Anthropic’s 22 underwriters stand to collect about $636 million in underwriting discounts on its 825 million-share IPO at the $74 midpoint, by our arithmetic from the company’s S-1/A filed on 10 November. The filing leaves the discount blank, but its own net-proceeds figures imply a rate of about 1.04%, or roughly 77 cents a share.
CNBC reported on 13 November that Goldman Sachs and Morgan Stanley, which co-lead the deal, are also competing to manage the wealth the listing creates. Evercore ISI analyst Glenn Schorr estimated the IPO could generate roughly $395 million in total underwriting fees, CNBC reported.
Business Pill · IPO Float
A short explainer on IPO float, the share of a company sold in its listing. It teaches the general idea and does not discuss Anthropic’s offering.
The key insight: As we read the filing, the banks are tied to this IPO three ways at once: an underwriting discount of about 1.04%, or $636 million at the midpoint by our arithmetic; roles on Anthropic’s credit agreement for 16 of the 22; and share stakes, each under 0.5% fully diluted, held by affiliates of five of them.
The S-1/A names Goldman Sachs & Co. LLC and Morgan Stanley & Co. LLC as the representatives of the underwriters. The cover lists 20 more banks in four rows: J.P. Morgan, Citigroup, Barclays and Wells Fargo Securities; then BofA Securities, Deutsche Bank Securities, RBC Capital Markets and UBS; then BMO, BNP Paribas, Credit Agricole CIB, Jefferies, Mizuho, MUFG and TD Securities; then BTIG, Cantor, Capital One Securities, Macquarie Capital and Societe Generale.
The offering is 825,000,000 Class A shares at an estimated $70 to $78: Anthropic sells 801,351,354 and selling stockholders sell 23,648,646. The underwriters have a 30-day option on 123,750,000 more shares from Anthropic. CNBC put the deal at $64.35 billion as of the latest filing, which is 825 million shares at $78.
The share-allocation column in the underwriting table is blank in this amendment, so the filing does not yet say how many shares, or how much of the fee, each bank takes.
Underwriting discount on Anthropic’s IPO implied by its S-1/A No. 2 (about 1.04%, from the filing’s $793 million change in net proceeds per $1.00 on 801,351,354 shares), at the $70 to $78 range on the 825 million-share base deal and with the 123.75 million-share option; our arithmetic. The Evercore ISI estimate of roughly $395 million is as reported by CNBC on 13 November 2026.The 22 underwriters named on the cover of Anthropic’s S-1/A No. 2, 10 November 2026, by row. The filing leaves each bank’s share allocation blank.
What the Filing Implies About the Fee
The cover and the underwriting table leave the per-share and total underwriting discount blank, and the FINRA compensation cap reads “will not exceed % of the gross offering proceeds” with no number. Two other disclosures pin it down. Each $1.00 change in the price would change net proceeds by “approximately $793 million”, the filing says, on Anthropic’s 801,351,354 shares. That is 98.96 cents kept per dollar, which leaves about 1.04% for the underwriters, by our arithmetic.
The second check is the headline proceeds figure. Anthropic estimates net proceeds from the IPO and the concurrent private placement at approximately $84.6 billion at $74, after discounts and about $68 million of expenses, and says the underwriters get no discount on the $26.0 billion of Class N stock in the placement. Backing those out gives a rate of about 1.07%, by our arithmetic; with the filing’s rounding, both checks fit a band of roughly 0.98% to 1.10%.
At 1.04%, the fee on all 825 million shares would be about $602 million at $70, $636 million at $74 and $671 million at $78, by our arithmetic. If the option is exercised in full, the totals rise to about $692 million and $771 million at the ends of the range. At the midpoint, about $618 million of the $636 million would come from Anthropic’s own shares; we applied the same rate to the selling stockholders’ shares, whose row the filing also leaves blank.
The Banks’ Other Ties to Anthropic
The underwriting section says certain affiliates of Goldman Sachs, Morgan Stanley, J.P. Morgan, Cantor Fitzgerald and TD Securities, including funds they manage, “beneficially hold shares of our redeemable convertible preferred stock and/or our Class A common stock”. The holdings of each such underwriter “represent less than 0.5% of our fully diluted shares as of September 30, 2026”, the filing adds.
Several of the same banks also have roles on Anthropic’s A&R Credit Agreement. An affiliate of Morgan Stanley is administrative agent, collateral agent and lead left arranger under that agreement, and affiliates of Goldman Sachs, Barclays, Citigroup, J.P. Morgan and Wells Fargo are joint lead arrangers, joint bookrunners and syndication agents, according to the S-1/A. Bernstein Institutional Services is acting as selling agent on behalf of SG Americas Securities, the Societe Generale underwriter.
Certain board members and related entities have indicated interest in buying up to $303 million of Class A stock at the IPO price, and the underwriters “will receive the same underwriting discounts and commissions” on those shares, the filing says.
