Elon Musk is one IPO away from a stunning Wall Street first

Wall Street keeps a private list of records that almost never move. The biggest bank failure. The longest bull market. The most expensive IPO of all time.

Most of those records are decades old. Saudi Aramco's 2019 listing still holds the crown for the largest initial public offering on record, raising $35.4 billion at a $320 billion valuation, according to Bloomberg.

What sits above that line has always been theoretical. For 25 years, market historians have argued about whether any private company could ever come public at four times the size of Aramco. The answer was usually no, because the only companies big enough were the ones already trading.

That changed on Wednesday, May 20.

The world's richest founder, who already runs the world's most valuable publicly traded automaker, just put his second company on the runway. And if the numbers in the filing hold, he is about to do something no individual has done before.

The company is SpaceX. The filing dropped after the closing bell. And the ticker, SPCX, may end up describing the most consequential market event of this decade.

What SpaceX revealed in its IPO filing

In the late afternoon of May 20, Elon Musk's Space Exploration Technologies Corp. filed its S-1 prospectus publicly with the U.S. Securities and Exchange Commission (SEC). The company chose Nasdaq for its debut under the symbol SPCX, according to Bloomberg, with pricing targeted for June 11 and trading set to begin June 12.

The numbers are undeniable.

SpaceX reported $18.67 billion in revenue for 2025 and $6.58 billion in adjusted EBITDA (earnings before interest, taxes, depreciation, and amortization), according to TipRanks. Q1 2026 alone brought in $4.69 billion in revenue and $1.13 billion in adjusted EBITDA.

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The company is targeting a $1.75 trillion valuation and looking to raise up to $75 billion in the offering, according to TechCrunch. For context, that single raise would more than double the all-time record set by Saudi Aramco.

I ran the SpaceX revenue figure against my notes on the Fortune 500, and a private space company is now generating more annual sales than household names like Hershey, Whirlpool, and Hilton. That is a 24-year-old startup outpacing companies most readers grew up with.

What is funding that growth is also what is bleeding cash. SpaceX spent $3 billion on Starship research and development in 2025 and another $930 million in the first quarter of 2026, according to TechCrunch. The xAI artificial intelligence unit, folded into SpaceX after this year's merger, is still operating at a loss.

Investors are about to decide whether they are buying the rocket business, the satellite business, the AI business, or all three.

Photo by Phillip L Jones on Getty Images

Why SpaceX IPO represents a Wall Street first for Elon Musk

Musk already controls Tesla, the publicly traded automaker that crossed the $1 trillion market-cap threshold in 2021 and has stayed there for most of the years since. If SpaceX prices anywhere near its target valuation, Musk becomes the first founder in U.S. market history to simultaneously chair two distinct, separately listed trillion-dollar public companies.

There is no historical parallel.

Jeff Bezos took Amazon public in 1997 and built it past $1 trillion. His other venture, Blue Origin, remains private.

Bill Gates founded only Microsoft. Steve Jobs ran Apple and then Pixar, but Pixar was acquired by Disney long before approaching trillion-dollar territory.

The bulleted breakdown below shows just how unusual the SpaceX number is when stacked against the rest of the world.

• At $1.75 trillion, SpaceX's IPO target would top the projected 2025 gross domestic product (GDP) of every country except the 12 largest economies, according to International Monetary Fund (IMF) projections.
• The $75 billion raise SpaceX is seeking would more than double Saudi Aramco's record-setting $35.4 billion IPO from 2019, according to Bloomberg.
• SpaceX generated $18.67 billion in 2025 revenue, with the Starlink broadband unit providing the majority of that figure, according to TipRanks.
• Musk's dual-class share structure means he retains majority voting power after the offering, classifying SpaceX as a "controlled company" under Nasdaq rules, according to Bloomberg.

What the SpaceX IPO means for your portfolio

This is where my analysis turns from financial trivia to your statement.

Three things change for the average retail investor the moment SPCX starts trading.

First, every index fund that tracks the Nasdaq will be forced to buy SpaceX in proportion to its market cap. If you own a 401(k) target-date fund, a Nasdaq-100 ETF, or any large-cap U.S. equity exposure, you will own SpaceX, whether you want to or not.

The forced buying tends to support the stock in its early weeks. It also concentrates more of your index in Musk-controlled assets.

Related: Cathie Wood unveils bold new prediction about Elon Musk's SpaceX

Second, the IPO float is going to be unusually small. SpaceX wants to retain the majority of its outstanding stock, so only a sliver of shares will trade publicly relative to the company's total valuation.

Small floats plus heavy index demand have historically meant volatility in both directions. Anyone planning to chase SPCX on day one should know they are buying scarcity, not just stock.

Third, this filing repositions the entire IPO market for 2026. The company is aiming to kick off a roadshow to market the deal on June 8, according to CNBC, with pricing the week after. If SPCX clears its valuation target, every other private giant waiting in the wings - OpenAI, Stripe, Databricks - suddenly has a new reference price for what "big" means. Some will accelerate. Others will quietly delay.

Musk himself, according to the filing, is structured to retain control through super-voting shares and is not selling stock in the offering, Bloomberg noted. He is not cashing out. He is just unlocking the option.

What to watch before SpaceX starts trading

The coming days will be loud.

The SEC review window remains the main variable. If the prospectus clears without major revisions, the roadshow opens in early June, pricing lands the week after, and SPCX trades for the first time on or about June 12.

Any one of those dates can slip, and the filing itself warns that delivery is pending SEC approval and market conditions.

What I will be watching is not the headline valuation. It is the float. The smaller the public allocation, the more violent the early price discovery, and the more carefully retail investors should size their orders.

A founder running two trillion-dollar public companies at the same time is not just a personal milestone for Musk. It is a stress test for what shareholder accountability looks like when one person sits on both sides of that much voting power.

The launch window opens June 12. Strap in.

Related: SpaceX's long-anticipated IPO filing is out now - here are the highlights

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This story was originally published May 21, 2026 at 8:07 AM.