Elon Musk Sold Investors The Future. Now SpaceX Has To Build It.

SpaceX is trading up on its first full day on the public markets. Here's what it has to do to maintain the momentum.

Jun 15, 2026

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On its first full day of trading, SpaceX is building on its massive IPO’s momentum. The company is up more than 14% on Monday, hitting a market cap above $2.4 trillion, which places it firmly within the ten largest companies in the world.

Now comes the hard part.

To maintain its momentum and lofty valuation, SpaceX will have to turn projections into real …

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A guest post by

Marty Swant

I'm a journalist covering tech/marketing/policy for NYT, Fast Company, Inc., Big Technology, Transformer, & more. (Previously was on staff at Digiday, Forbes, Adweek, and the AP.) Born in MN, I’m now in NYC with my wife Emily & our dog, Willoughby.