The Second Payday CNBC Describes
CNBC reported that Schorr used the June SpaceX offering as a benchmark and, in his base case, said Goldman and Morgan Stanley could each collect approximately $79 million, assuming a 20% share of the fee pool. Applied to the $636 million the filing implies, a 20% share would be about $127 million each, by our arithmetic; the filing does not give the split.
A Goldman spokesperson told CNBC: “We see a significant opportunity as founders and executives navigate major liquidity events”. CNBC reported that Morgan Stanley attracted a record $232 billion in net new assets in the third quarter, with IPO-related flows just over half, and that Goldman reported $47 billion in long-term wealth management inflows, figures CNBC says are not directly comparable.
Morningstar analyst Sean Dunlop told CNBC: “I don’t know that Goldman is necessarily going to see a huge benefit in the wealth business from the Anthropic IPO specifically”. CNBC also reported that, as of September, banks were still vying to manage Anthropic’s employee stock plans.
As we read it, the $26.0 billion Class N placement is the quiet subtraction: it is about 30% of the $87.05 billion Anthropic and the selling stockholders would raise at $74, by our arithmetic, and the filing says the underwriters earn no discount on it.
As we read CNBC’s reporting, the banks themselves frame the deal as a door to wealth clients: Goldman’s spokesperson describes wealth planning as a natural extension of advising on an IPO, and Morgan Stanley points to its employee stock-plan relationships.
Goldman Sachs spokesperson, to CNBC, 13 November 2026
“When executives partner with us on an IPO, financing, or M & A transaction, wealth planning is a natural extension of that advisory relationship.”
Three Implications
FOR THE FINAL PROSPECTUS The blank discount and the blank per-bank share column are the numbers to check when the priced prospectus is filed; our 1.04% is inferred from rounded figures.
FOR THE ANALYST ESTIMATE Evercore ISI’s roughly $395 million, as CNBC reported it, is about 0.61% of the $64.35 billion top-of-range deal, by our arithmetic, below the rate the filing’s own figures imply.
FOR CONFLICTS Affiliates of Goldman Sachs, Morgan Stanley, J.P. Morgan, Cantor Fitzgerald and TD Securities hold Anthropic shares, each under 0.5% of the fully diluted count as of 30 September, the filing says.
The framework records: “the capex race is no longer a corporate spending cycle. It is a sovereign-scale financing problem dressed in tech-company clothing”.
As we read it, a 22-bank syndicate earning about $636 million at the midpoint, by our arithmetic, is the toll on routing public equity into that financing. The framework predates the IPO and does not discuss it.
What Is Not Established
The underwriting discount is not stated in the S-1/A; our 1.04% is inferred from rounded figures and could move when the final prospectus fills in the table. The filing does not give each bank’s share of the shares or the fee, and it does not say whether the selling stockholders pay the same rate.
We did not see Schorr’s note and do not know his fee-rate assumption; the $395 million and $79 million figures are as CNBC reported them. We did not contact Anthropic, Goldman Sachs or Morgan Stanley for this piece.
This Week In The AI Supercycle
The Great Convergence of Capital, Power, and Geopolitics
This week’s issue: for two years the AI build-out was priced as a supply story, and last week as a credit story. This week it was priced as a permission story, and the answer arrived as a cost, not a ban.
Anthropic’s filing does not print the fee, but its own net-proceeds math implies about 1.04%, or about $636 million across 22 banks at the $74 midpoint and up to about $771 million with the option at $78, by our arithmetic. That is above the roughly $395 million Evercore ISI estimate CNBC cited, and the final prospectus will show the actual rate.
A note on sourcing. We read Anthropic’s S-1/A No. 2, filed with the SEC on 10 November 2026, on EDGAR: the cover, use of proceeds, underwriting and other-relationships sections and the expense table. The filing leaves the underwriting discount blank, so the 1.04% rate and every fee total here are our arithmetic from its net-proceeds figures, labelled as such. We read CNBC’s 13 November article in full; the Evercore ISI estimates and the bank and analyst quotes are as CNBC reported them. We did not see the Evercore note. We did not contact Anthropic, Goldman Sachs or Morgan Stanley for this piece.
Gennaro Cuofano is a CRO and tech executive who has worked in AI since late 2015, starting with bringing NLP, natural-language generation, voice and chatbot products to the marketing industry. His background is in law and finance: he holds a Master's degree in Law and an International MBA with an emphasis on corporate finance (LUISS Business School and the University of San Diego, 2012), and worked as a financial analyst at a real-estate investment firm in San Diego and as an assistant controller. His work focuses on business model strategy, business engineering and, more broadly, structural analysis: how companies make money, read from their own filings. He created FourWeekMBA and leads research there and at The Business Engineer, his newsletter on AI and business strategy, with over 95,000 subscribers and more than 1,000 published analyses. His writing has also appeared on Entrepreneur (for example, How to Digitize a Family Business in Europe) and HackerNoon. Find him on LinkedIn and Substack. See how we source.
