SpaceX is laying the groundwork for a potential initial public offering that could rank among the largest and most consequential market debuts in modern financial history, as the company's valuation surges on the back of rapid growth at its satellite internet unit, Starlink, according to people familiar with the plans.

The privately held aerospace company, founded and controlled by Elon Musk, has begun internal preparations and early discussions with financial advisers about a possible stock market listing as early as 2026. Any public offering would come after years of resistance by Musk, who had previously argued that public market pressures could interfere with the company's long-term mission.

The timing reflects a sharp shift in SpaceX's financial profile. Once defined primarily by launch contracts and government partnerships, the company is now increasingly driven by Starlink, its global satellite broadband network. The service has expanded rapidly across remote regions, maritime shipping, aviation and defense-related communications, generating billions of dollars in annual revenue and providing SpaceX with a recurring cash stream rare in the capital-intensive space sector.

People familiar with the company's finances say Starlink's performance has reshaped investor perceptions of SpaceX's value. Secondary-market transactions in recent months have implied valuations approaching levels typically associated with the world's largest technology companies, prompting renewed consideration of a public listing as a way to raise capital at scale.

SpaceX remains privately controlled, with Musk estimated to own roughly 42% of the company. A public offering at the valuation levels now being discussed would significantly increase his personal wealth, already the largest in the world, and further entrench his influence across technology, transportation and communications industries.

The move would also mark a strategic pivot for Musk, who has long insisted that SpaceX would not go public until it achieved routine interplanetary travel. The enormous capital requirements associated with the Starship rocket program, combined with the ongoing expansion and maintenance costs of Starlink's satellite constellation, have altered that calculus, according to people briefed on internal discussions.

For investors, a SpaceX IPO would represent rare access to a company that has fundamentally reshaped both the commercial launch industry and global connectivity markets. Demand is expected to be intense, though analysts caution that the risks remain substantial.

Those risks include the inherent unpredictability of rocket launches, regulatory scrutiny surrounding satellite operations, and the volatility that has accompanied Musk's leadership at publicly traded companies in the past. SpaceX's scale and technological edge may mitigate some of those concerns, but they do not eliminate them.