VCs Will Make Billions on Anthropic’s IPO—But Amazon Is Set to Make Much, Much More

VCs Will Make Billions on Anthropic’s IPO—But Amazon Is Set to Make Much, Much More

**By [Ymoonlight editory team | October 28, 2026 | 12-Minute Read**

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## The Short Version (For the Busy American)

When Anthropic files its S-1 and rings the opening bell on Nasdaq next month, the venture capitalists who bet on Claude will celebrate the biggest payday of their careers. **Spark Capital’s $75 million check is now worth $7 billion**—a 93x return. **Iconiq’s $6 billion late-stage bet** is already worth $17 billion, and could double if Anthropic hits a $2 trillion valuation .

But the real winner isn’t a Sand Hill Road VC. It’s a Seattle e-commerce company that most people still think of as the “everything store.”

**Amazon’s stake in Anthropic could be worth over $200 billion** by the time the IPO prices, according to multiple analyses of its regulatory filings . That’s from a total investment of roughly **$18 billion**—a return of more than **10x** on a company that hasn’t even started trading publicly yet .

**The punchline:** The venture capitalists took the risk. Amazon took the strategic position. And when the dust settles, the company that sells toilet paper and cloud servers will have made more money on Anthropic than almost anyone.

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## The VC Scorecard: Who Made What

Let me walk you through the winners, because the range of returns tells the story of Anthropic’s meteoric rise.

### The Early Believers

**Spark Capital** invested **$75 million** in Anthropic’s 2023 Series C round, when the company was valued at just $5 billion. That stake is now worth **$7 billion** at the last private valuation of $965 billion—a **93x return**. Spark is the only venture firm with a board seat .

**Eric Schmidt**, the former Google CEO, invested in Anthropic’s Series A in 2021, when the startup was valued at **$461 million**. He owns roughly **1% of the company**, worth nearly **$10 billion** at the current private valuation .

**Sound Ventures**, the firm started by Guy Oseary and Ashton Kutcher, invested **$35 million** in that same 2023 round. It has since put in another **$400 million**, and its stake is now worth “billions” .

### The Late Arrivals

Here’s where it gets interesting—and a little painful for the firms that waited.

**Sequoia Capital**, the legendary VC that backed OpenAI early, didn’t write its first check to Anthropic until early 2026, when the company was already valued at **$380 billion**. It invested **$3 billion** for roughly **1%**—a stake that has already more than doubled, but a fraction of what Spark’s early bet returned .

**Iconiq** invested **$6 billion** in 2025 when Anthropic was valued at **$183 billion**. Its stake is now worth **$17 billion**—a solid 2.8x return, but nothing like the early investors’ multiples .

**Menlo Ventures** poured in over **$1 billion**, including leading the Series D. Its stake is worth **$14 billion** at the last private valuation .

The lesson: **in AI, early is everything**. The firms that took the risk in 2021 and 2023 are the ones who will make generational returns. The ones who waited for the hype to build paid a premium for a smaller slice.

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## Amazon’s Masterstroke: The Convertible Note Gambit

Now let’s talk about the real winner. Amazon didn’t just invest in Anthropic. It **structured** its investment in a way that maximized its upside while minimizing its downside.

### The Structure

Amazon first backed Anthropic in 2023 with a commitment to invest up to **$4 billion**. Instead of taking equity upfront, it structured much of its investment as **convertible notes**—debt that converts into shares upon an IPO or sale .

That structure was brilliant. As Anthropic’s valuation soared across successive funding rounds, the shares those notes would convert into became **far more valuable**. Amazon’s own filings valued its note holdings at **$97.9 billion** as of June 30 .

### The Full Stake

By the second quarter of 2026, Amazon had invested roughly **$18 billion** total:

- **$8 billion** in convertible notes from 2023 through 2025

- **$10 billion** in nonvoting preferred stock in the second quarter ($5 billion in each of Anthropic’s last two funding rounds) 

Amazon’s total carrying value for its Anthropic stake was **$190.4 billion** as of its July disclosure . At a $1.5 trillion IPO valuation, that stake could be worth even more.

### The Ownership Cap

Amazon’s notes could convert into as many as **1.84 billion shares**, according to the S-1. But a **12% ownership cap** limits how much Amazon can hold. Any notes that can’t convert because of the cap will stay outstanding and convert in later quarters .

### The Customer Relationship

Here’s the part that makes Amazon’s position even stronger. Anthropic has committed to spend at least **$110 billion on AWS over the next 10 years** . That’s guaranteed revenue flowing into Amazon’s cloud business, regardless of what happens to Anthropic’s stock price.

Amazon isn’t just an investor. It’s a **landlord**. Anthropic is paying rent.

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## The Human Touch: What This Means for Real Americans

Let me put this in terms that actually connect to your life.

### If You Own Amazon Stock

You own a piece of the biggest AI windfall on Wall Street. Amazon’s stake in Anthropic is a **hidden asset** that many investors haven’t fully priced in. When the IPO happens and the value becomes public, it could trigger a re-rating of Amazon’s stock.

Amazon’s second-quarter net income surged **245% year-over-year** to $62.6 billion, largely due to **paper gains** on its Anthropic stake . Those gains aren’t cash yet—but they will be after the IPO.

### The AI Wealth Concentration

Here’s the uncomfortable part. The biggest winners from Anthropic’s IPO aren’t the engineers building Claude. They’re the **investors** who bet on it. Spark Capital’s $7 billion return came from a $75 million check. Amazon’s $200 billion stake came from $18 billion.

