SpaceX is finally going public. Here's what it actually means.

This Week in Private Markets

The private markets have spent years playing a long game. This week, the board cleared.

SpaceX is preparing to file its IPO prospectus — reportedly as soon as this week, but most likely next, (hey Elon, it’s Friday!) — targeting a June listing at a valuation of roughly $1.75 trillion, per reporting from The Information and Bloomberg. The expected raise of more than $75 billion would dwarf Saudi Aramco's $29.4 billion offering in 2019, the current record. If it closes near target, SpaceX would immediately rank among the six most valuable public companies on earth.

For secondary market participants, this is the inflection point they've been waiting for. SpaceX has been one of the most actively traded names in private markets for years. When the S-1 drops, it will be the most closely read financial document Wall Street has seen in a decade — and the first real window into Starlink's unit economics.

The Big Story: SpaceX Plans the Largest IPO in History

SpaceX has been valued at many things over the past two years. The number that matters now is $1.75 trillion.

Following its February merger with xAI — which combined Musk's rocket and satellite business with his AI venture — SpaceX has been racing toward a filing that would formalize what private markets have been pricing in for months. The prospectus is expected this week or early next, with a June listing on the horizon.

A few things investors should understand before the S-1 lands:

The Starlink story is the whole story. By the end of 2025, Starlink had reached an estimated 9.2 million subscribers and roughly $10 billion in revenue. Analysts project that figure could approach $24 billion in 2026. The xAI merger adds an AI infrastructure layer — orbital data centers, Grok integration — that's contributed to the valuation jump from $800 billion (December 2025) to $1.75 trillion today.

Musk is reportedly pushing for an unusually large retail allocation. Per Reuters, he's seeking to make up to 30% of shares available to retail investors at IPO — roughly 3-6x the typical range. If accurate, this would be one of the most significant structural changes to IPO mechanics in years.

Secondary holders are watching lock-up terms closely. SpaceX has historically managed employee and investor liquidity through bi-annual tender offers rather than primary rounds. The IPO will change that dynamic. How long early employees and secondary buyers must hold post-listing will shape the near-term supply picture.

One caveat on the valuation: the S-1 will be the first time the market gets to scrutinize SpaceX's actual margin structure. The xAI integration adds complexity — the SEC is reportedly scrutinizing the merger's disclosure implications. The $1.75 trillion number presupposes clean financials and a favorable market window. Neither is guaranteed.

Anthropic Eyes a Q4 IPO — And Bankers Are Expecting $60B+

The same week SpaceX signaled its filing, The Information reported that Anthropic executives have discussed going public as soon as Q4 2026. Bankers vying for the mandate reportedly expect the offering to raise more than $60 billion.

For context: Anthropic closed a $30 billion round at a $380 billion valuation in February. It's projecting roughly $26 billion in annualized revenue by the end of this year. Enterprise customers now number 300,000+, with large accounts (over $100K run-rate) reportedly growing nearly 7x in the past year.

The competitive dynamic is worth noting. OpenAI is also eyeing a public listing, with some advisors pointing to late 2026 or 2027. Kalshi prediction markets currently give Anthropic a 72% probability of going public before OpenAI. Both companies need the capital — frontier model training costs are accelerating faster than revenue in the near term — but an IPO also provides something else: a public market comparable. Right now, there's no clean benchmark for what an AI lab is worth as a going concern. Whoever files first sets the frame.

What it means for secondary holders: Anthropic secondaries have been actively trading. An IPO would trigger a significant liquidity event for early employees and investors who've been waiting years. Watch for tender offer activity in the months before any S-1 filing — historically, companies use pre-IPO tenders to manage cap table ahead of the roadshow.

Defense AI's Capital Moment: Shield AI at $12.7B

The week's third major story came from a different sector, but the underlying dynamic is the same: private capital flowing into companies building AI-native infrastructure.

Shield AI raised $2 billion — $1.5 billion in Series G equity led by Advent International, and $500 million in preferred financing from Blackstone — at a $12.7 billion post-money valuation. That's more than double its valuation from a year ago and nearly five times where it stood in late 2023.

Shield AI builds autonomous AI pilots — software that can fly aircraft in GPS-denied, communications-degraded environments where human pilots can't operate. Its Hivemind system has been deployed on 26 classes of vehicles, including F-16s. The U.S. Air Force recently selected it as a mission autonomy provider for Collaborative Combat Aircraft.

The raise also funds an acquisition: Aechelon Technology, a defense simulation software company whose technology underpins how the U.S. military trains pilots and tests aircraft in synthetic environments. The combination deepens Shield AI's "train in simulation, deploy in the field" thesis — which is essentially the defense sector's version of the foundation model approach.

Worth noting: JPMorgan's Security and Resiliency Initiative co-led the Series G. The same initiative is reportedly considering participation in Reflection AI's $2.5B round. Traditional financial institutions are increasingly treating AI infrastructure as a balance-sheet decision, not just a venture bet. That capital behavior shift has implications for how private markets price this category.

Quick Takes

Reflection AI eyes $2.5B raise at $25B valuation — The Nvidia-backed, open-model AI startup founded by former Google DeepMind researchers is reportedly in talks for a new round that would more than triple its $8B valuation from October. JPMorgan's Security and Resiliency Initiative is considering co-investing. Notably, the company has not yet released a public frontier model.

Anthropic wins preliminary injunction in DOD blacklisting suit — A federal judge ruled in Anthropic's favor, finding the company likely to prevail on claims that the government's decision to brand it a potential national security adversary was unlawful. The ruling cited a lack of statutory support and noted zero amicus briefs supporting the government.

Harvey raises $200M at $11B valuation — The legal AI company, with clients including NBCUniversal and HSBC, raised at a valuation up from $8B in December. Legal AI is one of the cleaner enterprise monetization stories in the current cycle: clear ROI, professional services workflows, and high switching costs.

🎓 Manual

Lock-Up Period

A contractual restriction that prevents insiders — founders, early employees, and pre-IPO investors — from selling shares for a set period after a company goes public, typically 90 to 180 days. Lock-up expirations often create short-term selling pressure as restricted holders gain liquidity. They're a key factor to watch in any IPO analysis, especially for companies like SpaceX where secondary holders have been accumulating positions for years.

🎓 Data Point of the Day

$49.1 billion

Venture capital investment into defense technology in 2025, per PitchBook — nearly double the $27.2 billion recorded the prior year. Shield AI's raise this week is a data point in a structural trend, not an outlier.

👀 What We’re Watching

1. The SpaceX S-1 — The prospectus filing will be the most important private-to-public disclosure in years. Starlink's margin structure, the xAI integration's financial treatment, and the retail allocation mechanics will all be scrutinized immediately upon release.
2. The Anthropic-OpenAI IPO race — Both companies need capital, but the first to file sets the public market valuation framework for the entire AI sector. Watch for pre-IPO tender offer activity as a leading indicator of timeline.
3. JPMorgan's Security and Resiliency Initiative — The bank is co-investing in both Shield AI and reportedly Reflection AI through this vehicle. When a major financial institution creates a dedicated program for AI and defense startups, it's a signal that this category has moved from speculative to structural in institutional portfolios.

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