Records in the IPO market rarely last long during a boom cycle — and 2026 is proving that in dramatic fashion. SpaceX’s June debut set an all-time high for IPO size, raising roughly $75 billion at a valuation near $1.8 trillion. Just months later, Anthropic is reportedly positioning for a listing that could push past that mark entirely, with investors discussing a valuation of $2 trillion or more. Here’s how the two offerings actually compare, and what it would take for Anthropic to claim the record.

Key Takeaways

• SpaceX’s June 12, 2026 IPO priced at $135 per share, raising approximately $75 billion and closing its first day near a $2.1 trillion market cap.
• Anthropic’s reported target valuation of ~$2 trillion would rival or exceed SpaceX’s opening print, and comfortably exceed SpaceX’s settled valuation of roughly $1.5–1.84 trillion.
• U.S. IPOs had raised $160.6 billion through August 19, 2026 — closing in on the 2021 full-year record of $195.2 billion, with months still to go.
• Both companies share a structural quirk that amplifies price moves: an unusually low free float at listing.
• Anthropic’s IPO is reportedly targeted for September or October 2026, which would put the two largest offerings in history within roughly four months of each other.

Setting the Bar: What SpaceX Actually Did

SpaceX’s IPO on June 12, 2026 was, by nearly every measure, historic. The company priced shares at $135, raising approximately $75 billion in the offering — the largest capital raise ever completed in a single IPO. Its market capitalization closed the first trading day near $2.1 trillion before settling into a range closer to $1.5 trillion by late July, and has since stabilized around $140 per share, implying a market cap of roughly $1.84 trillion.

That settling pattern — a dramatic first-day pop followed by a pullback — is common in low-float IPOs, where a small percentage of total shares outstanding are actually available to trade. Early price discovery in these situations tends to overshoot before institutional and retail flows normalize the price closer to fundamental value.

The Anthropic Comparison, Side by Side

The most important distinction: SpaceX’s valuation is anchored in aerospace infrastructure, satellite internet (Starlink), and government/commercial launch contracts — a capital-intensive but tangible-asset-heavy business. Anthropic’s valuation, by contrast, rests almost entirely on software revenue growth and AI model licensing — an asset-light but computationally expensive business model with a much steeper, more recent growth curve.

Why Anthropic Could Actually Take the Record

1. A steeper growth trajectory. Anthropic’s revenue run rate grew roughly sevenfold in about seven months (from $9B to $65B). Few companies of any kind — let alone one preparing a public listing — have shown that rate of acceleration this close to an IPO.
2. Two-year forward pricing. Bankers are reportedly using a 2028 revenue projection of $190–200 billion to justify the $2 trillion figure, implying a roughly 10x forward multiple — a framework that gives more room to argue for a higher headline valuation than a purely trailing-revenue approach would.
3. A hot IPO market overall. With $160.6 billion already raised across U.S. IPOs through mid-August 2026, nearing the full-year 2021 record of $195.2 billion, market conditions are unusually supportive of large, ambitious offerings.
4. Underwriter reuse and confidence. The same lead banks that priced SpaceX’s record deal are reportedly leading Anthropic’s — suggesting they believe the market can support back-to-back trillion-dollar-plus tech listings within the same year.

Why It Might Not Happen

• The $2 trillion figure is unconfirmed. It comes from investors and bankers circling the deal, not from Anthropic’s own guidance. SpaceX’s final valuation, by contrast, was a completed, priced transaction.
• A run rate isn’t revenue. Anthropic’s $65 billion figure is an extrapolation from a short, recent period. If growth decelerates even modestly before pricing, the valuation math could compress.
• Post-listing performance matters more than headline valuation. SpaceX’s first-day peak of ~$2.1 trillion wasn’t sustained — it settled meaningfully lower within weeks. Anthropic could technically “beat” SpaceX’s opening valuation and still underperform it on a settled, weeks-later basis.
• Market conditions can shift quickly. A cooling in the broader 2026 IPO boom between now and Anthropic’s expected September–October window could compress achievable pricing.