The wealth created by AI is flowing to the people who **financed** it, not the people who **built** it. That’s how capitalism works. But it’s worth understanding as the AI boom creates trillion-dollar valuations while the companies themselves are still losing money.

### The Risk for Amazon

Amazon’s stake is worth $190 billion **on paper**. If Anthropic’s IPO prices lower than expected—say, at $1 trillion instead of $1.5 trillion—Amazon’s stake shrinks. If the AI trade continues to sell off and Anthropic’s stock falls after listing, Amazon’s paper gains evaporate.

Amazon is the biggest winner **if** the IPO succeeds. If it doesn’t, Amazon is the biggest loser.

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## Frequently Asked Questions

### How much has Amazon invested in Anthropic?

Roughly **$18 billion** total. That includes **$8 billion** in convertible notes from 2023 through 2025, and **$10 billion** in nonvoting preferred stock in the second quarter of 2026 ($5 billion in each of Anthropic’s last two funding rounds) .

### How much is Amazon’s stake worth?

Amazon’s carrying value for its Anthropic stake was **$190.4 billion** as of its July disclosure . At a $1.5 trillion IPO valuation, it could be worth more. Some analyses suggest it could exceed **$200 billion** .

### Why did Amazon use convertible notes?

Because it was a **smarter structure**. Convertible notes are debt that converts into equity at a later date. By taking notes instead of equity upfront, Amazon could capture the upside of Anthropic’s soaring valuation without taking a fixed ownership percentage early on. As Anthropic’s value grew, so did the value of the shares the notes would convert into .

### What is the 12% ownership cap?

Amazon’s convertible notes could convert into as many as **1.84 billion shares**. But a cap limits Amazon to **12% of Anthropic’s “partially diluted” share count**. Amazon can waive the cap, but any notes that can’t convert because of the limit will stay outstanding and convert in later quarters .

### Who are the other big winners?

**Spark Capital**: $75 million invested, now worth **$7 billion** (93x return). **Eric Schmidt**: ~1% stake, worth nearly **$10 billion**. **Iconiq**: $6 billion invested, now worth **$17 billion**. **Sequoia**: $3 billion invested, ~1% stake, already doubled. **Menlo Ventures**: over $1 billion invested, now worth **$14 billion** .

### How does this compare to the VCs’ returns?

Amazon’s return is **larger in absolute dollars**—potentially $200 billion—but the VCs’ returns are **larger in multiples**. Spark’s 93x return on $75 million is a better percentage return than Amazon’s ~10x on $18 billion. The difference is scale: Amazon put in more money and got a bigger absolute payday.

### What does Amazon get beyond the equity?

Anthropic has committed to spend at least **$110 billion on AWS over the next 10 years** . Amazon also provides up to **5 gigawatts of capacity** for Anthropic’s AI training and runs Anthropic’s models on its **Trainium chips** . Amazon is both an investor and a **supplier**—a double win.

### Should I buy Amazon stock because of this?

I can’t give personalized investment advice. What I can tell you is that **the Anthropic stake is a hidden asset** that could be worth $200 billion or more. But it’s already partially reflected in Amazon’s stock price, and the value depends on Anthropic’s IPO succeeding. The risk/reward depends on your view of the AI trade and Amazon’s core businesses.

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## The Path Forward: What to Watch

### The IPO Pricing

The final valuation will determine how much Amazon’s stake is worth. At $1.5 trillion, Amazon’s ~12% stake (if fully converted) would be worth roughly **$180 billion**. At $2 trillion, it would be worth **$240 billion** . Watch for the pricing announcement in mid-November.

### The Conversion

Amazon’s notes will convert into shares upon IPO. The 12% cap will apply, and any excess notes will remain outstanding. Watch for the final share count and ownership percentage in post-IPO filings.

### The Lockup Expiration

Amazon won’t be able to sell its shares immediately. IPO lockups typically last 90-180 days. When the lockup expires, Amazon could sell—or hold. Its decision will signal its confidence in Anthropic’s future.

### The AI Trade

Anthropic’s IPO is the biggest test yet of public market appetite for AI. If it succeeds, Amazon’s stake becomes a massive win. If it fails, Amazon’s paper gains evaporate—and the entire AI trade faces a reckoning.

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## Conclusion: The House Always Wins

Here’s what I want you to take away from Anthropic’s IPO windfall.

The venture capitalists took the risk. They wrote the early checks, backed the founders, and bet on a company that was losing money. They deserve their returns. Spark Capital’s 93x is the payoff for conviction.

But Amazon played a different game. It didn’t just invest. It **structured** its investment. It used convertible notes. It locked in a customer relationship worth **$110 billion**. It built data centers to run Anthropic’s models. And when the IPO happens, it will walk away with a stake worth **$200 billion or more**.

The VCs will make billions. Amazon will make **much, much more**. And the company that sells everything from diapers to cloud computing will have pulled off the greatest trade of the AI boom—without ever writing a line of code.

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## Disclaimer

This article is for informational purposes only and does not constitute financial advice, investment advice, or a recommendation to buy or sell any securities. The author is not a licensed financial advisor. All investments involve risk, including the potential loss of principal. Past performance does not guarantee future results. Readers should conduct their own research and consult with a qualified financial professional before making any investment decisions. Data and figures cited are accurate as of the date of publication but may change. The author holds no position in any securities mentioned.

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