SpaceX shares rallied for a third consecutive day on Tuesday, pushing the company's market capitalization above that of Amazon [1, 2].

This surge marks a rapid ascent for the company following its transition to a public entity. The climb reflects intense investor confidence in the company's ability to scale its commercial operations and integrate artificial intelligence into its business model.

The company's market capitalization reached $2.66 trillion [2]. During the rally, SpaceX briefly surpassed Microsoft to become the fourth-largest company by valuation [1, 2]. This growth follows a debut on the Nasdaq exchange on June 14, 2026 [2, 3].

Since that debut, the stock has increased by approximately 50% [2]. Market analysts said the momentum is due to a new partnership with the AI firm Cursor [3]. Additionally, broader market confidence improved following clarifications regarding a U.S.–Iran deal [1].

The positive movement for SpaceX occurred alongside a general lift in the markets. The Dow Jones Industrial Average gained 0.8% on Tuesday [3].

However, the rally faced a correction shortly after the peak. Reports said SpaceX stock declined by 5% on June 17, 2026 [4].

SpaceX shares rallied for a third consecutive day on Tuesday, pushing the company's market capitalization above that of Amazon

The rapid valuation surge of SpaceX suggests that investors are pricing the company not just as a launch provider, but as a critical infrastructure player in the AI and global connectivity sectors. By surpassing established giants like Amazon, SpaceX is signaling a shift in market dominance toward companies that control both physical hardware and advanced software integration.