What “Largest IPO Ever” Actually Measures

It’s worth being precise about what record is actually being discussed, because there are at least three distinct measures:

• Capital raised — the actual dollar amount sold to investors (SpaceX: ~$75 billion)
• Valuation at pricing — the implied market cap based on the offer price (SpaceX: ~$1.8 trillion)
• First-day peak market cap — the highest valuation reached during initial trading (SpaceX: ~$2.1 trillion)

Anthropic could plausibly set a record on one of these measures without setting a record on all three — for instance, achieving a higher headline valuation target while raising less absolute capital than SpaceX did, depending on how many shares the company decides to sell in the offering.

FAQ

Is Anthropic definitely going to have the largest IPO in history? Not confirmed. Investors and bankers are reportedly targeting a valuation around $2 trillion, which would exceed SpaceX’s settled valuation and rival its first-day peak, but no final valuation, share price, or capital raise amount has been set.

How much did SpaceX raise in its IPO? SpaceX raised approximately $75 billion in its June 12, 2026 IPO, pricing shares at $135 and reaching a first-day market cap near $2.1 trillion.

Why do both SpaceX and Anthropic have such volatile early trading potential? Both companies reportedly have a low free float — a small percentage of total shares available for public trading at listing — which tends to amplify price swings in both directions during early trading.

Could Anthropic’s IPO underperform SpaceX’s despite a higher target valuation? Yes. A higher headline target valuation doesn’t guarantee stronger post-listing performance. SpaceX itself saw its valuation compress from a $2.1 trillion first-day peak to roughly $1.5 trillion within weeks before stabilizing.

When a company chooses its underwriters, it’s telling the market something before a single share trades. Anthropic’s reported selection of Morgan Stanley and Goldman Sachs — alongside JPMorgan — as lead banks on its expected IPO is being read by Wall Street as a signal of confidence in the company’s ability to command a valuation near $2 trillion. Here’s what these roles actually mean, mechanically and strategically, for anyone considering an investment.

Key Takeaways

• Morgan Stanley reportedly holds the “pole position” for the coveted lead-left spot on Anthropic’s IPO, according to sources cited by the Financial Times.
• Goldman Sachs is running “neck-and-neck” with Morgan Stanley for a top-tier underwriting role.
• JPMorgan, Citigroup, and Barclays are expected to round out the broader syndicate.
• These same three lead banks — Morgan Stanley, Goldman Sachs, and JPMorgan — anchored the SpaceX IPO in June 2026, the current record-holder for largest offering.
• The banks previously provided Anthropic with debt financing, including work toward a reported $15 billion pre-IPO credit facility.
• Underwriter selection influences pricing strategy, institutional allocation, and after-market stabilization — all of which affect retail investors indirectly.

What “Lead-Left” Actually Means

In IPO terminology, the lead-left bank is the underwriter listed first (traditionally on the left side) on the cover of the prospectus — a position that comes with outsized responsibility and outsized reward. The lead-left bank typically:

• Runs the bookbuilding process, collecting and aggregating institutional investor orders
• Sets the final offer price in coordination with the issuer’s board
• Takes the largest underwriting fee allocation among the syndicate
• Leads after-market stabilization activities, including exercising the “greenshoe” over-allotment option if the stock trades up
• Serves as the primary point of contact between the company and public market investors during the roadshow

If Morgan Stanley secures this role for Anthropic, as reporting suggests is likely, it puts the bank in the driver’s seat for what could be the largest IPO ever completed — surpassing even its own recent work, alongside Goldman Sachs and JPMorgan, on the SpaceX offering.

Why Two (or Three) Top-Tier Banks Matters for Investors

A syndicate anchored by Morgan Stanley and Goldman Sachs — both perennially ranked among the top global equity underwriters — sends a specific signal: institutional demand is expected to be deep enough to require serious distribution muscle. For investors, this translates into a few practical implications:

1. Broader institutional reach. These banks’ wealth management and institutional sales networks span pension funds, sovereign wealth funds, and large asset managers globally, which typically supports stronger initial demand and a more orderly aftermarket.
2. More rigorous pricing discipline. Top-tier lead underwriters have reputational incentive to avoid a “busted IPO” — a listing that trades below its offer price shortly after debut — because it damages their standing for future mandates.
3. Deeper aftermarket support. Lead banks typically commit capital to stabilize the stock in early trading through the over-allotment mechanism, which can reduce (though not eliminate) early volatility.

