatives such as the Golden Dome program. With a backlog of government and commercial missions, York plans to scale production capacity in 2026 to meet accelerating demand for rapid, cost-efficient space deployment.