The Debt-Equity Connection: Why the $15 Billion Credit Facility Matters Here

It’s not a coincidence that the banks reportedly structuring Anthropic’s equity offering previously provided the company with debt financing. Morgan Stanley, Goldman Sachs, and JPMorgan are also reportedly involved in finalizing a $15 billion pre-IPO credit facility for Anthropic — capital that gives the company balance sheet flexibility to fund continued compute infrastructure buildout independent of the equity raise itself.

This dual relationship — debt financier and equity underwriter — is common for large-cap tech IPOs and gives the lead banks unusually deep visibility into Anthropic’s financials heading into the roadshow. For investors, that can be read two ways:

• Bullish read: The banks have extensive due diligence exposure and are still willing to lead a ~$2 trillion offering.
• Cautious read: The banks have a strong financial incentive (underwriting fees plus debt relationship preservation) to see the deal price successfully, which doesn’t guarantee the valuation is fundamentally sound.

Historical Precedent: The SpaceX Playbook

Morgan Stanley, Goldman Sachs, and JPMorgan ran the book on SpaceX’s IPO in June 2026, which priced at $135 per share and raised approximately $75 billion at a valuation near $1.8 trillion — the current record for largest IPO in history. That stock has since traded in a range from a first-day peak near $2.1 trillion market cap down to roughly $1.5 trillion by late July, before stabilizing.

The reuse of essentially the same underwriting trio for Anthropic suggests the banks are applying lessons learned from the SpaceX process — particularly around managing a low free-float listing, which both companies share as a structural feature.

Risks the Underwriter Roster Doesn’t Solve

Even the strongest underwriting syndicate can’t eliminate fundamental risk. Investors should keep in mind:

• A low float amplifies volatility regardless of which bank is managing the book — SpaceX’s post-IPO price swing from $2.1T to $1.5T illustrates this even with top-tier underwriters involved.
• Underwriter confidence is not a valuation guarantee. Banks earn substantial fees regardless of long-term stock performance; their willingness to lead the deal reflects market appetite and relationship value, not a certification of fair value.
• Multiple additional banks joining the syndicate (Citigroup, Barclays) spreads risk but also dilutes any single bank’s accountability for pricing outcomes.

FAQ

What does it mean that Morgan Stanley is the “lead-left” bank on Anthropic’s IPO? It means Morgan Stanley would run the bookbuilding process, help set the final offer price, and lead after-market stabilization — the most influential and highest-fee role in the underwriting syndicate.

Does Goldman Sachs having a top role change the IPO outlook?

Having two top-tier global banks (Morgan Stanley and Goldman Sachs) sharing lead roles typically signals strong expected institutional demand and broader distribution capacity, though it doesn’t guarantee post-IPO stock performance.

Are Morgan Stanley and Goldman Sachs also lending Anthropic money?

Yes — reporting indicates these banks previously provided debt financing to Anthropic and are involved in structuring a reported $15 billion pre-IPO credit facility alongside their equity underwriting roles.

Did the same banks handle the SpaceX IPO?

Yes. Morgan Stanley, Goldman Sachs, and JPMorgan anchored the SpaceX IPO in June 2026, which currently holds the record for the largest offering in history.

Anthropic is preparing for a possible October 2026 IPO with Morgan Stanley, Goldman Sachs and JPMorgan as lead underwriters, targeting a valuation close to or above $1 trillion — up from a $965 billion private valuation set in a May 2026 funding round. The listing would put Anthropic ahead of rival OpenAI, which has pushed its own IPO target from late 2026 into 2027.

Beyond the valuation headline

Most coverage of the Anthropic IPO has focused on a single number — the trillion-dollar valuation threshold. The more useful story for investors and market-watchers is the sequencing: why Anthropic is moving first, what its revenue trajectory actually looks like against that valuation, and what risks sit underneath the number that don’t show up in the headline.

Where things stand

Bankers working on Anthropic’s offering began scheduling meetings with prospective institutional investors in mid-July, according to reporting that cited people familiar with the process — a concrete signal that the company’s move toward a public listing, possible as early as October 2026, is advancing beyond speculation (CNBC via StartupHub; CNBC).

The valuation anchor is a $65 billion Series H funding round closed in May 2026, which pushed Anthropic’s post-money valuation to roughly $965 billion — surpassing OpenAI’s $852 billion valuation for the first time (CNBC; IG UK). Investment bankers and analysts widely expect the company to debut above the $1 trillion mark, assuming market conditions cooperate (IG UK).

Secondary-market pricing offers an early read on investor appetite: platforms tracking pre-IPO share transfers have shown an implied valuation range between roughly $1.05 trillion and $1.15 trillion, with one forecasting firm projecting a median first-day market capitalisation around $1.10 trillion — a 14% premium over the last private funding round (BitMEX).

The race against OpenAI

Timing is a deliberate part of the strategy. OpenAI also filed confidentially for an IPO but has since pushed its target from fall 2026 into 2027, giving Anthropic a window to list first (TheStreet). Being first matters for two structural reasons market analysts point to: the first mover sets the valuation benchmark the rest of the sector gets measured against, and it locks in institutional capital before broader AI-market sentiment has a chance to shift (TheStreet).

Prediction markets appear to be pricing that race directly: platform Kalshi has shown roughly a 72% probability of Anthropic listing before OpenAI, according to reporting (TheStreet).

The revenue math underneath the number

The valuation is aggressive relative to revenue by conventional software standards, though analysts describe it as within the range frontier AI companies have been commanding. Reported figures put Anthropic’s annualized revenue run-rate at roughly $47 billion as of May 2026, against the $965 billion private valuation — an implied multiple of around 20 times revenue (Luminix).

What stands out in the growth trajectory cited by analysts is its pace: the annualized run-rate reportedly moved from roughly $9 billion at the end of 2025 to $14 billion in February, $30 billion in April, and $47 billion by May — a rate of increase some analysts have described as effectively doubling every six weeks at points during that stretch (Luminix).

The consumer-versus-enterprise question

One structural risk analysts flag: Anthropic’s business is heavily weighted toward enterprise and API customers rather than consumer brand recognition. Estimates cited in investor analysis put ChatGPT’s share of consumer AI traffic at 53-68%, against roughly 2-6% for Claude (Luminix). That makes the IPO pitch to retail investors — who tend to reward consumer familiarity — different in kind from the enterprise-stickiness argument likely to anchor the institutional roadshow.

The SpaceX precedent looming over the deal

Anthropic’s timing follows closely behind SpaceX’s Nasdaq debut on June 12, 2026, which raised approximately $75 billion at a $1.77 trillion valuation under ticker SPCX. SpaceX shares have since fallen below their $135 IPO price — a data point IPO advisers and institutional buyers are reportedly weighing carefully as they assess how much premium markets will actually pay for a loss-making frontier technology company at IPO (StartupHub).

What’s confirmed versus speculative

It’s worth separating fact from forecast here. Confirmed: the confidential S-1 filing, the underwriter roster (Morgan Stanley, Goldman Sachs, JPMorgan), the $965 billion May funding round, and the ongoing investor meetings. Not yet confirmed: the actual offering price range, the exact IPO date, and the final valuation — none of which will be public until the S-1 is unsealed, expected in the lead-up to any autumn listing.

Anthropic has also taken an unusual defensive step ahead of the listing, warning multiple secondary-market platforms — including Forge, Hiive and Sydecar — that unauthorised transfers of its private shares are void and will not be recognised on the company’s books, a signal of how closely it is trying to control pre-IPO trading and pricing signals ahead of an official debut (IG UK).

The bottom line

For the nine markets covered in this analysis, the Anthropic listing is less a Silicon Valley story than a global capital-markets event: a trillion-dollar-plus debut would be among the largest IPOs in history, competing directly with OpenAI for the same pool of institutional capital and setting the valuation benchmark every subsequent AI listing — in the US, Singapore, the UK or elsewhere — will be measured against.